Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 6230 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/cp/cp-tree.h b/gcc-4.9/gcc/cp/cp-tree.h
new file mode 100644
index 000000000..e9fe86ee4
--- /dev/null
+++ b/gcc-4.9/gcc/cp/cp-tree.h
@@ -0,0 +1,6230 @@
+/* Definitions for C++ parsing and type checking.
+   Copyright (C) 1987-2014 Free Software Foundation, Inc.
+   Contributed by Michael Tiemann (tiemann@cygnus.com)
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_CP_TREE_H
+#define GCC_CP_TREE_H
+
+#include "ggc.h"
+#include "function.h"
+#include "hashtab.h"
+#include "vec.h"
+
+/* In order for the format checking to accept the C++ front end
+   diagnostic framework extensions, you must include this file before
+   diagnostic-core.h, not after.  We override the definition of GCC_DIAG_STYLE
+   in c-common.h.  */
+#undef GCC_DIAG_STYLE
+#define GCC_DIAG_STYLE __gcc_cxxdiag__
+#if defined(GCC_DIAGNOSTIC_CORE_H) || defined (GCC_C_COMMON_H)
+#error \
+In order for the format checking to accept the C++ front end diagnostic \
+framework extensions, you must include this file before diagnostic-core.h and \
+c-common.h, not after.
+#endif
+#include "c-family/c-common.h"
+#include "diagnostic.h"
+
+#include "name-lookup.h"
+
+/* Usage of TREE_LANG_FLAG_?:
+   0: IDENTIFIER_MARKED (IDENTIFIER_NODEs)
+      NEW_EXPR_USE_GLOBAL (in NEW_EXPR).
+      DELETE_EXPR_USE_GLOBAL (in DELETE_EXPR).
+      COMPOUND_EXPR_OVERLOADED (in COMPOUND_EXPR).
+      TREE_INDIRECT_USING (in NAMESPACE_DECL).
+      CLEANUP_P (in TRY_BLOCK)
+      AGGR_INIT_VIA_CTOR_P (in AGGR_INIT_EXPR)
+      PTRMEM_OK_P (in ADDR_EXPR, OFFSET_REF, SCOPE_REF)
+      PAREN_STRING_LITERAL (in STRING_CST)
+      DECL_GNU_TLS_P (in VAR_DECL)
+      KOENIG_LOOKUP_P (in CALL_EXPR)
+      STATEMENT_LIST_NO_SCOPE (in STATEMENT_LIST).
+      EXPR_STMT_STMT_EXPR_RESULT (in EXPR_STMT)
+      STMT_EXPR_NO_SCOPE (in STMT_EXPR)
+      BIND_EXPR_TRY_BLOCK (in BIND_EXPR)
+      TYPENAME_IS_ENUM_P (in TYPENAME_TYPE)
+      OMP_FOR_GIMPLIFYING_P (in OMP_FOR, OMP_SIMD and OMP_DISTRIBUTE)
+      BASELINK_QUALIFIED_P (in BASELINK)
+      TARGET_EXPR_IMPLICIT_P (in TARGET_EXPR)
+      TEMPLATE_PARM_PARAMETER_PACK (in TEMPLATE_PARM_INDEX)
+      ATTR_IS_DEPENDENT (in the TREE_LIST for an attribute)
+      ABI_TAG_IMPLICIT (in the TREE_LIST for the argument of abi_tag)
+      CONSTRUCTOR_IS_DIRECT_INIT (in CONSTRUCTOR)
+      LAMBDA_EXPR_CAPTURES_THIS_P (in LAMBDA_EXPR)
+      DECLTYPE_FOR_LAMBDA_CAPTURE (in DECLTYPE_TYPE)
+      VEC_INIT_EXPR_IS_CONSTEXPR (in VEC_INIT_EXPR)
+      DECL_OVERRIDE_P (in FUNCTION_DECL)
+      IMPLICIT_CONV_EXPR_DIRECT_INIT (in IMPLICIT_CONV_EXPR)
+      TRANSACTION_EXPR_IS_STMT (in TRANSACTION_EXPR)
+      CONVERT_EXPR_VBASE_PATH (in CONVERT_EXPR)
+      OVL_ARG_DEPENDENT (in OVERLOAD)
+      PACK_EXPANSION_LOCAL_P (in *_PACK_EXPANSION)
+      TINFO_RECHECK_ACCESS_P (in TEMPLATE_INFO)
+      SIZEOF_EXPR_TYPE_P (in SIZEOF_EXPR)
+   1: IDENTIFIER_VIRTUAL_P (in IDENTIFIER_NODE)
+      TI_PENDING_TEMPLATE_FLAG.
+      TEMPLATE_PARMS_FOR_INLINE.
+      DELETE_EXPR_USE_VEC (in DELETE_EXPR).
+      (TREE_CALLS_NEW) (in _EXPR or _REF) (commented-out).
+      ICS_ELLIPSIS_FLAG (in _CONV)
+      DECL_INITIALIZED_P (in VAR_DECL)
+      TYPENAME_IS_CLASS_P (in TYPENAME_TYPE)
+      STMT_IS_FULL_EXPR_P (in _STMT)
+      TARGET_EXPR_LIST_INIT_P (in TARGET_EXPR)
+      LAMBDA_EXPR_MUTABLE_P (in LAMBDA_EXPR)
+      DECL_FINAL_P (in FUNCTION_DECL)
+      QUALIFIED_NAME_IS_TEMPLATE (in SCOPE_REF)
+      DECLTYPE_FOR_INIT_CAPTURE (in DECLTYPE_TYPE)
+   2: IDENTIFIER_OPNAME_P (in IDENTIFIER_NODE)
+      ICS_THIS_FLAG (in _CONV)
+      DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (in VAR_DECL)
+      STATEMENT_LIST_TRY_BLOCK (in STATEMENT_LIST)
+      TYPENAME_IS_RESOLVING_P (in TYPE_NAME_TYPE)
+      TARGET_EXPR_DIRECT_INIT_P (in TARGET_EXPR)
+      FNDECL_USED_AUTO (in FUNCTION_DECL)
+      DECLTYPE_FOR_LAMBDA_PROXY (in DECLTYPE_TYPE)
+      REF_PARENTHESIZED_P (in COMPONENT_REF, SCOPE_REF)
+   3: (TREE_REFERENCE_EXPR) (in NON_LVALUE_EXPR) (commented-out).
+      ICS_BAD_FLAG (in _CONV)
+      FN_TRY_BLOCK_P (in TRY_BLOCK)
+      IDENTIFIER_CTOR_OR_DTOR_P (in IDENTIFIER_NODE)
+      BIND_EXPR_BODY_BLOCK (in BIND_EXPR)
+      DECL_NON_TRIVIALLY_INITIALIZED_P (in VAR_DECL)
+   4: TREE_HAS_CONSTRUCTOR (in INDIRECT_REF, SAVE_EXPR, CONSTRUCTOR,
+	  or FIELD_DECL).
+      IDENTIFIER_TYPENAME_P (in IDENTIFIER_NODE)
+      DECL_TINFO_P (in VAR_DECL)
+      FUNCTION_REF_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
+   5: C_IS_RESERVED_WORD (in IDENTIFIER_NODE)
+      DECL_VTABLE_OR_VTT_P (in VAR_DECL)
+      FUNCTION_RVALUE_QUALIFIED (in FUNCTION_TYPE, METHOD_TYPE)
+   6: IDENTIFIER_REPO_CHOSEN (in IDENTIFIER_NODE)
+      DECL_CONSTRUCTION_VTABLE_P (in VAR_DECL)
+      TYPE_MARKED_P (in _TYPE)
+      RANGE_FOR_IVDEP (in RANGE_FOR_STMT)
+
+   Usage of TYPE_LANG_FLAG_?:
+   0: TYPE_DEPENDENT_P
+   1: TYPE_HAS_USER_CONSTRUCTOR.
+   2: unused
+   3: TYPE_FOR_JAVA.
+   4: TYPE_HAS_NONTRIVIAL_DESTRUCTOR
+   5: CLASS_TYPE_P (in RECORD_TYPE and UNION_TYPE)
+      ENUM_FIXED_UNDERLYING_TYPE_P (in ENUMERAL_TYPE)
+      AUTO_IS_DECLTYPE (in TEMPLATE_TYPE_PARM)
+      REFERENCE_VLA_OK (in REFERENCE_TYPE)
+   6: TYPE_DEPENDENT_P_VALID
+
+   Usage of DECL_LANG_FLAG_?:
+   0: DECL_ERROR_REPORTED (in VAR_DECL).
+      DECL_TEMPLATE_PARM_P (in PARM_DECL, CONST_DECL, TYPE_DECL, or TEMPLATE_DECL)
+      DECL_LOCAL_FUNCTION_P (in FUNCTION_DECL)
+      DECL_MUTABLE_P (in FIELD_DECL)
+      DECL_DEPENDENT_P (in USING_DECL)
+   1: C_TYPEDEF_EXPLICITLY_SIGNED (in TYPE_DECL).
+      DECL_TEMPLATE_INSTANTIATED (in a VAR_DECL or a FUNCTION_DECL)
+      DECL_MEMBER_TEMPLATE_P (in TEMPLATE_DECL)
+      USING_DECL_TYPENAME_P (in USING_DECL)
+      DECL_VLA_CAPTURE_P (in FIELD_DECL)
+   2: DECL_THIS_EXTERN (in VAR_DECL or FUNCTION_DECL).
+      DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
+   3: DECL_IN_AGGR_P.
+   4: DECL_C_BIT_FIELD (in a FIELD_DECL)
+      DECL_ANON_UNION_VAR_P (in a VAR_DECL)
+      DECL_SELF_REFERENCE_P (in a TYPE_DECL)
+      DECL_INVALID_OVERRIDER_P (in a FUNCTION_DECL)
+   5: DECL_INTERFACE_KNOWN.
+   6: DECL_THIS_STATIC (in VAR_DECL or FUNCTION_DECL).
+      DECL_FIELD_IS_BASE (in FIELD_DECL)
+      TYPE_DECL_ALIAS_P (in TYPE_DECL)
+   7: DECL_DEAD_FOR_LOCAL (in VAR_DECL).
+      DECL_THUNK_P (in a member FUNCTION_DECL)
+      DECL_NORMAL_CAPTURE_P (in FIELD_DECL)
+   8: DECL_DECLARED_CONSTEXPR_P (in VAR_DECL, FUNCTION_DECL)
+
+   Usage of language-independent fields in a language-dependent manner:
+
+   TYPE_ALIAS_SET
+     This field is used by TYPENAME_TYPEs, TEMPLATE_TYPE_PARMs, and so
+     forth as a substitute for the mark bits provided in `lang_type'.
+     At present, only the six low-order bits are used.
+
+   TYPE_LANG_SLOT_1
+     For an ENUMERAL_TYPE, this is ENUM_TEMPLATE_INFO.
+     For a FUNCTION_TYPE or METHOD_TYPE, this is TYPE_RAISES_EXCEPTIONS
+
+  BINFO_VIRTUALS
+     For a binfo, this is a TREE_LIST.  There is an entry for each
+     virtual function declared either in BINFO or its direct and
+     indirect primary bases.
+
+     The BV_DELTA of each node gives the amount by which to adjust the
+     `this' pointer when calling the function.  If the method is an
+     overridden version of a base class method, then it is assumed
+     that, prior to adjustment, the this pointer points to an object
+     of the base class.
+
+     The BV_VCALL_INDEX of each node, if non-NULL, gives the vtable
+     index of the vcall offset for this entry.
+
+     The BV_FN is the declaration for the virtual function itself.
+
+     If BV_LOST_PRIMARY is set, it means that this entry is for a lost
+     primary virtual base and can be left null in the vtable.
+
+   BINFO_VTABLE
+     This is an expression with POINTER_TYPE that gives the value
+     to which the vptr should be initialized.  Use get_vtbl_decl_for_binfo
+     to extract the VAR_DECL for the complete vtable.
+
+   DECL_VINDEX
+     This field is NULL for a non-virtual function.  For a virtual
+     function, it is eventually set to an INTEGER_CST indicating the
+     index in the vtable at which this function can be found.  When
+     a virtual function is declared, but before it is known what
+     function is overridden, this field is the error_mark_node.
+
+     Temporarily, it may be set to a TREE_LIST whose TREE_VALUE is
+     the virtual function this one overrides, and whose TREE_CHAIN is
+     the old DECL_VINDEX.  */
+
+/* Language-specific tree checkers.  */
+
+#define VAR_OR_FUNCTION_DECL_CHECK(NODE) \
+  TREE_CHECK2(NODE,VAR_DECL,FUNCTION_DECL)
+
+#define TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK(NODE) \
+  TREE_CHECK3(NODE,TYPE_DECL,TEMPLATE_DECL,FUNCTION_DECL)
+
+#define TYPE_FUNCTION_OR_TEMPLATE_DECL_P(NODE) \
+  (TREE_CODE (NODE) == TYPE_DECL || TREE_CODE (NODE) == TEMPLATE_DECL \
+   || TREE_CODE (NODE) == FUNCTION_DECL)
+
+#define VAR_FUNCTION_OR_PARM_DECL_CHECK(NODE) \
+  TREE_CHECK3(NODE,VAR_DECL,FUNCTION_DECL,PARM_DECL)
+
+#define VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK(NODE) \
+  TREE_CHECK4(NODE,VAR_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
+
+#define VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK(NODE) \
+  TREE_CHECK5(NODE,VAR_DECL,FIELD_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
+
+#define BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK(NODE) \
+  TREE_CHECK(NODE,BOUND_TEMPLATE_TEMPLATE_PARM)
+
+#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
+#define THUNK_FUNCTION_CHECK(NODE) __extension__			\
+({  __typeof (NODE) const __t = (NODE);					\
+    if (TREE_CODE (__t) != FUNCTION_DECL || !__t->decl_common.lang_specific \
+	|| !__t->decl_common.lang_specific->u.fn.thunk_p)		\
+      tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, 0);	\
+     __t; })
+#else
+#define THUNK_FUNCTION_CHECK(NODE) (NODE)
+#endif
+
+/* Language-dependent contents of an identifier.  */
+
+struct GTY(()) lang_identifier {
+  struct c_common_identifier c_common;
+  cxx_binding *namespace_bindings;
+  cxx_binding *bindings;
+  tree class_template_info;
+  tree label_value;
+};
+
+/* Return a typed pointer version of T if it designates a
+   C++ front-end identifier.  */
+inline lang_identifier*
+identifier_p (tree t)
+{
+  if (TREE_CODE (t) == IDENTIFIER_NODE)
+    return (lang_identifier*) t;
+  return NULL;
+}
+
+/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
+   keyword.  C_RID_CODE (node) is then the RID_* value of the keyword,
+   and C_RID_YYCODE is the token number wanted by Yacc.  */
+
+#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_5 (ID)
+
+#define LANG_IDENTIFIER_CAST(NODE) \
+	((struct lang_identifier*)IDENTIFIER_NODE_CHECK (NODE))
+
+struct GTY(()) template_parm_index_s {
+  struct tree_common common;
+  int index;
+  int level;
+  int orig_level;
+  tree decl;
+};
+typedef struct template_parm_index_s template_parm_index;
+
+struct GTY(()) ptrmem_cst {
+  struct tree_common common;
+  tree member;
+};
+typedef struct ptrmem_cst * ptrmem_cst_t;
+
+#define IDENTIFIER_GLOBAL_VALUE(NODE) \
+  namespace_binding ((NODE), global_namespace)
+#define SET_IDENTIFIER_GLOBAL_VALUE(NODE, VAL) \
+  set_namespace_binding ((NODE), global_namespace, (VAL))
+#define IDENTIFIER_NAMESPACE_VALUE(NODE) \
+  namespace_binding ((NODE), current_namespace)
+#define SET_IDENTIFIER_NAMESPACE_VALUE(NODE, VAL) \
+  set_namespace_binding ((NODE), current_namespace, (VAL))
+
+#define CLEANUP_P(NODE)		TREE_LANG_FLAG_0 (TRY_BLOCK_CHECK (NODE))
+
+#define BIND_EXPR_TRY_BLOCK(NODE) \
+  TREE_LANG_FLAG_0 (BIND_EXPR_CHECK (NODE))
+
+/* Used to mark the block around the member initializers and cleanups.  */
+#define BIND_EXPR_BODY_BLOCK(NODE) \
+  TREE_LANG_FLAG_3 (BIND_EXPR_CHECK (NODE))
+#define FUNCTION_NEEDS_BODY_BLOCK(NODE) \
+  (DECL_CONSTRUCTOR_P (NODE) || DECL_DESTRUCTOR_P (NODE) \
+   || LAMBDA_FUNCTION_P (NODE))
+
+#define STATEMENT_LIST_NO_SCOPE(NODE) \
+  TREE_LANG_FLAG_0 (STATEMENT_LIST_CHECK (NODE))
+#define STATEMENT_LIST_TRY_BLOCK(NODE) \
+  TREE_LANG_FLAG_2 (STATEMENT_LIST_CHECK (NODE))
+
+/* Nonzero if this statement should be considered a full-expression,
+   i.e., if temporaries created during this statement should have
+   their destructors run at the end of this statement.  */
+#define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
+
+/* Marks the result of a statement expression.  */
+#define EXPR_STMT_STMT_EXPR_RESULT(NODE) \
+  TREE_LANG_FLAG_0 (EXPR_STMT_CHECK (NODE))
+
+/* Nonzero if this statement-expression does not have an associated scope.  */
+#define STMT_EXPR_NO_SCOPE(NODE) \
+   TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
+
+/* Returns nonzero iff TYPE1 and TYPE2 are the same type, in the usual
+   sense of `same'.  */
+#define same_type_p(TYPE1, TYPE2) \
+  comptypes ((TYPE1), (TYPE2), COMPARE_STRICT)
+
+/* Returns nonzero iff NODE is a declaration for the global function
+   `main'.  */
+#define DECL_MAIN_P(NODE)				\
+   (DECL_EXTERN_C_FUNCTION_P (NODE)			\
+    && DECL_NAME (NODE) != NULL_TREE			\
+    && MAIN_NAME_P (DECL_NAME (NODE))			\
+    && flag_hosted)
+
+/* The overloaded FUNCTION_DECL.  */
+#define OVL_FUNCTION(NODE) \
+  (((struct tree_overload*)OVERLOAD_CHECK (NODE))->function)
+#define OVL_CHAIN(NODE)      TREE_CHAIN (NODE)
+/* Polymorphic access to FUNCTION and CHAIN.  */
+#define OVL_CURRENT(NODE)	\
+  ((TREE_CODE (NODE) == OVERLOAD) ? OVL_FUNCTION (NODE) : (NODE))
+#define OVL_NEXT(NODE)		\
+  ((TREE_CODE (NODE) == OVERLOAD) ? TREE_CHAIN (NODE) : NULL_TREE)
+/* If set, this was imported in a using declaration.
+   This is not to confuse with being used somewhere, which
+   is not important for this node.  */
+#define OVL_USED(NODE)		TREE_USED (OVERLOAD_CHECK (NODE))
+/* If set, this OVERLOAD was created for argument-dependent lookup
+   and can be freed afterward.  */
+#define OVL_ARG_DEPENDENT(NODE) TREE_LANG_FLAG_0 (OVERLOAD_CHECK (NODE))
+
+struct GTY(()) tree_overload {
+  struct tree_common common;
+  tree function;
+};
+
+/* Returns true iff NODE is a BASELINK.  */
+#define BASELINK_P(NODE) \
+  (TREE_CODE (NODE) == BASELINK)
+/* The BINFO indicating the base in which lookup found the
+   BASELINK_FUNCTIONS.  */
+#define BASELINK_BINFO(NODE) \
+  (((struct tree_baselink*) BASELINK_CHECK (NODE))->binfo)
+/* The functions referred to by the BASELINK; either a FUNCTION_DECL,
+   a TEMPLATE_DECL, an OVERLOAD, or a TEMPLATE_ID_EXPR.  */
+#define BASELINK_FUNCTIONS(NODE) \
+  (((struct tree_baselink*) BASELINK_CHECK (NODE))->functions)
+/* The BINFO in which the search for the functions indicated by this baselink
+   began.  This base is used to determine the accessibility of functions
+   selected by overload resolution.  */
+#define BASELINK_ACCESS_BINFO(NODE) \
+  (((struct tree_baselink*) BASELINK_CHECK (NODE))->access_binfo)
+/* For a type-conversion operator, the BASELINK_OPTYPE indicates the type
+   to which the conversion should occur.  This value is important if
+   the BASELINK_FUNCTIONS include a template conversion operator --
+   the BASELINK_OPTYPE can be used to determine what type the user
+   requested.  */
+#define BASELINK_OPTYPE(NODE) \
+  (TREE_CHAIN (BASELINK_CHECK (NODE)))
+/* Nonzero if this baselink was from a qualified lookup.  */
+#define BASELINK_QUALIFIED_P(NODE) \
+  TREE_LANG_FLAG_0 (BASELINK_CHECK (NODE))
+
+struct GTY(()) tree_baselink {
+  struct tree_common common;
+  tree binfo;
+  tree functions;
+  tree access_binfo;
+};
+
+/* The different kinds of ids that we encounter.  */
+
+typedef enum cp_id_kind
+{
+  /* Not an id at all.  */
+  CP_ID_KIND_NONE,
+  /* An unqualified-id that is not a template-id.  */
+  CP_ID_KIND_UNQUALIFIED,
+  /* An unqualified-id that is a dependent name.  */
+  CP_ID_KIND_UNQUALIFIED_DEPENDENT,
+  /* An unqualified template-id.  */
+  CP_ID_KIND_TEMPLATE_ID,
+  /* A qualified-id.  */
+  CP_ID_KIND_QUALIFIED
+} cp_id_kind;
+
+
+/* The various kinds of C++0x warnings we encounter. */
+
+typedef enum cpp0x_warn_str
+{
+  /* extended initializer lists */
+  CPP0X_INITIALIZER_LISTS,
+  /* explicit conversion operators */
+  CPP0X_EXPLICIT_CONVERSION,
+  /* variadic templates */
+  CPP0X_VARIADIC_TEMPLATES,
+  /* lambda expressions */
+  CPP0X_LAMBDA_EXPR,
+  /* C++0x auto */
+  CPP0X_AUTO,
+  /* scoped enums */
+  CPP0X_SCOPED_ENUMS,
+  /* defaulted and deleted functions */
+  CPP0X_DEFAULTED_DELETED,
+  /* inline namespaces */
+  CPP0X_INLINE_NAMESPACES,
+  /* override controls, override/final */
+  CPP0X_OVERRIDE_CONTROLS,
+  /* non-static data member initializers */
+  CPP0X_NSDMI,
+  /* user defined literals */
+  CPP0X_USER_DEFINED_LITERALS,
+  /* delegating constructors */
+  CPP0X_DELEGATING_CTORS,
+  /* inheriting constructors */
+  CPP0X_INHERITING_CTORS,
+  /* C++11 attributes */
+  CPP0X_ATTRIBUTES,
+  /* ref-qualified member functions */
+  CPP0X_REF_QUALIFIER
+} cpp0x_warn_str;
+
+/* The various kinds of operation used by composite_pointer_type. */
+
+typedef enum composite_pointer_operation
+{
+  /* comparison */
+  CPO_COMPARISON,
+  /* conversion */
+  CPO_CONVERSION,
+  /* conditional expression */
+  CPO_CONDITIONAL_EXPR
+} composite_pointer_operation;
+
+/* Possible cases of expression list used by build_x_compound_expr_from_list. */
+typedef enum expr_list_kind {
+  ELK_INIT,		/* initializer */
+  ELK_MEM_INIT,		/* member initializer */
+  ELK_FUNC_CAST		/* functional cast */
+} expr_list_kind; 
+
+/* Possible cases of implicit bad rhs conversions. */
+typedef enum impl_conv_rhs {
+  ICR_DEFAULT_ARGUMENT, /* default argument */
+  ICR_CONVERTING,       /* converting */
+  ICR_INIT,             /* initialization */
+  ICR_ARGPASS,          /* argument passing */
+  ICR_RETURN,           /* return */
+  ICR_ASSIGN            /* assignment */
+} impl_conv_rhs;
+
+/* Possible cases of implicit or explicit bad conversions to void. */
+typedef enum impl_conv_void {
+  ICV_CAST,            /* (explicit) conversion to void */
+  ICV_SECOND_OF_COND,  /* second operand of conditional expression */
+  ICV_THIRD_OF_COND,   /* third operand of conditional expression */
+  ICV_RIGHT_OF_COMMA,  /* right operand of comma operator */
+  ICV_LEFT_OF_COMMA,   /* left operand of comma operator */
+  ICV_STATEMENT,       /* statement */
+  ICV_THIRD_IN_FOR     /* for increment expression */
+} impl_conv_void;
+
+/* Possible invalid uses of an abstract class that might not have a
+   specific associated declaration.  */
+typedef enum abstract_class_use {
+  ACU_UNKNOWN,			/* unknown or decl provided */
+  ACU_CAST,			/* cast to abstract class */
+  ACU_NEW,			/* new-expression of abstract class */
+  ACU_THROW,			/* throw-expression of abstract class */
+  ACU_CATCH,			/* catch-parameter of abstract class */
+  ACU_ARRAY,			/* array of abstract class */
+  ACU_RETURN,			/* return type of abstract class */
+  ACU_PARM			/* parameter type of abstract class */
+} abstract_class_use;
+
+/* Macros for access to language-specific slots in an identifier.  */
+
+#define IDENTIFIER_NAMESPACE_BINDINGS(NODE)	\
+  (LANG_IDENTIFIER_CAST (NODE)->namespace_bindings)
+#define IDENTIFIER_TEMPLATE(NODE)	\
+  (LANG_IDENTIFIER_CAST (NODE)->class_template_info)
+
+/* The IDENTIFIER_BINDING is the innermost cxx_binding for the
+    identifier.  It's PREVIOUS is the next outermost binding.  Each
+    VALUE field is a DECL for the associated declaration.  Thus,
+    name lookup consists simply of pulling off the node at the front
+    of the list (modulo oddities for looking up the names of types,
+    and such.)  You can use SCOPE field to determine the scope
+    that bound the name.  */
+#define IDENTIFIER_BINDING(NODE) \
+  (LANG_IDENTIFIER_CAST (NODE)->bindings)
+
+/* TREE_TYPE only indicates on local and class scope the current
+   type. For namespace scope, the presence of a type in any namespace
+   is indicated with global_type_node, and the real type behind must
+   be found through lookup.  */
+#define IDENTIFIER_TYPE_VALUE(NODE) identifier_type_value (NODE)
+#define REAL_IDENTIFIER_TYPE_VALUE(NODE) TREE_TYPE (NODE)
+#define SET_IDENTIFIER_TYPE_VALUE(NODE,TYPE) (TREE_TYPE (NODE) = (TYPE))
+#define IDENTIFIER_HAS_TYPE_VALUE(NODE) (IDENTIFIER_TYPE_VALUE (NODE) ? 1 : 0)
+
+#define IDENTIFIER_LABEL_VALUE(NODE) \
+  (LANG_IDENTIFIER_CAST (NODE)->label_value)
+#define SET_IDENTIFIER_LABEL_VALUE(NODE, VALUE)   \
+  IDENTIFIER_LABEL_VALUE (NODE) = (VALUE)
+
+/* Nonzero if this identifier is used as a virtual function name somewhere
+   (optimizes searches).  */
+#define IDENTIFIER_VIRTUAL_P(NODE) TREE_LANG_FLAG_1 (NODE)
+
+/* Nonzero if this identifier is the prefix for a mangled C++ operator
+   name.  */
+#define IDENTIFIER_OPNAME_P(NODE) TREE_LANG_FLAG_2 (NODE)
+
+/* Nonzero if this identifier is the name of a type-conversion
+   operator.  */
+#define IDENTIFIER_TYPENAME_P(NODE) \
+  TREE_LANG_FLAG_4 (NODE)
+
+/* Nonzero if this identifier is the name of a constructor or
+   destructor.  */
+#define IDENTIFIER_CTOR_OR_DTOR_P(NODE) \
+  TREE_LANG_FLAG_3 (NODE)
+
+/* True iff NAME is the DECL_ASSEMBLER_NAME for an entity with vague
+   linkage which the prelinker has assigned to this translation
+   unit.  */
+#define IDENTIFIER_REPO_CHOSEN(NAME) \
+  (TREE_LANG_FLAG_6 (NAME))
+
+/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only.  */
+#define C_TYPE_FIELDS_READONLY(TYPE) \
+  (LANG_TYPE_CLASS_CHECK (TYPE)->fields_readonly)
+
+/* The tokens stored in the default argument.  */
+
+#define DEFARG_TOKENS(NODE) \
+  (((struct tree_default_arg *)DEFAULT_ARG_CHECK (NODE))->tokens)
+#define DEFARG_INSTANTIATIONS(NODE) \
+  (((struct tree_default_arg *)DEFAULT_ARG_CHECK (NODE))->instantiations)
+
+struct GTY (()) tree_default_arg {
+  struct tree_common common;
+  struct cp_token_cache *tokens;
+  vec<tree, va_gc> *instantiations;
+};
+
+
+#define DEFERRED_NOEXCEPT_PATTERN(NODE) \
+  (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->pattern)
+#define DEFERRED_NOEXCEPT_ARGS(NODE) \
+  (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->args)
+#define DEFERRED_NOEXCEPT_SPEC_P(NODE)				\
+  ((NODE) && (TREE_PURPOSE (NODE))				\
+  && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_NOEXCEPT	\
+      || is_overloaded_fn (TREE_PURPOSE (NODE))))
+
+struct GTY (()) tree_deferred_noexcept {
+  struct tree_base base;
+  tree pattern;
+  tree args;
+};
+
+
+/* The condition associated with the static assertion.  This must be
+   an integral constant expression.  */
+#define STATIC_ASSERT_CONDITION(NODE) \
+  (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->condition)
+
+/* The message associated with the static assertion.  This must be a
+   string constant, which will be emitted as an error message when the
+   static assert condition is false.  */
+#define STATIC_ASSERT_MESSAGE(NODE) \
+  (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->message)
+
+/* Source location information for a static assertion.  */
+#define STATIC_ASSERT_SOURCE_LOCATION(NODE) \
+  (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->location)
+
+struct GTY (()) tree_static_assert {
+  struct tree_common common;
+  tree condition;
+  tree message;
+  location_t location;
+};
+
+struct GTY (()) tree_argument_pack_select {
+  struct tree_common common;
+  tree argument_pack;
+  int index;
+};
+
+/* The different kinds of traits that we encounter.  */
+
+typedef enum cp_trait_kind
+{
+  CPTK_BASES,
+  CPTK_DIRECT_BASES,
+  CPTK_HAS_NOTHROW_ASSIGN,
+  CPTK_HAS_NOTHROW_CONSTRUCTOR,
+  CPTK_HAS_NOTHROW_COPY,
+  CPTK_HAS_TRIVIAL_ASSIGN,
+  CPTK_HAS_TRIVIAL_CONSTRUCTOR,
+  CPTK_HAS_TRIVIAL_COPY,
+  CPTK_HAS_TRIVIAL_DESTRUCTOR,
+  CPTK_HAS_VIRTUAL_DESTRUCTOR,
+  CPTK_IS_ABSTRACT,
+  CPTK_IS_BASE_OF,
+  CPTK_IS_CLASS,
+  CPTK_IS_CONVERTIBLE_TO,
+  CPTK_IS_EMPTY,
+  CPTK_IS_ENUM,
+  CPTK_IS_FINAL,
+  CPTK_IS_LITERAL_TYPE,
+  CPTK_IS_POD,
+  CPTK_IS_POLYMORPHIC,
+  CPTK_IS_STD_LAYOUT,
+  CPTK_IS_TRIVIAL,
+  CPTK_IS_UNION,
+  CPTK_UNDERLYING_TYPE
+} cp_trait_kind;
+
+/* The types that we are processing.  */
+#define TRAIT_EXPR_TYPE1(NODE) \
+  (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type1)
+
+#define TRAIT_EXPR_TYPE2(NODE) \
+  (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type2)
+
+/* The specific trait that we are processing.  */
+#define TRAIT_EXPR_KIND(NODE) \
+  (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->kind)
+
+struct GTY (()) tree_trait_expr {
+  struct tree_common common;
+  tree type1;
+  tree type2;  
+  enum cp_trait_kind kind;
+};
+
+/* Based off of TYPE_ANONYMOUS_P.  */
+#define LAMBDA_TYPE_P(NODE) \
+  (CLASS_TYPE_P (NODE) && CLASSTYPE_LAMBDA_EXPR (NODE))
+
+/* Test if FUNCTION_DECL is a lambda function.  */
+#define LAMBDA_FUNCTION_P(FNDECL) \
+  (DECL_OVERLOADED_OPERATOR_P (FNDECL) == CALL_EXPR \
+   && LAMBDA_TYPE_P (CP_DECL_CONTEXT (FNDECL)))
+
+enum cp_lambda_default_capture_mode_type {
+  CPLD_NONE,
+  CPLD_COPY,
+  CPLD_REFERENCE
+};
+
+/* The method of default capture, if any.  */
+#define LAMBDA_EXPR_DEFAULT_CAPTURE_MODE(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->default_capture_mode)
+
+/* The capture-list, including `this'.  Each capture is stored as a FIELD_DECL
+ * so that the name, type, and field are all together, whether or not it has
+ * been added to the lambda's class type.
+   TREE_LIST:
+     TREE_PURPOSE: The FIELD_DECL for this capture.
+     TREE_VALUE: The initializer. This is part of a GNU extension.  */
+#define LAMBDA_EXPR_CAPTURE_LIST(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->capture_list)
+
+/* During parsing of the lambda-introducer, the node in the capture-list
+   that holds the 'this' capture.  During parsing of the body, the
+   capture proxy for that node.  */
+#define LAMBDA_EXPR_THIS_CAPTURE(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->this_capture)
+
+/* Predicate tracking whether `this' is in the effective capture set.  */
+#define LAMBDA_EXPR_CAPTURES_THIS_P(NODE) \
+  LAMBDA_EXPR_THIS_CAPTURE(NODE)
+
+/* Predicate tracking whether the lambda was declared 'mutable'.  */
+#define LAMBDA_EXPR_MUTABLE_P(NODE) \
+  TREE_LANG_FLAG_1 (LAMBDA_EXPR_CHECK (NODE))
+
+/* The return type in the expression.
+ * NULL_TREE indicates that none was specified.  */
+#define LAMBDA_EXPR_RETURN_TYPE(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->return_type)
+
+/* The source location of the lambda.  */
+#define LAMBDA_EXPR_LOCATION(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->locus)
+
+/* The mangling scope for the lambda: FUNCTION_DECL, PARM_DECL, VAR_DECL,
+   FIELD_DECL or NULL_TREE.  If this is NULL_TREE, we have no linkage.  */
+#define LAMBDA_EXPR_EXTRA_SCOPE(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->extra_scope)
+
+/* If EXTRA_SCOPE, this is the number of the lambda within that scope.  */
+#define LAMBDA_EXPR_DISCRIMINATOR(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->discriminator)
+
+/* During parsing of the lambda, a vector of capture proxies which need
+   to be pushed once we're done processing a nested lambda.  */
+#define LAMBDA_EXPR_PENDING_PROXIES(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->pending_proxies)
+
+/* The closure type of the lambda.  Note that the TREE_TYPE of a
+   LAMBDA_EXPR is always NULL_TREE, because we need to instantiate the
+   LAMBDA_EXPR in order to instantiate the type.  */
+#define LAMBDA_EXPR_CLOSURE(NODE) \
+  (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->closure)
+
+struct GTY (()) tree_lambda_expr
+{
+  struct tree_typed typed;
+  tree capture_list;
+  tree this_capture;
+  tree return_type;
+  tree extra_scope;
+  tree closure;
+  vec<tree, va_gc> *pending_proxies;
+  location_t locus;
+  enum cp_lambda_default_capture_mode_type default_capture_mode;
+  int discriminator;
+};
+
+/* A (typedef,context,usage location) triplet.
+   It represents a typedef used through a
+   context at a given source location.
+   e.g.
+   struct foo {
+     typedef int myint;
+   };
+
+   struct bar {
+    foo::myint v; // #1<-- this location.
+   };
+
+   In bar, the triplet will be (myint, foo, #1).
+   */
+struct GTY(()) qualified_typedef_usage_s {
+  tree typedef_decl;
+  tree context;
+  location_t locus;
+};
+typedef struct qualified_typedef_usage_s qualified_typedef_usage_t;
+
+/* Non-zero if this template specialization has access violations that
+   should be rechecked when the function is instantiated outside argument
+   deduction.  */
+#define TINFO_HAS_ACCESS_ERRORS(NODE) \
+  (TREE_LANG_FLAG_0 (TEMPLATE_INFO_CHECK (NODE)))
+#define FNDECL_HAS_ACCESS_ERRORS(NODE) \
+  (TINFO_HAS_ACCESS_ERRORS (DECL_TEMPLATE_INFO (NODE)))
+
+struct GTY(()) tree_template_info {
+  struct tree_common common;
+  vec<qualified_typedef_usage_t, va_gc> *typedefs_needing_access_checking;
+};
+
+enum cp_tree_node_structure_enum {
+  TS_CP_GENERIC,
+  TS_CP_IDENTIFIER,
+  TS_CP_TPI,
+  TS_CP_PTRMEM,
+  TS_CP_BINDING,
+  TS_CP_OVERLOAD,
+  TS_CP_BASELINK,
+  TS_CP_WRAPPER,
+  TS_CP_DEFAULT_ARG,
+  TS_CP_DEFERRED_NOEXCEPT,
+  TS_CP_STATIC_ASSERT,
+  TS_CP_ARGUMENT_PACK_SELECT,
+  TS_CP_TRAIT_EXPR,
+  TS_CP_LAMBDA_EXPR,
+  TS_CP_TEMPLATE_INFO,
+  TS_CP_USERDEF_LITERAL,
+  LAST_TS_CP_ENUM
+};
+
+/* The resulting tree type.  */
+union GTY((desc ("cp_tree_node_structure (&%h)"),
+       chain_next ("(union lang_tree_node *) c_tree_chain_next (&%h.generic)"))) lang_tree_node {
+  union tree_node GTY ((tag ("TS_CP_GENERIC"),
+			desc ("tree_node_structure (&%h)"))) generic;
+  struct template_parm_index_s GTY ((tag ("TS_CP_TPI"))) tpi;
+  struct ptrmem_cst GTY ((tag ("TS_CP_PTRMEM"))) ptrmem;
+  struct tree_overload GTY ((tag ("TS_CP_OVERLOAD"))) overload;
+  struct tree_baselink GTY ((tag ("TS_CP_BASELINK"))) baselink;
+  struct tree_default_arg GTY ((tag ("TS_CP_DEFAULT_ARG"))) default_arg;
+  struct tree_deferred_noexcept GTY ((tag ("TS_CP_DEFERRED_NOEXCEPT"))) deferred_noexcept;
+  struct lang_identifier GTY ((tag ("TS_CP_IDENTIFIER"))) identifier;
+  struct tree_static_assert GTY ((tag ("TS_CP_STATIC_ASSERT"))) 
+    static_assertion;
+  struct tree_argument_pack_select GTY ((tag ("TS_CP_ARGUMENT_PACK_SELECT")))
+    argument_pack_select;
+  struct tree_trait_expr GTY ((tag ("TS_CP_TRAIT_EXPR")))
+    trait_expression;
+  struct tree_lambda_expr GTY ((tag ("TS_CP_LAMBDA_EXPR")))
+    lambda_expression;
+  struct tree_template_info GTY ((tag ("TS_CP_TEMPLATE_INFO")))
+    template_info;
+  struct tree_userdef_literal GTY ((tag ("TS_CP_USERDEF_LITERAL")))
+    userdef_literal;
+};
+
+
+enum cp_tree_index
+{
+    CPTI_JAVA_BYTE_TYPE,
+    CPTI_JAVA_SHORT_TYPE,
+    CPTI_JAVA_INT_TYPE,
+    CPTI_JAVA_LONG_TYPE,
+    CPTI_JAVA_FLOAT_TYPE,
+    CPTI_JAVA_DOUBLE_TYPE,
+    CPTI_JAVA_CHAR_TYPE,
+    CPTI_JAVA_BOOLEAN_TYPE,
+
+    CPTI_WCHAR_DECL,
+    CPTI_VTABLE_ENTRY_TYPE,
+    CPTI_DELTA_TYPE,
+    CPTI_VTABLE_INDEX_TYPE,
+    CPTI_CLEANUP_TYPE,
+    CPTI_VTT_PARM_TYPE,
+
+    CPTI_CLASS_TYPE,
+    CPTI_UNKNOWN_TYPE,
+    CPTI_INIT_LIST_TYPE,
+    CPTI_VTBL_TYPE,
+    CPTI_VTBL_PTR_TYPE,
+    CPTI_STD,
+    CPTI_ABI,
+    CPTI_CONST_TYPE_INFO_TYPE,
+    CPTI_TYPE_INFO_PTR_TYPE,
+    CPTI_ABORT_FNDECL,
+    CPTI_GLOBAL_DELETE_FNDECL,
+    CPTI_AGGR_TAG,
+
+    CPTI_CTOR_IDENTIFIER,
+    CPTI_COMPLETE_CTOR_IDENTIFIER,
+    CPTI_BASE_CTOR_IDENTIFIER,
+    CPTI_DTOR_IDENTIFIER,
+    CPTI_COMPLETE_DTOR_IDENTIFIER,
+    CPTI_BASE_DTOR_IDENTIFIER,
+    CPTI_DELETING_DTOR_IDENTIFIER,
+    CPTI_DELTA_IDENTIFIER,
+    CPTI_IN_CHARGE_IDENTIFIER,
+    CPTI_VTT_PARM_IDENTIFIER,
+    CPTI_NELTS_IDENTIFIER,
+    CPTI_THIS_IDENTIFIER,
+    CPTI_PFN_IDENTIFIER,
+    CPTI_VPTR_IDENTIFIER,
+    CPTI_STD_IDENTIFIER,
+
+    CPTI_LANG_NAME_C,
+    CPTI_LANG_NAME_CPLUSPLUS,
+    CPTI_LANG_NAME_JAVA,
+
+    CPTI_EMPTY_EXCEPT_SPEC,
+    CPTI_NOEXCEPT_TRUE_SPEC,
+    CPTI_NOEXCEPT_FALSE_SPEC,
+    CPTI_JCLASS,
+    CPTI_TERMINATE,
+    CPTI_CALL_UNEXPECTED,
+    CPTI_ATEXIT_FN_PTR_TYPE,
+    CPTI_ATEXIT,
+    CPTI_DSO_HANDLE,
+    CPTI_DCAST,
+
+    CPTI_KEYED_CLASSES,
+
+    CPTI_NULLPTR,
+    CPTI_NULLPTR_TYPE,
+
+    CPTI_MAX
+};
+
+extern GTY(()) tree cp_global_trees[CPTI_MAX];
+
+#define java_byte_type_node		cp_global_trees[CPTI_JAVA_BYTE_TYPE]
+#define java_short_type_node		cp_global_trees[CPTI_JAVA_SHORT_TYPE]
+#define java_int_type_node		cp_global_trees[CPTI_JAVA_INT_TYPE]
+#define java_long_type_node		cp_global_trees[CPTI_JAVA_LONG_TYPE]
+#define java_float_type_node		cp_global_trees[CPTI_JAVA_FLOAT_TYPE]
+#define java_double_type_node		cp_global_trees[CPTI_JAVA_DOUBLE_TYPE]
+#define java_char_type_node		cp_global_trees[CPTI_JAVA_CHAR_TYPE]
+#define java_boolean_type_node		cp_global_trees[CPTI_JAVA_BOOLEAN_TYPE]
+
+#define wchar_decl_node			cp_global_trees[CPTI_WCHAR_DECL]
+#define vtable_entry_type		cp_global_trees[CPTI_VTABLE_ENTRY_TYPE]
+/* The type used to represent an offset by which to adjust the `this'
+   pointer in pointer-to-member types.  */
+#define delta_type_node			cp_global_trees[CPTI_DELTA_TYPE]
+/* The type used to represent an index into the vtable.  */
+#define vtable_index_type		cp_global_trees[CPTI_VTABLE_INDEX_TYPE]
+
+#define class_type_node			cp_global_trees[CPTI_CLASS_TYPE]
+#define unknown_type_node		cp_global_trees[CPTI_UNKNOWN_TYPE]
+#define init_list_type_node		cp_global_trees[CPTI_INIT_LIST_TYPE]
+#define vtbl_type_node			cp_global_trees[CPTI_VTBL_TYPE]
+#define vtbl_ptr_type_node		cp_global_trees[CPTI_VTBL_PTR_TYPE]
+#define std_node			cp_global_trees[CPTI_STD]
+#define abi_node			cp_global_trees[CPTI_ABI]
+#define const_type_info_type_node	cp_global_trees[CPTI_CONST_TYPE_INFO_TYPE]
+#define type_info_ptr_type		cp_global_trees[CPTI_TYPE_INFO_PTR_TYPE]
+#define abort_fndecl			cp_global_trees[CPTI_ABORT_FNDECL]
+#define global_delete_fndecl		cp_global_trees[CPTI_GLOBAL_DELETE_FNDECL]
+#define current_aggr			cp_global_trees[CPTI_AGGR_TAG]
+#define nullptr_node			cp_global_trees[CPTI_NULLPTR]
+#define nullptr_type_node		cp_global_trees[CPTI_NULLPTR_TYPE]
+
+/* We cache these tree nodes so as to call get_identifier less
+   frequently.  */
+
+/* The name of a constructor that takes an in-charge parameter to
+   decide whether or not to construct virtual base classes.  */
+#define ctor_identifier			cp_global_trees[CPTI_CTOR_IDENTIFIER]
+/* The name of a constructor that constructs virtual base classes.  */
+#define complete_ctor_identifier	cp_global_trees[CPTI_COMPLETE_CTOR_IDENTIFIER]
+/* The name of a constructor that does not construct virtual base classes.  */
+#define base_ctor_identifier		cp_global_trees[CPTI_BASE_CTOR_IDENTIFIER]
+/* The name of a destructor that takes an in-charge parameter to
+   decide whether or not to destroy virtual base classes and whether
+   or not to delete the object.  */
+#define dtor_identifier			cp_global_trees[CPTI_DTOR_IDENTIFIER]
+/* The name of a destructor that destroys virtual base classes.  */
+#define complete_dtor_identifier	cp_global_trees[CPTI_COMPLETE_DTOR_IDENTIFIER]
+/* The name of a destructor that does not destroy virtual base
+   classes.  */
+#define base_dtor_identifier		cp_global_trees[CPTI_BASE_DTOR_IDENTIFIER]
+/* The name of a destructor that destroys virtual base classes, and
+   then deletes the entire object.  */
+#define deleting_dtor_identifier	cp_global_trees[CPTI_DELETING_DTOR_IDENTIFIER]
+#define delta_identifier		cp_global_trees[CPTI_DELTA_IDENTIFIER]
+#define in_charge_identifier		cp_global_trees[CPTI_IN_CHARGE_IDENTIFIER]
+/* The name of the parameter that contains a pointer to the VTT to use
+   for this subobject constructor or destructor.  */
+#define vtt_parm_identifier		cp_global_trees[CPTI_VTT_PARM_IDENTIFIER]
+#define nelts_identifier		cp_global_trees[CPTI_NELTS_IDENTIFIER]
+#define this_identifier			cp_global_trees[CPTI_THIS_IDENTIFIER]
+#define pfn_identifier			cp_global_trees[CPTI_PFN_IDENTIFIER]
+#define vptr_identifier			cp_global_trees[CPTI_VPTR_IDENTIFIER]
+/* The name of the std namespace.  */
+#define std_identifier			cp_global_trees[CPTI_STD_IDENTIFIER]
+#define lang_name_c			cp_global_trees[CPTI_LANG_NAME_C]
+#define lang_name_cplusplus		cp_global_trees[CPTI_LANG_NAME_CPLUSPLUS]
+#define lang_name_java			cp_global_trees[CPTI_LANG_NAME_JAVA]
+
+/* Exception specifier used for throw().  */
+#define empty_except_spec		cp_global_trees[CPTI_EMPTY_EXCEPT_SPEC]
+#define noexcept_true_spec		cp_global_trees[CPTI_NOEXCEPT_TRUE_SPEC]
+#define noexcept_false_spec		cp_global_trees[CPTI_NOEXCEPT_FALSE_SPEC]
+
+/* If non-NULL, a POINTER_TYPE equivalent to (java::lang::Class*).  */
+#define jclass_node			cp_global_trees[CPTI_JCLASS]
+
+/* The declaration for `std::terminate'.  */
+#define terminate_node			cp_global_trees[CPTI_TERMINATE]
+
+/* The declaration for "__cxa_call_unexpected".  */
+#define call_unexpected_node		cp_global_trees[CPTI_CALL_UNEXPECTED]
+
+/* The type of the function-pointer argument to "__cxa_atexit" (or
+   "std::atexit", if "__cxa_atexit" is not being used).  */
+#define atexit_fn_ptr_type_node         cp_global_trees[CPTI_ATEXIT_FN_PTR_TYPE]
+
+/* A pointer to `std::atexit'.  */
+#define atexit_node			cp_global_trees[CPTI_ATEXIT]
+
+/* A pointer to `__dso_handle'.  */
+#define dso_handle_node			cp_global_trees[CPTI_DSO_HANDLE]
+
+/* The declaration of the dynamic_cast runtime.  */
+#define dynamic_cast_node		cp_global_trees[CPTI_DCAST]
+
+/* The type of a destructor.  */
+#define cleanup_type			cp_global_trees[CPTI_CLEANUP_TYPE]
+
+/* The type of the vtt parameter passed to subobject constructors and
+   destructors.  */
+#define vtt_parm_type			cp_global_trees[CPTI_VTT_PARM_TYPE]
+
+/* A TREE_LIST of the dynamic classes whose vtables may have to be
+   emitted in this translation unit.  */
+
+#define keyed_classes			cp_global_trees[CPTI_KEYED_CLASSES]
+
+/* Node to indicate default access. This must be distinct from the
+   access nodes in tree.h.  */
+
+#define access_default_node		null_node
+
+/* Global state.  */
+
+struct GTY(()) saved_scope {
+  vec<cxx_saved_binding, va_gc> *old_bindings;
+  tree old_namespace;
+  vec<tree, va_gc> *decl_ns_list;
+  tree class_name;
+  tree class_type;
+  tree access_specifier;
+  tree function_decl;
+  vec<tree, va_gc> *lang_base;
+  tree lang_name;
+  tree template_parms;
+  cp_binding_level *x_previous_class_level;
+  tree x_saved_tree;
+
+  /* Only used for uses of this in trailing return type.  */
+  tree x_current_class_ptr;
+  tree x_current_class_ref;
+
+  int x_processing_template_decl;
+  int x_processing_specialization;
+  BOOL_BITFIELD x_processing_explicit_instantiation : 1;
+  BOOL_BITFIELD need_pop_function_context : 1;
+
+  int unevaluated_operand;
+  int inhibit_evaluation_warnings;
+  /* If non-zero, implicit "omp declare target" attribute is added into the
+     attribute lists.  */
+  int omp_declare_target_attribute;
+
+  struct stmt_tree_s x_stmt_tree;
+
+  cp_binding_level *class_bindings;
+  cp_binding_level *bindings;
+
+  struct pointer_map_t *x_local_specializations;
+
+  struct saved_scope *prev;
+};
+
+/* The current open namespace.  */
+
+#define current_namespace scope_chain->old_namespace
+
+/* The stack for namespaces of current declarations.  */
+
+#define decl_namespace_list scope_chain->decl_ns_list
+
+/* IDENTIFIER_NODE: name of current class */
+
+#define current_class_name scope_chain->class_name
+
+/* _TYPE: the type of the current class */
+
+#define current_class_type scope_chain->class_type
+
+/* When parsing a class definition, the access specifier most recently
+   given by the user, or, if no access specifier was given, the
+   default value appropriate for the kind of class (i.e., struct,
+   class, or union).  */
+
+#define current_access_specifier scope_chain->access_specifier
+
+/* Pointer to the top of the language name stack.  */
+
+#define current_lang_base scope_chain->lang_base
+#define current_lang_name scope_chain->lang_name
+
+/* When parsing a template declaration, a TREE_LIST represents the
+   active template parameters.  Each node in the list represents one
+   level of template parameters.  The innermost level is first in the
+   list.  The depth of each level is stored as an INTEGER_CST in the
+   TREE_PURPOSE of each node.  The parameters for that level are
+   stored in the TREE_VALUE.  */
+
+#define current_template_parms scope_chain->template_parms
+
+#define processing_template_decl scope_chain->x_processing_template_decl
+#define processing_specialization scope_chain->x_processing_specialization
+#define processing_explicit_instantiation scope_chain->x_processing_explicit_instantiation
+
+/* The cached class binding level, from the most recently exited
+   class, or NULL if none.  */
+
+#define previous_class_level scope_chain->x_previous_class_level
+
+/* A map from local variable declarations in the body of the template
+   presently being instantiated to the corresponding instantiated
+   local variables.  */
+
+#define local_specializations scope_chain->x_local_specializations
+
+/* A list of private types mentioned, for deferred access checking.  */
+
+extern GTY(()) struct saved_scope *scope_chain;
+
+struct GTY(()) cxx_int_tree_map {
+  unsigned int uid;
+  tree to;
+};
+
+extern unsigned int cxx_int_tree_map_hash (const void *);
+extern int cxx_int_tree_map_eq (const void *, const void *);
+
+/* Global state pertinent to the current function.  */
+
+struct GTY(()) language_function {
+  struct c_language_function base;
+
+  tree x_cdtor_label;
+  tree x_current_class_ptr;
+  tree x_current_class_ref;
+  tree x_eh_spec_block;
+  tree x_in_charge_parm;
+  tree x_vtt_parm;
+  tree x_return_value;
+  tree x_auto_return_pattern;
+
+  BOOL_BITFIELD returns_value : 1;
+  BOOL_BITFIELD returns_null : 1;
+  BOOL_BITFIELD returns_abnormally : 1;
+  BOOL_BITFIELD infinite_loop: 1;
+  BOOL_BITFIELD x_in_function_try_handler : 1;
+  BOOL_BITFIELD x_in_base_initializer : 1;
+
+  /* True if this function can throw an exception.  */
+  BOOL_BITFIELD can_throw : 1;
+
+  htab_t GTY((param_is(struct named_label_entry))) x_named_labels;
+  cp_binding_level *bindings;
+  vec<tree, va_gc> *x_local_names;
+  /* Tracking possibly infinite loops.  This is a vec<tree> only because
+     vec<bool> doesn't work with gtype.  */
+  vec<tree, va_gc> *infinite_loops;
+  htab_t GTY((param_is (struct cxx_int_tree_map))) extern_decl_map;
+};
+
+/* The current C++-specific per-function global variables.  */
+
+#define cp_function_chain (cfun->language)
+
+/* In a constructor destructor, the point at which all derived class
+   destroying/construction has been done.  I.e., just before a
+   constructor returns, or before any base class destroying will be done
+   in a destructor.  */
+
+#define cdtor_label cp_function_chain->x_cdtor_label
+
+/* When we're processing a member function, current_class_ptr is the
+   PARM_DECL for the `this' pointer.  The current_class_ref is an
+   expression for `*this'.  */
+
+#define current_class_ptr			\
+  (*(cfun && cp_function_chain			\
+     ? &cp_function_chain->x_current_class_ptr	\
+     : &scope_chain->x_current_class_ptr))
+#define current_class_ref			\
+  (*(cfun && cp_function_chain			\
+     ? &cp_function_chain->x_current_class_ref	\
+     : &scope_chain->x_current_class_ref))
+
+/* The EH_SPEC_BLOCK for the exception-specifiers for the current
+   function, if any.  */
+
+#define current_eh_spec_block cp_function_chain->x_eh_spec_block
+
+/* The `__in_chrg' parameter for the current function.  Only used for
+   constructors and destructors.  */
+
+#define current_in_charge_parm cp_function_chain->x_in_charge_parm
+
+/* The `__vtt_parm' parameter for the current function.  Only used for
+   constructors and destructors.  */
+
+#define current_vtt_parm cp_function_chain->x_vtt_parm
+
+/* Set to 0 at beginning of a function definition, set to 1 if
+   a return statement that specifies a return value is seen.  */
+
+#define current_function_returns_value cp_function_chain->returns_value
+
+/* Set to 0 at beginning of a function definition, set to 1 if
+   a return statement with no argument is seen.  */
+
+#define current_function_returns_null cp_function_chain->returns_null
+
+/* Set to 0 at beginning of a function definition, set to 1 if
+   a call to a noreturn function is seen.  */
+
+#define current_function_returns_abnormally \
+  cp_function_chain->returns_abnormally
+
+/* Set to 0 at beginning of a function definition, set to 1 if we see an
+   obvious infinite loop.  This can have false positives and false
+   negatives, so it should only be used as a heuristic.  */
+
+#define current_function_infinite_loop cp_function_chain->infinite_loop
+
+/* Nonzero if we are processing a base initializer.  Zero elsewhere.  */
+#define in_base_initializer cp_function_chain->x_in_base_initializer
+
+#define in_function_try_handler cp_function_chain->x_in_function_try_handler
+
+/* Expression always returned from function, or error_mark_node
+   otherwise, for use by the automatic named return value optimization.  */
+
+#define current_function_return_value \
+  (cp_function_chain->x_return_value)
+
+/* A type involving 'auto' to be used for return type deduction.  */
+
+#define current_function_auto_return_pattern \
+  (cp_function_chain->x_auto_return_pattern)
+
+/* True if NAME is the IDENTIFIER_NODE for an overloaded "operator
+   new" or "operator delete".  */
+#define NEW_DELETE_OPNAME_P(NAME)		\
+  ((NAME) == ansi_opname (NEW_EXPR)		\
+   || (NAME) == ansi_opname (VEC_NEW_EXPR)	\
+   || (NAME) == ansi_opname (DELETE_EXPR)	\
+   || (NAME) == ansi_opname (VEC_DELETE_EXPR))
+
+#define ansi_opname(CODE) \
+  (operator_name_info[(int) (CODE)].identifier)
+#define ansi_assopname(CODE) \
+  (assignment_operator_name_info[(int) (CODE)].identifier)
+
+/* TRUE if a tree code represents a statement.  */
+extern bool statement_code_p[MAX_TREE_CODES];
+
+#define STATEMENT_CODE_P(CODE) statement_code_p[(int) (CODE)]
+
+enum languages { lang_c, lang_cplusplus, lang_java };
+
+/* Macros to make error reporting functions' lives easier.  */
+#define TYPE_IDENTIFIER(NODE) (DECL_NAME (TYPE_NAME (NODE)))
+#define TYPE_LINKAGE_IDENTIFIER(NODE) \
+  (TYPE_IDENTIFIER (TYPE_MAIN_VARIANT (NODE)))
+#define TYPE_NAME_STRING(NODE) (IDENTIFIER_POINTER (TYPE_IDENTIFIER (NODE)))
+#define TYPE_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (TYPE_IDENTIFIER (NODE)))
+
+/* Nonzero if NODE has no name for linkage purposes.  */
+#define TYPE_ANONYMOUS_P(NODE) \
+  (OVERLOAD_TYPE_P (NODE) && ANON_AGGRNAME_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
+
+/* The _DECL for this _TYPE.  */
+#define TYPE_MAIN_DECL(NODE) (TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
+
+/* Nonzero if T is a type that could resolve to any kind of concrete type
+   at instantiation time.  */
+#define WILDCARD_TYPE_P(T)				\
+  (TREE_CODE (T) == TEMPLATE_TYPE_PARM			\
+   || TREE_CODE (T) == TYPENAME_TYPE			\
+   || TREE_CODE (T) == TYPEOF_TYPE			\
+   || TREE_CODE (T) == BOUND_TEMPLATE_TEMPLATE_PARM	\
+   || TREE_CODE (T) == DECLTYPE_TYPE)
+
+/* Nonzero if T is a class (or struct or union) type.  Also nonzero
+   for template type parameters, typename types, and instantiated
+   template template parameters.  Keep these checks in ascending code
+   order.  */
+#define MAYBE_CLASS_TYPE_P(T) (WILDCARD_TYPE_P (T) || CLASS_TYPE_P (T))
+
+/* Set CLASS_TYPE_P for T to VAL.  T must be a class, struct, or
+   union type.  */
+#define SET_CLASS_TYPE_P(T, VAL) \
+  (TYPE_LANG_FLAG_5 (T) = (VAL))
+
+/* Nonzero if T is a class type.  Zero for template type parameters,
+   typename types, and so forth.  */
+#define CLASS_TYPE_P(T) \
+  (RECORD_OR_UNION_CODE_P (TREE_CODE (T)) && TYPE_LANG_FLAG_5 (T))
+
+/* Nonzero if T is a class type but not an union.  */
+#define NON_UNION_CLASS_TYPE_P(T) \
+  (CLASS_TYPE_P (T) && TREE_CODE (T) != UNION_TYPE)
+
+/* Keep these checks in ascending code order.  */
+#define RECORD_OR_UNION_CODE_P(T)	\
+  ((T) == RECORD_TYPE || (T) == UNION_TYPE)
+#define OVERLOAD_TYPE_P(T) \
+  (CLASS_TYPE_P (T) || TREE_CODE (T) == ENUMERAL_TYPE)
+
+/* True if this a "Java" type, defined in 'extern "Java"'.  */
+#define TYPE_FOR_JAVA(NODE) TYPE_LANG_FLAG_3 (NODE)
+
+/* True if this type is dependent.  This predicate is only valid if
+   TYPE_DEPENDENT_P_VALID is true.  */
+#define TYPE_DEPENDENT_P(NODE) TYPE_LANG_FLAG_0 (NODE)
+
+/* True if dependent_type_p has been called for this type, with the
+   result that TYPE_DEPENDENT_P is valid.  */
+#define TYPE_DEPENDENT_P_VALID(NODE) TYPE_LANG_FLAG_6(NODE)
+
+/* Nonzero if this type is const-qualified.  */
+#define CP_TYPE_CONST_P(NODE)				\
+  ((cp_type_quals (NODE) & TYPE_QUAL_CONST) != 0)
+
+/* Nonzero if this type is volatile-qualified.  */
+#define CP_TYPE_VOLATILE_P(NODE)			\
+  ((cp_type_quals (NODE) & TYPE_QUAL_VOLATILE) != 0)
+
+/* Nonzero if this type is restrict-qualified.  */
+#define CP_TYPE_RESTRICT_P(NODE)			\
+  ((cp_type_quals (NODE) & TYPE_QUAL_RESTRICT) != 0)
+
+/* Nonzero if this type is const-qualified, but not
+   volatile-qualified.  Other qualifiers are ignored.  This macro is
+   used to test whether or not it is OK to bind an rvalue to a
+   reference.  */
+#define CP_TYPE_CONST_NON_VOLATILE_P(NODE)				\
+  ((cp_type_quals (NODE) & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE))	\
+   == TYPE_QUAL_CONST)
+
+#define FUNCTION_ARG_CHAIN(NODE) \
+  TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (NODE)))
+
+/* Given a FUNCTION_DECL, returns the first TREE_LIST out of TYPE_ARG_TYPES
+   which refers to a user-written parameter.  */
+#define FUNCTION_FIRST_USER_PARMTYPE(NODE) \
+  skip_artificial_parms_for ((NODE), TYPE_ARG_TYPES (TREE_TYPE (NODE)))
+
+/* Similarly, but for DECL_ARGUMENTS.  */
+#define FUNCTION_FIRST_USER_PARM(NODE) \
+  skip_artificial_parms_for ((NODE), DECL_ARGUMENTS (NODE))
+
+/* Nonzero iff TYPE is derived from PARENT. Ignores accessibility and
+   ambiguity issues.  */
+#define DERIVED_FROM_P(PARENT, TYPE) \
+  (lookup_base ((TYPE), (PARENT), ba_any, NULL, tf_none) != NULL_TREE)
+
+/* Gives the visibility specification for a class type.  */
+#define CLASSTYPE_VISIBILITY(TYPE)		\
+	DECL_VISIBILITY (TYPE_MAIN_DECL (TYPE))
+#define CLASSTYPE_VISIBILITY_SPECIFIED(TYPE)	\
+	DECL_VISIBILITY_SPECIFIED (TYPE_MAIN_DECL (TYPE))
+
+typedef struct GTY (()) tree_pair_s {
+  tree purpose;
+  tree value;
+} tree_pair_s;
+typedef tree_pair_s *tree_pair_p;
+
+/* This is a few header flags for 'struct lang_type'.  Actually,
+   all but the first are used only for lang_type_class; they
+   are put in this structure to save space.  */
+struct GTY(()) lang_type_header {
+  BOOL_BITFIELD is_lang_type_class : 1;
+
+  BOOL_BITFIELD has_type_conversion : 1;
+  BOOL_BITFIELD has_copy_ctor : 1;
+  BOOL_BITFIELD has_default_ctor : 1;
+  BOOL_BITFIELD const_needs_init : 1;
+  BOOL_BITFIELD ref_needs_init : 1;
+  BOOL_BITFIELD has_const_copy_assign : 1;
+
+  BOOL_BITFIELD spare : 1;
+};
+
+/* This structure provides additional information above and beyond
+   what is provide in the ordinary tree_type.  In the past, we used it
+   for the types of class types, template parameters types, typename
+   types, and so forth.  However, there can be many (tens to hundreds
+   of thousands) of template parameter types in a compilation, and
+   there's no need for this additional information in that case.
+   Therefore, we now use this data structure only for class types.
+
+   In the past, it was thought that there would be relatively few
+   class types.  However, in the presence of heavy use of templates,
+   many (i.e., thousands) of classes can easily be generated.
+   Therefore, we should endeavor to keep the size of this structure to
+   a minimum.  */
+struct GTY(()) lang_type_class {
+  struct lang_type_header h;
+
+  unsigned char align;
+
+  unsigned has_mutable : 1;
+  unsigned com_interface : 1;
+  unsigned non_pod_class : 1;
+  unsigned nearly_empty_p : 1;
+  unsigned user_align : 1;
+  unsigned has_copy_assign : 1;
+  unsigned has_new : 1;
+  unsigned has_array_new : 1;
+
+  unsigned gets_delete : 2;
+  unsigned interface_only : 1;
+  unsigned interface_unknown : 1;
+  unsigned contains_empty_class_p : 1;
+  unsigned anon_aggr : 1;
+  unsigned non_zero_init : 1;
+  unsigned empty_p : 1;
+
+  unsigned vec_new_uses_cookie : 1;
+  unsigned declared_class : 1;
+  unsigned diamond_shaped : 1;
+  unsigned repeated_base : 1;
+  unsigned being_defined : 1;
+  unsigned java_interface : 1;
+  unsigned debug_requested : 1;
+  unsigned fields_readonly : 1;
+
+  unsigned use_template : 2;
+  unsigned ptrmemfunc_flag : 1;
+  unsigned was_anonymous : 1;
+  unsigned lazy_default_ctor : 1;
+  unsigned lazy_copy_ctor : 1;
+  unsigned lazy_copy_assign : 1;
+  unsigned lazy_destructor : 1;
+
+  unsigned has_const_copy_ctor : 1;
+  unsigned has_complex_copy_ctor : 1;
+  unsigned has_complex_copy_assign : 1;
+  unsigned non_aggregate : 1;
+  unsigned has_complex_dflt : 1;
+  unsigned has_list_ctor : 1;
+  unsigned non_std_layout : 1;
+  unsigned is_literal : 1;
+
+  unsigned lazy_move_ctor : 1;
+  unsigned lazy_move_assign : 1;
+  unsigned has_complex_move_ctor : 1;
+  unsigned has_complex_move_assign : 1;
+  unsigned has_constexpr_ctor : 1;
+
+  /* When adding a flag here, consider whether or not it ought to
+     apply to a template instance if it applies to the template.  If
+     so, make sure to copy it in instantiate_class_template!  */
+
+  /* There are some bits left to fill out a 32-bit word.  Keep track
+     of this by updating the size of this bitfield whenever you add or
+     remove a flag.  */
+  unsigned dummy : 3;
+
+  tree primary_base;
+  vec<tree_pair_s, va_gc> *vcall_indices;
+  tree vtables;
+  tree typeinfo_var;
+  vec<tree, va_gc> *vbases;
+  binding_table nested_udts;
+  tree as_base;
+  vec<tree, va_gc> *pure_virtuals;
+  tree friend_classes;
+  vec<tree, va_gc> * GTY((reorder ("resort_type_method_vec"))) methods;
+  tree key_method;
+  tree decl_list;
+  tree template_info;
+  tree befriending_classes;
+  /* In a RECORD_TYPE, information specific to Objective-C++, such
+     as a list of adopted protocols or a pointer to a corresponding
+     @interface.  See objc/objc-act.h for details.  */
+  tree objc_info;
+  /* sorted_fields is sorted based on a pointer, so we need to be able
+     to resort it if pointers get rearranged.  */
+  struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields")))
+    sorted_fields;
+  /* FIXME reuse another field?  */
+  tree lambda_expr;
+};
+
+struct GTY(()) lang_type_ptrmem {
+  struct lang_type_header h;
+  tree record;
+};
+
+struct GTY((variable_size)) lang_type {
+  union lang_type_u
+  {
+    struct lang_type_header GTY((skip (""))) h;
+    struct lang_type_class  GTY((tag ("1"))) c;
+    struct lang_type_ptrmem GTY((tag ("0"))) ptrmem;
+  } GTY((desc ("%h.h.is_lang_type_class"))) u;
+};
+
+#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
+
+#define LANG_TYPE_CLASS_CHECK(NODE) __extension__		\
+({  struct lang_type *lt = TYPE_LANG_SPECIFIC (NODE);		\
+    if (! lt->u.h.is_lang_type_class)				\
+      lang_check_failed (__FILE__, __LINE__, __FUNCTION__);	\
+    &lt->u.c; })
+
+#define LANG_TYPE_PTRMEM_CHECK(NODE) __extension__		\
+({  struct lang_type *lt = TYPE_LANG_SPECIFIC (NODE);		\
+    if (lt->u.h.is_lang_type_class)				\
+      lang_check_failed (__FILE__, __LINE__, __FUNCTION__);	\
+    &lt->u.ptrmem; })
+
+#else
+
+#define LANG_TYPE_CLASS_CHECK(NODE) (&TYPE_LANG_SPECIFIC (NODE)->u.c)
+#define LANG_TYPE_PTRMEM_CHECK(NODE) (&TYPE_LANG_SPECIFIC (NODE)->u.ptrmem)
+
+#endif /* ENABLE_TREE_CHECKING */
+
+/* Nonzero for _CLASSTYPE means that operator delete is defined.  */
+#define TYPE_GETS_DELETE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->gets_delete)
+#define TYPE_GETS_REG_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 1)
+
+/* Nonzero if `new NODE[x]' should cause the allocation of extra
+   storage to indicate how many array elements are in use.  */
+#define TYPE_VEC_NEW_USES_COOKIE(NODE)			\
+  (CLASS_TYPE_P (NODE)					\
+   && LANG_TYPE_CLASS_CHECK (NODE)->vec_new_uses_cookie)
+
+/* Nonzero means that this _CLASSTYPE node defines ways of converting
+   itself to other types.  */
+#define TYPE_HAS_CONVERSION(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->h.has_type_conversion)
+
+/* Nonzero means that NODE (a class type) has a default constructor --
+   but that it has not yet been declared.  */
+#define CLASSTYPE_LAZY_DEFAULT_CTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lazy_default_ctor)
+
+/* Nonzero means that NODE (a class type) has a copy constructor --
+   but that it has not yet been declared.  */
+#define CLASSTYPE_LAZY_COPY_CTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_ctor)
+
+/* Nonzero means that NODE (a class type) has a move constructor --
+   but that it has not yet been declared.  */
+#define CLASSTYPE_LAZY_MOVE_CTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_ctor)
+
+/* Nonzero means that NODE (a class type) has an assignment operator
+   -- but that it has not yet been declared.  */
+#define CLASSTYPE_LAZY_COPY_ASSIGN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_assign)
+
+/* Nonzero means that NODE (a class type) has an assignment operator
+   -- but that it has not yet been declared.  */
+#define CLASSTYPE_LAZY_MOVE_ASSIGN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_assign)
+
+/* Nonzero means that NODE (a class type) has a destructor -- but that
+   it has not yet been declared.  */
+#define CLASSTYPE_LAZY_DESTRUCTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lazy_destructor)
+
+/* Nonzero means that NODE (a class type) is final */
+#define CLASSTYPE_FINAL(NODE) \
+  TYPE_FINAL_P (NODE)
+
+
+/* Nonzero means that this _CLASSTYPE node overloads operator=(X&).  */
+#define TYPE_HAS_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_assign)
+
+/* True iff the class type NODE has an "operator =" whose parameter
+   has a parameter of type "const X&".  */
+#define TYPE_HAS_CONST_COPY_ASSIGN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->h.has_const_copy_assign)
+
+/* Nonzero means that this _CLASSTYPE node has an X(X&) constructor.  */
+#define TYPE_HAS_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->h.has_copy_ctor)
+#define TYPE_HAS_CONST_COPY_CTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_ctor)
+
+/* Nonzero if this class has an X(initializer_list<T>) constructor.  */
+#define TYPE_HAS_LIST_CTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->has_list_ctor)
+
+/* Nonzero if this class has a constexpr constructor other than a copy/move
+   constructor.  Note that a class can have constexpr constructors for
+   static initialization even if it isn't a literal class.  */
+#define TYPE_HAS_CONSTEXPR_CTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->has_constexpr_ctor)
+
+/* Nonzero if this class defines an overloaded operator new.  (An
+   operator new [] doesn't count.)  */
+#define TYPE_HAS_NEW_OPERATOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->has_new)
+
+/* Nonzero if this class defines an overloaded operator new[].  */
+#define TYPE_HAS_ARRAY_NEW_OPERATOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->has_array_new)
+
+/* Nonzero means that this type is being defined.  I.e., the left brace
+   starting the definition of this type has been seen.  */
+#define TYPE_BEING_DEFINED(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->being_defined)
+
+/* Nonzero means that this type is either complete or being defined, so we
+   can do lookup in it.  */
+#define COMPLETE_OR_OPEN_TYPE_P(NODE) \
+  (COMPLETE_TYPE_P (NODE) || (CLASS_TYPE_P (NODE) && TYPE_BEING_DEFINED (NODE)))
+
+/* Mark bits for repeated base checks.  */
+#define TYPE_MARKED_P(NODE) TREE_LANG_FLAG_6 (TYPE_CHECK (NODE))
+
+/* Nonzero if the class NODE has multiple paths to the same (virtual)
+   base object.  */
+#define CLASSTYPE_DIAMOND_SHAPED_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK(NODE)->diamond_shaped)
+
+/* Nonzero if the class NODE has multiple instances of the same base
+   type.  */
+#define CLASSTYPE_REPEATED_BASE_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK(NODE)->repeated_base)
+
+/* The member function with which the vtable will be emitted:
+   the first noninline non-pure-virtual member function.  NULL_TREE
+   if there is no key function or if this is a class template */
+#define CLASSTYPE_KEY_METHOD(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->key_method)
+
+/* Vector member functions defined in this class.  Each element is
+   either a FUNCTION_DECL, a TEMPLATE_DECL, or an OVERLOAD.  All
+   functions with the same name end up in the same slot.  The first
+   two elements are for constructors, and destructors, respectively.
+   All template conversion operators to innermost template dependent
+   types are overloaded on the next slot, if they exist.  Note, the
+   names for these functions will not all be the same.  The
+   non-template conversion operators & templated conversions to
+   non-innermost template types are next, followed by ordinary member
+   functions.  There may be empty entries at the end of the vector.
+   The conversion operators are unsorted. The ordinary member
+   functions are sorted, once the class is complete.  */
+#define CLASSTYPE_METHOD_VEC(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->methods)
+
+/* For class templates, this is a TREE_LIST of all member data,
+   functions, types, and friends in the order of declaration.
+   The TREE_PURPOSE of each TREE_LIST is NULL_TREE for a friend,
+   and the RECORD_TYPE for the class template otherwise.  */
+#define CLASSTYPE_DECL_LIST(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->decl_list)
+
+/* The slot in the CLASSTYPE_METHOD_VEC where constructors go.  */
+#define CLASSTYPE_CONSTRUCTOR_SLOT 0
+
+/* The slot in the CLASSTYPE_METHOD_VEC where destructors go.  */
+#define CLASSTYPE_DESTRUCTOR_SLOT 1
+
+/* The first slot in the CLASSTYPE_METHOD_VEC where conversion
+   operators can appear.  */
+#define CLASSTYPE_FIRST_CONVERSION_SLOT 2
+
+/* A FUNCTION_DECL or OVERLOAD for the constructors for NODE.  These
+   are the constructors that take an in-charge parameter.  */
+#define CLASSTYPE_CONSTRUCTORS(NODE) \
+  ((*CLASSTYPE_METHOD_VEC (NODE))[CLASSTYPE_CONSTRUCTOR_SLOT])
+
+/* A FUNCTION_DECL for the destructor for NODE.  These are the
+   destructors that take an in-charge parameter.  If
+   CLASSTYPE_LAZY_DESTRUCTOR is true, then this entry will be NULL
+   until the destructor is created with lazily_declare_fn.  */
+#define CLASSTYPE_DESTRUCTORS(NODE) \
+  (CLASSTYPE_METHOD_VEC (NODE)						      \
+   ? (*CLASSTYPE_METHOD_VEC (NODE))[CLASSTYPE_DESTRUCTOR_SLOT]		      \
+   : NULL_TREE)
+
+/* A dictionary of the nested user-defined-types (class-types, or enums)
+   found within this class.  This table includes nested member class
+   templates.  */
+#define CLASSTYPE_NESTED_UTDS(NODE) \
+   (LANG_TYPE_CLASS_CHECK (NODE)->nested_udts)
+
+/* Nonzero if NODE has a primary base class, i.e., a base class with
+   which it shares the virtual function table pointer.  */
+#define CLASSTYPE_HAS_PRIMARY_BASE_P(NODE) \
+  (CLASSTYPE_PRIMARY_BINFO (NODE) != NULL_TREE)
+
+/* If non-NULL, this is the binfo for the primary base class, i.e.,
+   the base class which contains the virtual function table pointer
+   for this class.  */
+#define CLASSTYPE_PRIMARY_BINFO(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->primary_base)
+
+/* A vector of BINFOs for the direct and indirect virtual base classes
+   that this type uses in a post-order depth-first left-to-right
+   order.  (In other words, these bases appear in the order that they
+   should be initialized.)  */
+#define CLASSTYPE_VBASECLASSES(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->vbases)
+
+/* The type corresponding to NODE when NODE is used as a base class,
+   i.e., NODE without virtual base classes.  */
+
+#define CLASSTYPE_AS_BASE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->as_base)
+
+/* True iff NODE is the CLASSTYPE_AS_BASE version of some type.  */
+
+#define IS_FAKE_BASE_TYPE(NODE)					\
+  (TREE_CODE (NODE) == RECORD_TYPE				\
+   && TYPE_CONTEXT (NODE) && CLASS_TYPE_P (TYPE_CONTEXT (NODE))	\
+   && CLASSTYPE_AS_BASE (TYPE_CONTEXT (NODE)) == (NODE))
+
+/* These are the size and alignment of the type without its virtual
+   base classes, for when we use this type as a base itself.  */
+#define CLASSTYPE_SIZE(NODE) TYPE_SIZE (CLASSTYPE_AS_BASE (NODE))
+#define CLASSTYPE_SIZE_UNIT(NODE) TYPE_SIZE_UNIT (CLASSTYPE_AS_BASE (NODE))
+#define CLASSTYPE_ALIGN(NODE) TYPE_ALIGN (CLASSTYPE_AS_BASE (NODE))
+#define CLASSTYPE_USER_ALIGN(NODE) TYPE_USER_ALIGN (CLASSTYPE_AS_BASE (NODE))
+
+/* The alignment of NODE, without its virtual bases, in bytes.  */
+#define CLASSTYPE_ALIGN_UNIT(NODE) \
+  (CLASSTYPE_ALIGN (NODE) / BITS_PER_UNIT)
+
+/* True if this a Java interface type, declared with
+   '__attribute__ ((java_interface))'.  */
+#define TYPE_JAVA_INTERFACE(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->java_interface)
+
+/* A vec<tree> of virtual functions which cannot be inherited by
+   derived classes.  When deriving from this type, the derived
+   class must provide its own definition for each of these functions.  */
+#define CLASSTYPE_PURE_VIRTUALS(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->pure_virtuals)
+
+/* Nonzero means that this type is an abstract class type.  */
+#define ABSTRACT_CLASS_TYPE_P(NODE) \
+  (CLASS_TYPE_P (NODE) && CLASSTYPE_PURE_VIRTUALS(NODE))
+
+/* Nonzero means that this type has an X() constructor.  */
+#define TYPE_HAS_DEFAULT_CONSTRUCTOR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->h.has_default_ctor)
+
+/* Nonzero means that this type contains a mutable member.  */
+#define CLASSTYPE_HAS_MUTABLE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_mutable)
+#define TYPE_HAS_MUTABLE_P(NODE) (cp_has_mutable_p (NODE))
+
+/* Nonzero means that this class type is not POD for the purpose of layout
+   (as defined in the ABI).  This is different from the language's POD.  */
+#define CLASSTYPE_NON_LAYOUT_POD_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_class)
+
+/* Nonzero means that this class type is a non-standard-layout class.  */
+#define CLASSTYPE_NON_STD_LAYOUT(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->non_std_layout)
+
+/* Nonzero means that this class contains pod types whose default
+   initialization is not a zero initialization (namely, pointers to
+   data members).  */
+#define CLASSTYPE_NON_ZERO_INIT_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->non_zero_init)
+
+/* Nonzero if this class is "empty" in the sense of the C++ ABI.  */
+#define CLASSTYPE_EMPTY_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->empty_p)
+
+/* Nonzero if this class is "nearly empty", i.e., contains only a
+   virtual function table pointer.  */
+#define CLASSTYPE_NEARLY_EMPTY_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->nearly_empty_p)
+
+/* Nonzero if this class contains an empty subobject.  */
+#define CLASSTYPE_CONTAINS_EMPTY_CLASS_P(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->contains_empty_class_p)
+
+/* A list of class types of which this type is a friend.  The
+   TREE_VALUE is normally a TYPE, but will be a TEMPLATE_DECL in the
+   case of a template friend.  */
+#define CLASSTYPE_FRIEND_CLASSES(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->friend_classes)
+
+/* A list of the classes which grant friendship to this class.  */
+#define CLASSTYPE_BEFRIENDING_CLASSES(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->befriending_classes)
+
+/* The associated LAMBDA_EXPR that made this class.  */
+#define CLASSTYPE_LAMBDA_EXPR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->lambda_expr)
+/* The extra mangling scope for this closure type.  */
+#define LAMBDA_TYPE_EXTRA_SCOPE(NODE) \
+  (LAMBDA_EXPR_EXTRA_SCOPE (CLASSTYPE_LAMBDA_EXPR (NODE)))
+
+/* Say whether this node was declared as a "class" or a "struct".  */
+#define CLASSTYPE_DECLARED_CLASS(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->declared_class)
+
+/* Nonzero if this class has const members
+   which have no specified initialization.  */
+#define CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE)	\
+  (TYPE_LANG_SPECIFIC (NODE)				\
+   ? LANG_TYPE_CLASS_CHECK (NODE)->h.const_needs_init : 0)
+#define SET_CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE, VALUE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->h.const_needs_init = (VALUE))
+
+/* Nonzero if this class has ref members
+   which have no specified initialization.  */
+#define CLASSTYPE_REF_FIELDS_NEED_INIT(NODE)		\
+  (TYPE_LANG_SPECIFIC (NODE)				\
+   ? LANG_TYPE_CLASS_CHECK (NODE)->h.ref_needs_init : 0)
+#define SET_CLASSTYPE_REF_FIELDS_NEED_INIT(NODE, VALUE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->h.ref_needs_init = (VALUE))
+
+/* Nonzero if this class is included from a header file which employs
+   `#pragma interface', and it is not included in its implementation file.  */
+#define CLASSTYPE_INTERFACE_ONLY(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->interface_only)
+
+/* True if we have already determined whether or not vtables, VTTs,
+   typeinfo, and other similar per-class data should be emitted in
+   this translation unit.  This flag does not indicate whether or not
+   these items should be emitted; it only indicates that we know one
+   way or the other.  */
+#define CLASSTYPE_INTERFACE_KNOWN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown == 0)
+/* The opposite of CLASSTYPE_INTERFACE_KNOWN.  */
+#define CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown)
+
+#define SET_CLASSTYPE_INTERFACE_UNKNOWN_X(NODE,X) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = !!(X))
+#define SET_CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 1)
+#define SET_CLASSTYPE_INTERFACE_KNOWN(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 0)
+
+/* Nonzero if a _DECL node requires us to output debug info for this class.  */
+#define CLASSTYPE_DEBUG_REQUESTED(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->debug_requested)
+
+/* Additional macros for inheritance information.  */
+
+/* Nonzero means that this class is on a path leading to a new vtable.  */
+#define BINFO_VTABLE_PATH_MARKED(NODE) BINFO_FLAG_1 (NODE)
+
+/* Nonzero means B (a BINFO) has its own vtable.  Any copies will not
+   have this flag set.  */
+#define BINFO_NEW_VTABLE_MARKED(B) (BINFO_FLAG_2 (B))
+
+/* Compare a BINFO_TYPE with another type for equality.  For a binfo,
+   this is functionally equivalent to using same_type_p, but
+   measurably faster.  At least one of the arguments must be a
+   BINFO_TYPE.  The other can be a BINFO_TYPE or a regular type.  If
+   BINFO_TYPE(T) ever stops being the main variant of the class the
+   binfo is for, this macro must change.  */
+#define SAME_BINFO_TYPE_P(A, B) ((A) == (B))
+
+/* Any subobject that needs a new vtable must have a vptr and must not
+   be a non-virtual primary base (since it would then use the vtable from a
+   derived class and never become non-primary.)  */
+#define SET_BINFO_NEW_VTABLE_MARKED(B)					 \
+  (BINFO_NEW_VTABLE_MARKED (B) = 1,					 \
+   gcc_assert (!BINFO_PRIMARY_P (B) || BINFO_VIRTUAL_P (B)),		 \
+   gcc_assert (TYPE_VFIELD (BINFO_TYPE (B))))
+
+/* Nonzero if this binfo is for a dependent base - one that should not
+   be searched.  */
+#define BINFO_DEPENDENT_BASE_P(NODE) BINFO_FLAG_3 (NODE)
+
+/* Nonzero if this binfo has lost its primary base binfo (because that
+   is a nearly-empty virtual base that has been taken by some other
+   base in the complete hierarchy.  */
+#define BINFO_LOST_PRIMARY_P(NODE) BINFO_FLAG_4 (NODE)
+
+/* Nonzero if this BINFO is a primary base class.  */
+#define BINFO_PRIMARY_P(NODE) BINFO_FLAG_5(NODE)
+
+/* Used by various search routines.  */
+#define IDENTIFIER_MARKED(NODE) TREE_LANG_FLAG_0 (NODE)
+
+/* A vec<tree_pair_s> of the vcall indices associated with the class
+   NODE.  The PURPOSE of each element is a FUNCTION_DECL for a virtual
+   function.  The VALUE is the index into the virtual table where the
+   vcall offset for that function is stored, when NODE is a virtual
+   base.  */
+#define CLASSTYPE_VCALL_INDICES(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->vcall_indices)
+
+/* The various vtables for the class NODE.  The primary vtable will be
+   first, followed by the construction vtables and VTT, if any.  */
+#define CLASSTYPE_VTABLES(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->vtables)
+
+/* The std::type_info variable representing this class, or NULL if no
+   such variable has been created.  This field is only set for the
+   TYPE_MAIN_VARIANT of the class.  */
+#define CLASSTYPE_TYPEINFO_VAR(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
+
+/* Accessor macros for the BINFO_VIRTUALS list.  */
+
+/* The number of bytes by which to adjust the `this' pointer when
+   calling this virtual function.  Subtract this value from the this
+   pointer. Always non-NULL, might be constant zero though.  */
+#define BV_DELTA(NODE) (TREE_PURPOSE (NODE))
+
+/* If non-NULL, the vtable index at which to find the vcall offset
+   when calling this virtual function.  Add the value at that vtable
+   index to the this pointer.  */
+#define BV_VCALL_INDEX(NODE) (TREE_TYPE (NODE))
+
+/* The function to call.  */
+#define BV_FN(NODE) (TREE_VALUE (NODE))
+
+/* Whether or not this entry is for a lost primary virtual base.  */
+#define BV_LOST_PRIMARY(NODE) (TREE_LANG_FLAG_0 (NODE))
+
+/* For FUNCTION_TYPE or METHOD_TYPE, a list of the exceptions that
+   this type can raise.  Each TREE_VALUE is a _TYPE.  The TREE_VALUE
+   will be NULL_TREE to indicate a throw specification of `()', or
+   no exceptions allowed.  For a noexcept specification, TREE_VALUE
+   is NULL_TREE and TREE_PURPOSE is the constant-expression.  For
+   a deferred noexcept-specification, TREE_PURPOSE is a DEFERRED_NOEXCEPT
+   (for templates) or an OVERLOAD list of functions (for implicitly
+   declared functions).  */
+#define TYPE_RAISES_EXCEPTIONS(NODE) \
+  TYPE_LANG_SLOT_1 (FUNC_OR_METHOD_CHECK (NODE))
+
+/* For FUNCTION_TYPE or METHOD_TYPE, return 1 iff it is declared `throw()'
+   or noexcept(true).  */
+#define TYPE_NOTHROW_P(NODE) nothrow_spec_p (TYPE_RAISES_EXCEPTIONS (NODE))
+
+/* For FUNCTION_TYPE or METHOD_TYPE, true if NODE is noexcept.  This is the
+   case for things declared noexcept(true) and, with -fnothrow-opt, for
+   throw() functions.  */
+#define TYPE_NOEXCEPT_P(NODE) type_noexcept_p (NODE)
+
+/* The binding level associated with the namespace.  */
+#define NAMESPACE_LEVEL(NODE) \
+  (LANG_DECL_NS_CHECK (NODE)->level)
+
+/* Flags shared by all forms of DECL_LANG_SPECIFIC.
+
+   Some of the flags live here only to make lang_decl_min/fn smaller.  Do
+   not make this struct larger than 32 bits; instead, make sel smaller.  */
+
+struct GTY(()) lang_decl_base {
+  unsigned selector : 16;   /* Larger than necessary for faster access.  */
+  ENUM_BITFIELD(languages) language : 4;
+  unsigned use_template : 2;
+  unsigned not_really_extern : 1;	   /* var or fn */
+  unsigned initialized_in_class : 1;	   /* var or fn */
+  unsigned repo_available_p : 1;	   /* var or fn */
+  unsigned threadprivate_or_deleted_p : 1; /* var or fn */
+  unsigned anticipated_p : 1;		   /* fn, type or template */
+  unsigned friend_attr : 1;		   /* fn, type or template */
+  unsigned template_conv_p : 1;		   /* var or template */
+  unsigned odr_used : 1;		   /* var or fn */
+  unsigned u2sel : 1;
+  /* 1 spare bit */
+};
+
+/* True for DECL codes which have template info and access.  */
+#define LANG_DECL_HAS_MIN(NODE)			\
+  (VAR_OR_FUNCTION_DECL_P (NODE)		\
+   || TREE_CODE (NODE) == FIELD_DECL		\
+   || TREE_CODE (NODE) == CONST_DECL		\
+   || TREE_CODE (NODE) == TYPE_DECL		\
+   || TREE_CODE (NODE) == TEMPLATE_DECL		\
+   || TREE_CODE (NODE) == USING_DECL)
+
+/* DECL_LANG_SPECIFIC for the above codes.  */
+
+struct GTY(()) lang_decl_min {
+  struct lang_decl_base base;
+
+  /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
+     THUNK_ALIAS.
+     In a FUNCTION_DECL for which DECL_THUNK_P does not hold,
+     VAR_DECL, TYPE_DECL, or TEMPLATE_DECL, this is
+     DECL_TEMPLATE_INFO.  */
+  tree template_info;
+
+  union lang_decl_u2 {
+    /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
+       THUNK_VIRTUAL_OFFSET.
+       Otherwise this is DECL_ACCESS.  */
+    tree GTY ((tag ("0"))) access;
+
+    /* For VAR_DECL in function, this is DECL_DISCRIMINATOR.  */
+    int GTY ((tag ("1"))) discriminator;
+  } GTY ((desc ("%0.u.base.u2sel"))) u2;
+};
+
+/* Additional DECL_LANG_SPECIFIC information for functions.  */
+
+struct GTY(()) lang_decl_fn {
+  struct lang_decl_min min;
+
+  /* In an overloaded operator, this is the value of
+     DECL_OVERLOADED_OPERATOR_P.  */
+  ENUM_BITFIELD (tree_code) operator_code : 16;
+
+  unsigned global_ctor_p : 1;
+  unsigned global_dtor_p : 1;
+  unsigned constructor_attr : 1;
+  unsigned destructor_attr : 1;
+  unsigned assignment_operator_p : 1;
+  unsigned static_function : 1;
+  unsigned pure_virtual : 1;
+  unsigned defaulted_p : 1;
+
+  unsigned has_in_charge_parm_p : 1;
+  unsigned has_vtt_parm_p : 1;
+  unsigned pending_inline_p : 1;
+  unsigned nonconverting : 1;
+  unsigned thunk_p : 1;
+  unsigned this_thunk_p : 1;
+  unsigned hidden_friend_p : 1;
+  unsigned omp_declare_reduction_p : 1;
+  /* No spare bits on 32-bit hosts, 32 on 64-bit hosts.  */
+
+  /* For a non-thunk function decl, this is a tree list of
+     friendly classes. For a thunk function decl, it is the
+     thunked to function decl.  */
+  tree befriending_classes;
+
+  /* For a non-virtual FUNCTION_DECL, this is
+     DECL_FRIEND_CONTEXT.  For a virtual FUNCTION_DECL for which
+     DECL_THIS_THUNK_P does not hold, this is DECL_THUNKS. Both
+     this pointer and result pointer adjusting thunks are
+     chained here.  This pointer thunks to return pointer thunks
+     will be chained on the return pointer thunk.  */
+  tree context;
+
+  union lang_decl_u5
+  {
+    /* In a non-thunk FUNCTION_DECL or TEMPLATE_DECL, this is
+       DECL_CLONED_FUNCTION.  */
+    tree GTY ((tag ("0"))) cloned_function;
+
+    /* In a FUNCTION_DECL for which THUNK_P holds this is the
+       THUNK_FIXED_OFFSET.  */
+    HOST_WIDE_INT GTY ((tag ("1"))) fixed_offset;
+  } GTY ((desc ("%1.thunk_p"))) u5;
+
+  union lang_decl_u3
+  {
+    struct cp_token_cache * GTY ((tag ("1"))) pending_inline_info;
+    struct language_function * GTY ((tag ("0")))
+      saved_language_function;
+  } GTY ((desc ("%1.pending_inline_p"))) u;
+
+};
+
+/* DECL_LANG_SPECIFIC for namespaces.  */
+
+struct GTY(()) lang_decl_ns {
+  struct lang_decl_base base;
+  cp_binding_level *level;
+};
+
+/* DECL_LANG_SPECIFIC for parameters.  */
+
+struct GTY(()) lang_decl_parm {
+  struct lang_decl_base base;
+  int level;
+  int index;
+};
+
+/* DECL_LANG_SPECIFIC for all types.  It would be nice to just make this a
+   union rather than a struct containing a union as its only field, but
+   tree.h declares it as a struct.  */
+
+struct GTY((variable_size)) lang_decl {
+  union GTY((desc ("%h.base.selector"))) lang_decl_u {
+    struct lang_decl_base GTY ((default)) base;
+    struct lang_decl_min GTY((tag ("0"))) min;
+    struct lang_decl_fn GTY ((tag ("1"))) fn;
+    struct lang_decl_ns GTY((tag ("2"))) ns;
+    struct lang_decl_parm GTY((tag ("3"))) parm;
+  } u;
+};
+
+/* Looks through a template (if present) to find what it declares.  */
+#define STRIP_TEMPLATE(NODE) \
+  (TREE_CODE (NODE) == TEMPLATE_DECL ? DECL_TEMPLATE_RESULT (NODE) : NODE)
+
+#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
+
+#define LANG_DECL_MIN_CHECK(NODE) __extension__			\
+({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE);		\
+   if (!LANG_DECL_HAS_MIN (NODE))				\
+     lang_check_failed (__FILE__, __LINE__, __FUNCTION__);	\
+   &lt->u.min; })
+
+/* We want to be able to check DECL_CONSTRUCTOR_P and such on a function
+   template, not just on a FUNCTION_DECL.  So when looking for things in
+   lang_decl_fn, look down through a TEMPLATE_DECL into its result.  */
+#define LANG_DECL_FN_CHECK(NODE) __extension__				\
+({ struct lang_decl *lt = DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE));	\
+   if (!DECL_DECLARES_FUNCTION_P (NODE) || lt->u.base.selector != 1)	\
+     lang_check_failed (__FILE__, __LINE__, __FUNCTION__);		\
+   &lt->u.fn; })
+
+#define LANG_DECL_NS_CHECK(NODE) __extension__				\
+({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE);			\
+   if (TREE_CODE (NODE) != NAMESPACE_DECL || lt->u.base.selector != 2)	\
+     lang_check_failed (__FILE__, __LINE__, __FUNCTION__);		\
+   &lt->u.ns; })
+
+#define LANG_DECL_PARM_CHECK(NODE) __extension__		\
+({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE);		\
+  if (TREE_CODE (NODE) != PARM_DECL)				\
+    lang_check_failed (__FILE__, __LINE__, __FUNCTION__);	\
+  &lt->u.parm; })
+
+#define LANG_DECL_U2_CHECK(NODE, TF) __extension__		\
+({  struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE);		\
+    if (!LANG_DECL_HAS_MIN (NODE) || lt->u.base.u2sel != TF)	\
+      lang_check_failed (__FILE__, __LINE__, __FUNCTION__);	\
+    &lt->u.min.u2; })
+
+#else
+
+#define LANG_DECL_MIN_CHECK(NODE) \
+  (&DECL_LANG_SPECIFIC (NODE)->u.min)
+
+#define LANG_DECL_FN_CHECK(NODE) \
+  (&DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE))->u.fn)
+
+#define LANG_DECL_NS_CHECK(NODE) \
+  (&DECL_LANG_SPECIFIC (NODE)->u.ns)
+
+#define LANG_DECL_PARM_CHECK(NODE) \
+  (&DECL_LANG_SPECIFIC (NODE)->u.parm)
+
+#define LANG_DECL_U2_CHECK(NODE, TF) \
+  (&DECL_LANG_SPECIFIC (NODE)->u.min.u2)
+
+#endif /* ENABLE_TREE_CHECKING */
+
+/* For a FUNCTION_DECL or a VAR_DECL, the language linkage for the
+   declaration.  Some entities (like a member function in a local
+   class, or a local variable) do not have linkage at all, and this
+   macro should not be used in those cases.
+
+   Implementation note: A FUNCTION_DECL without DECL_LANG_SPECIFIC was
+   created by language-independent code, and has C linkage.  Most
+   VAR_DECLs have C++ linkage, and do not have DECL_LANG_SPECIFIC, but
+   we do create DECL_LANG_SPECIFIC for variables with non-C++ linkage.  */
+#define DECL_LANGUAGE(NODE)				\
+  (DECL_LANG_SPECIFIC (NODE)				\
+   ? DECL_LANG_SPECIFIC (NODE)->u.base.language		\
+   : (TREE_CODE (NODE) == FUNCTION_DECL			\
+      ? lang_c : lang_cplusplus))
+
+/* Set the language linkage for NODE to LANGUAGE.  */
+#define SET_DECL_LANGUAGE(NODE, LANGUAGE) \
+  (DECL_LANG_SPECIFIC (NODE)->u.base.language = (LANGUAGE))
+
+/* For FUNCTION_DECLs and TEMPLATE_DECLs: nonzero means that this function
+   is a constructor.  */
+#define DECL_CONSTRUCTOR_P(NODE) \
+  DECL_CXX_CONSTRUCTOR_P (STRIP_TEMPLATE (NODE))
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a complete
+   object.  */
+#define DECL_COMPLETE_CONSTRUCTOR_P(NODE)		\
+  (DECL_CONSTRUCTOR_P (NODE)				\
+   && DECL_NAME (NODE) == complete_ctor_identifier)
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a base
+   object.  */
+#define DECL_BASE_CONSTRUCTOR_P(NODE)		\
+  (DECL_CONSTRUCTOR_P (NODE)			\
+   && DECL_NAME (NODE) == base_ctor_identifier)
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a constructor, but not either the
+   specialized in-charge constructor or the specialized not-in-charge
+   constructor.  */
+#define DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P(NODE)		\
+  (DECL_DECLARES_FUNCTION_P (NODE) && DECL_CONSTRUCTOR_P (NODE) \
+   && !DECL_CLONED_FUNCTION_P (NODE))
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a copy constructor.  */
+#define DECL_COPY_CONSTRUCTOR_P(NODE) \
+  (DECL_CONSTRUCTOR_P (NODE) && copy_fn_p (NODE) > 0)
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a move constructor.  */
+#define DECL_MOVE_CONSTRUCTOR_P(NODE) \
+  (DECL_CONSTRUCTOR_P (NODE) && move_fn_p (NODE))
+
+/* Nonzero if NODE (a FUNCTION_DECL or TEMPLATE_DECL)
+   is a destructor.  */
+#define DECL_DESTRUCTOR_P(NODE)				\
+  DECL_CXX_DESTRUCTOR_P (STRIP_TEMPLATE (NODE))
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a destructor, but not the
+   specialized in-charge constructor, in-charge deleting constructor,
+   or the base destructor.  */
+#define DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P(NODE)			\
+  (DECL_DECLARES_FUNCTION_P (NODE) && DECL_DESTRUCTOR_P (NODE)	\
+   && !DECL_CLONED_FUNCTION_P (NODE))
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
+   object.  */
+#define DECL_COMPLETE_DESTRUCTOR_P(NODE)		\
+  (DECL_DESTRUCTOR_P (NODE)				\
+   && DECL_NAME (NODE) == complete_dtor_identifier)
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a base
+   object.  */
+#define DECL_BASE_DESTRUCTOR_P(NODE)		\
+  (DECL_DESTRUCTOR_P (NODE)			\
+   && DECL_NAME (NODE) == base_dtor_identifier)
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
+   object that deletes the object after it has been destroyed.  */
+#define DECL_DELETING_DESTRUCTOR_P(NODE)		\
+  (DECL_DESTRUCTOR_P (NODE)				\
+   && DECL_NAME (NODE) == deleting_dtor_identifier)
+
+/* Nonzero if NODE (a FUNCTION_DECL) is a cloned constructor or
+   destructor.  */
+#define DECL_CLONED_FUNCTION_P(NODE) (!!decl_cloned_function_p (NODE, true))
+
+/* If DECL_CLONED_FUNCTION_P holds, this is the function that was
+   cloned.  */
+#define DECL_CLONED_FUNCTION(NODE) (*decl_cloned_function_p (NODE, false))
+
+/* Perform an action for each clone of FN, if FN is a function with
+   clones.  This macro should be used like:
+
+      FOR_EACH_CLONE (clone, fn)
+	{ ... }
+
+  */
+#define FOR_EACH_CLONE(CLONE, FN)			\
+  if (TREE_CODE (FN) == FUNCTION_DECL			\
+      && (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (FN)	\
+	  || DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (FN)))	\
+     for (CLONE = DECL_CHAIN (FN);			\
+	  CLONE && DECL_CLONED_FUNCTION_P (CLONE);	\
+	  CLONE = DECL_CHAIN (CLONE))
+
+/* Nonzero if NODE has DECL_DISCRIMINATOR and not DECL_ACCESS.  */
+#define DECL_DISCRIMINATOR_P(NODE)	\
+  (VAR_P (NODE) && DECL_FUNCTION_SCOPE_P (NODE))
+
+/* Discriminator for name mangling.  */
+#define DECL_DISCRIMINATOR(NODE) (LANG_DECL_U2_CHECK (NODE, 1)->discriminator)
+
+/* True iff DECL_DISCRIMINATOR is set for a DECL_DISCRIMINATOR_P decl.  */
+#define DECL_DISCRIMINATOR_SET_P(NODE) \
+  (DECL_LANG_SPECIFIC (NODE) && DECL_LANG_SPECIFIC (NODE)->u.base.u2sel == 1)
+
+/* The index of a user-declared parameter in its function, starting at 1.
+   All artificial parameters will have index 0.  */
+#define DECL_PARM_INDEX(NODE) \
+  (LANG_DECL_PARM_CHECK (NODE)->index)
+
+/* The level of a user-declared parameter in its function, starting at 1.
+   A parameter of the function will have level 1; a parameter of the first
+   nested function declarator (i.e. t in void f (void (*p)(T t))) will have
+   level 2.  */
+#define DECL_PARM_LEVEL(NODE) \
+  (LANG_DECL_PARM_CHECK (NODE)->level)
+
+/* Nonzero if the VTT parm has been added to NODE.  */
+#define DECL_HAS_VTT_PARM_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->has_vtt_parm_p)
+
+/* Nonzero if NODE is a FUNCTION_DECL for which a VTT parameter is
+   required.  */
+#define DECL_NEEDS_VTT_PARM_P(NODE)			\
+  (CLASSTYPE_VBASECLASSES (DECL_CONTEXT (NODE))		\
+   && (DECL_BASE_CONSTRUCTOR_P (NODE)			\
+       || DECL_BASE_DESTRUCTOR_P (NODE)))
+
+/* Nonzero if NODE is a user-defined conversion operator.  */
+#define DECL_CONV_FN_P(NODE) \
+  (DECL_NAME (NODE) && IDENTIFIER_TYPENAME_P (DECL_NAME (NODE)))
+
+/* If FN is a conversion operator, the type to which it converts.
+   Otherwise, NULL_TREE.  */
+#define DECL_CONV_FN_TYPE(FN) \
+  (DECL_CONV_FN_P (FN) ? TREE_TYPE (DECL_NAME (FN)) : NULL_TREE)
+
+/* Nonzero if NODE, which is a TEMPLATE_DECL, is a template
+   conversion operator to a type dependent on the innermost template
+   args.  */
+#define DECL_TEMPLATE_CONV_FN_P(NODE) \
+  (DECL_LANG_SPECIFIC (TEMPLATE_DECL_CHECK (NODE))->u.base.template_conv_p)
+
+/* Nonzero if NODE, a static data member, was declared in its class as an
+   array of unknown bound.  */
+#define VAR_HAD_UNKNOWN_BOUND(NODE)			\
+  (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))		\
+   ? DECL_LANG_SPECIFIC (NODE)->u.base.template_conv_p	\
+   : false)
+#define SET_VAR_HAD_UNKNOWN_BOUND(NODE) \
+  (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.template_conv_p = true)
+
+/* Set the overloaded operator code for NODE to CODE.  */
+#define SET_OVERLOADED_OPERATOR_CODE(NODE, CODE) \
+  (LANG_DECL_FN_CHECK (NODE)->operator_code = (CODE))
+
+/* If NODE is an overloaded operator, then this returns the TREE_CODE
+   associated with the overloaded operator.
+   DECL_ASSIGNMENT_OPERATOR_P must also be checked to determine
+   whether or not NODE is an assignment operator.  If NODE is not an
+   overloaded operator, ERROR_MARK is returned.  Since the numerical
+   value of ERROR_MARK is zero, this macro can be used as a predicate
+   to test whether or not NODE is an overloaded operator.  */
+#define DECL_OVERLOADED_OPERATOR_P(NODE)		\
+  (IDENTIFIER_OPNAME_P (DECL_NAME (NODE))		\
+   ? LANG_DECL_FN_CHECK (NODE)->operator_code : ERROR_MARK)
+
+/* Nonzero if NODE is an assignment operator (including += and such).  */
+#define DECL_ASSIGNMENT_OPERATOR_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->assignment_operator_p)
+
+/* For FUNCTION_DECLs: nonzero means that this function is a
+   constructor or a destructor with an extra in-charge parameter to
+   control whether or not virtual bases are constructed.  */
+#define DECL_HAS_IN_CHARGE_PARM_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->has_in_charge_parm_p)
+
+/* Nonzero if DECL is a declaration of __builtin_constant_p.  */
+#define DECL_IS_BUILTIN_CONSTANT_P(NODE)		\
+ (TREE_CODE (NODE) == FUNCTION_DECL			\
+  && DECL_BUILT_IN_CLASS (NODE) == BUILT_IN_NORMAL	\
+  && DECL_FUNCTION_CODE (NODE) == BUILT_IN_CONSTANT_P)
+
+/* Nonzero for _DECL means that this decl appears in (or will appear
+   in) as a member in a RECORD_TYPE or UNION_TYPE node.  It is also for
+   detecting circularity in case members are multiply defined.  In the
+   case of a VAR_DECL, it is also used to determine how program storage
+   should be allocated.  */
+#define DECL_IN_AGGR_P(NODE) (DECL_LANG_FLAG_3 (NODE))
+
+/* Nonzero for a VAR_DECL means that the variable's initialization (if
+   any) has been processed.  (In general, DECL_INITIALIZED_P is
+   !DECL_EXTERNAL, but static data members may be initialized even if
+   not defined.)  */
+#define DECL_INITIALIZED_P(NODE) \
+   (TREE_LANG_FLAG_1 (VAR_DECL_CHECK (NODE)))
+
+/* Nonzero for a VAR_DECL iff an explicit initializer was provided
+   or a non-trivial constructor is called.  */
+#define DECL_NONTRIVIALLY_INITIALIZED_P(NODE)	\
+   (TREE_LANG_FLAG_3 (VAR_DECL_CHECK (NODE)))
+
+/* Nonzero for a VAR_DECL that was initialized with a
+   constant-expression.  */
+#define DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P(NODE) \
+  (TREE_LANG_FLAG_2 (VAR_DECL_CHECK (NODE)))
+
+/* Nonzero if the DECL was initialized in the class definition itself,
+   rather than outside the class.  This is used for both static member
+   VAR_DECLS, and FUNCTION_DECLS that are defined in the class.  */
+#define DECL_INITIALIZED_IN_CLASS_P(DECL) \
+  (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
+   ->u.base.initialized_in_class)
+
+/* Nonzero if the DECL is used in the sense of 3.2 [basic.def.odr].
+   Only available for decls with DECL_LANG_SPECIFIC.  */
+#define DECL_ODR_USED(DECL) \
+  (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
+   ->u.base.odr_used)
+
+/* Nonzero for DECL means that this decl is just a friend declaration,
+   and should not be added to the list of members for this class.  */
+#define DECL_FRIEND_P(NODE) \
+  (DECL_LANG_SPECIFIC (TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK (NODE)) \
+   ->u.base.friend_attr)
+
+/* A TREE_LIST of the types which have befriended this FUNCTION_DECL.  */
+#define DECL_BEFRIENDING_CLASSES(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
+
+/* Nonzero for FUNCTION_DECL means that this decl is a static
+   member function.  */
+#define DECL_STATIC_FUNCTION_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->static_function)
+
+/* Nonzero for FUNCTION_DECL means that this decl is a non-static
+   member function.  */
+#define DECL_NONSTATIC_MEMBER_FUNCTION_P(NODE) \
+  (TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE)
+
+/* Nonzero for FUNCTION_DECL means that this decl is a member function
+   (static or non-static).  */
+#define DECL_FUNCTION_MEMBER_P(NODE) \
+  (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) || DECL_STATIC_FUNCTION_P (NODE))
+
+/* Nonzero for FUNCTION_DECL means that this member function
+   has `this' as const X *const.  */
+#define DECL_CONST_MEMFUNC_P(NODE)					 \
+  (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE)				 \
+   && CP_TYPE_CONST_P (TREE_TYPE (TREE_VALUE				 \
+				  (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
+
+/* Nonzero for FUNCTION_DECL means that this member function
+   has `this' as volatile X *const.  */
+#define DECL_VOLATILE_MEMFUNC_P(NODE)					 \
+  (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE)				 \
+   && CP_TYPE_VOLATILE_P (TREE_TYPE (TREE_VALUE				 \
+				  (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
+
+/* Nonzero for a DECL means that this member is a non-static member.  */
+#define DECL_NONSTATIC_MEMBER_P(NODE)		\
+  (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE)	\
+   || TREE_CODE (NODE) == FIELD_DECL)
+
+/* Nonzero for _DECL means that this member object type
+   is mutable.  */
+#define DECL_MUTABLE_P(NODE) (DECL_LANG_FLAG_0 (NODE))
+
+/* Nonzero for _DECL means that this constructor or conversion function is
+   non-converting.  */
+#define DECL_NONCONVERTING_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->nonconverting)
+
+/* Nonzero for FUNCTION_DECL means that this member function is a pure
+   virtual function.  */
+#define DECL_PURE_VIRTUAL_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->pure_virtual)
+
+/* True (in a FUNCTION_DECL) if NODE is a virtual function that is an
+   invalid overrider for a function from a base class.  Once we have
+   complained about an invalid overrider we avoid complaining about it
+   again.  */
+#define DECL_INVALID_OVERRIDER_P(NODE) \
+  (DECL_LANG_FLAG_4 (NODE))
+
+/* True (in a FUNCTION_DECL) if NODE is a function declared with
+   an override virt-specifier */
+#define DECL_OVERRIDE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
+
+/* The thunks associated with NODE, a FUNCTION_DECL.  */
+#define DECL_THUNKS(NODE) \
+  (DECL_VIRTUAL_P (NODE) ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
+
+/* Set DECL_THUNKS.  */
+#define SET_DECL_THUNKS(NODE,THUNKS) \
+  (LANG_DECL_FN_CHECK (NODE)->context = (THUNKS))
+
+/* If NODE, a FUNCTION_DECL, is a C++11 inheriting constructor, then this
+   is the base it inherits from.  */
+#define DECL_INHERITED_CTOR_BASE(NODE) \
+  (DECL_CONSTRUCTOR_P (NODE) ? LANG_DECL_FN_CHECK (NODE)->context : NULL_TREE)
+
+/* Set the inherited base.  */
+#define SET_DECL_INHERITED_CTOR_BASE(NODE,INH) \
+  (LANG_DECL_FN_CHECK (NODE)->context = (INH))
+
+/* Nonzero if NODE is a thunk, rather than an ordinary function.  */
+#define DECL_THUNK_P(NODE)			\
+  (TREE_CODE (NODE) == FUNCTION_DECL		\
+   && DECL_LANG_SPECIFIC (NODE)			\
+   && LANG_DECL_FN_CHECK (NODE)->thunk_p)
+
+/* Set DECL_THUNK_P for node.  */
+#define SET_DECL_THUNK_P(NODE, THIS_ADJUSTING)			\
+  (LANG_DECL_FN_CHECK (NODE)->thunk_p = 1,			\
+   LANG_DECL_FN_CHECK (NODE)->this_thunk_p = (THIS_ADJUSTING))
+
+/* Nonzero if NODE is a this pointer adjusting thunk.  */
+#define DECL_THIS_THUNK_P(NODE)			\
+  (DECL_THUNK_P (NODE) && LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
+
+/* Nonzero if NODE is a result pointer adjusting thunk.  */
+#define DECL_RESULT_THUNK_P(NODE)			\
+  (DECL_THUNK_P (NODE) && !LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
+
+/* Nonzero if NODE is a FUNCTION_DECL, but not a thunk.  */
+#define DECL_NON_THUNK_FUNCTION_P(NODE)				\
+  (TREE_CODE (NODE) == FUNCTION_DECL && !DECL_THUNK_P (NODE))
+
+/* Nonzero if NODE is `extern "C"'.  */
+#define DECL_EXTERN_C_P(NODE) \
+  (DECL_LANGUAGE (NODE) == lang_c)
+
+/* Nonzero if NODE is an `extern "C"' function.  */
+#define DECL_EXTERN_C_FUNCTION_P(NODE) \
+  (DECL_NON_THUNK_FUNCTION_P (NODE) && DECL_EXTERN_C_P (NODE))
+
+/* True iff DECL is an entity with vague linkage whose definition is
+   available in this translation unit.  */
+#define DECL_REPO_AVAILABLE_P(NODE) \
+  (DECL_LANG_SPECIFIC (NODE)->u.base.repo_available_p)
+
+/* True if DECL is declared 'constexpr'.  */
+#define DECL_DECLARED_CONSTEXPR_P(DECL) \
+  DECL_LANG_FLAG_8 (VAR_OR_FUNCTION_DECL_CHECK (STRIP_TEMPLATE (DECL)))
+
+/* Nonzero if this DECL is the __PRETTY_FUNCTION__ variable in a
+   template function.  */
+#define DECL_PRETTY_FUNCTION_P(NODE) \
+  (DECL_NAME (NODE) \
+   && !strcmp (IDENTIFIER_POINTER (DECL_NAME (NODE)), "__PRETTY_FUNCTION__"))
+
+/* Nonzero if the thread-local variable was declared with __thread
+   as opposed to thread_local.  */
+#define DECL_GNU_TLS_P(NODE) \
+  (TREE_LANG_FLAG_0 (VAR_DECL_CHECK (NODE)))
+
+/* The _TYPE context in which this _DECL appears.  This field holds the
+   class where a virtual function instance is actually defined.  */
+#define DECL_CLASS_CONTEXT(NODE) \
+  (DECL_CLASS_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : NULL_TREE)
+
+/* For a non-member friend function, the class (if any) in which this
+   friend was defined.  For example, given:
+
+     struct S { friend void f (); };
+
+   the DECL_FRIEND_CONTEXT for `f' will be `S'.  */
+#define DECL_FRIEND_CONTEXT(NODE)				\
+  ((DECL_DECLARES_FUNCTION_P (NODE)				\
+    && DECL_FRIEND_P (NODE) && !DECL_FUNCTION_MEMBER_P (NODE))	\
+   ? LANG_DECL_FN_CHECK (NODE)->context				\
+   : NULL_TREE)
+
+/* Set the DECL_FRIEND_CONTEXT for NODE to CONTEXT.  */
+#define SET_DECL_FRIEND_CONTEXT(NODE, CONTEXT) \
+  (LANG_DECL_FN_CHECK (NODE)->context = (CONTEXT))
+
+#define CP_DECL_CONTEXT(NODE) \
+  (!DECL_FILE_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : global_namespace)
+#define CP_TYPE_CONTEXT(NODE) \
+  (!TYPE_FILE_SCOPE_P (NODE) ? TYPE_CONTEXT (NODE) : global_namespace)
+#define FROB_CONTEXT(NODE) \
+  ((NODE) == global_namespace ? DECL_CONTEXT (NODE) : (NODE))
+
+/* 1 iff NODE has namespace scope, including the global namespace.  */
+#define DECL_NAMESPACE_SCOPE_P(NODE)				\
+  (!DECL_TEMPLATE_PARM_P (NODE)					\
+   && TREE_CODE (CP_DECL_CONTEXT (NODE)) == NAMESPACE_DECL)
+
+#define TYPE_NAMESPACE_SCOPE_P(NODE) \
+  (TREE_CODE (CP_TYPE_CONTEXT (NODE)) == NAMESPACE_DECL)
+
+#define NAMESPACE_SCOPE_P(NODE) \
+  ((DECL_P (NODE) && DECL_NAMESPACE_SCOPE_P (NODE)) \
+   || (TYPE_P (NODE) && TYPE_NAMESPACE_SCOPE_P (NODE)))
+
+/* 1 iff NODE is a class member.  */
+#define DECL_CLASS_SCOPE_P(NODE) \
+  (DECL_CONTEXT (NODE) && TYPE_P (DECL_CONTEXT (NODE)))
+
+#define TYPE_CLASS_SCOPE_P(NODE) \
+  (TYPE_CONTEXT (NODE) && TYPE_P (TYPE_CONTEXT (NODE)))
+
+/* 1 iff NODE is function-local.  */
+#define DECL_FUNCTION_SCOPE_P(NODE) \
+  (DECL_CONTEXT (NODE) \
+   && TREE_CODE (DECL_CONTEXT (NODE)) == FUNCTION_DECL)
+
+#define TYPE_FUNCTION_SCOPE_P(NODE) \
+  (TYPE_CONTEXT (NODE) && TREE_CODE (TYPE_CONTEXT (NODE)) == FUNCTION_DECL)
+
+/* 1 iff VAR_DECL node NODE is a type-info decl.  This flag is set for
+   both the primary typeinfo object and the associated NTBS name.  */
+#define DECL_TINFO_P(NODE) TREE_LANG_FLAG_4 (VAR_DECL_CHECK (NODE))
+
+/* 1 iff VAR_DECL node NODE is virtual table or VTT.  */
+#define DECL_VTABLE_OR_VTT_P(NODE) TREE_LANG_FLAG_5 (VAR_DECL_CHECK (NODE))
+
+/* 1 iff FUNCTION_TYPE or METHOD_TYPE has a ref-qualifier (either & or &&). */
+#define FUNCTION_REF_QUALIFIED(NODE) \
+  TREE_LANG_FLAG_4 (FUNC_OR_METHOD_CHECK (NODE))
+
+/* 1 iff FUNCTION_TYPE or METHOD_TYPE has &&-ref-qualifier.  */
+#define FUNCTION_RVALUE_QUALIFIED(NODE) \
+  TREE_LANG_FLAG_5 (FUNC_OR_METHOD_CHECK (NODE))
+
+/* Returns 1 iff VAR_DECL is a construction virtual table.
+   DECL_VTABLE_OR_VTT_P will be true in this case and must be checked
+   before using this macro.  */
+#define DECL_CONSTRUCTION_VTABLE_P(NODE) \
+  TREE_LANG_FLAG_6 (VAR_DECL_CHECK (NODE))
+
+/* 1 iff NODE is function-local, but for types.  */
+#define LOCAL_CLASS_P(NODE)				\
+  (decl_function_context (TYPE_MAIN_DECL (NODE)) != NULL_TREE)
+
+/* For a NAMESPACE_DECL: the list of using namespace directives
+   The PURPOSE is the used namespace, the value is the namespace
+   that is the common ancestor.  */
+#define DECL_NAMESPACE_USING(NODE) DECL_VINDEX (NAMESPACE_DECL_CHECK (NODE))
+
+/* In a NAMESPACE_DECL, the DECL_INITIAL is used to record all users
+   of a namespace, to record the transitive closure of using namespace.  */
+#define DECL_NAMESPACE_USERS(NODE) DECL_INITIAL (NAMESPACE_DECL_CHECK (NODE))
+
+/* In a NAMESPACE_DECL, the list of namespaces which have associated
+   themselves with this one.  */
+#define DECL_NAMESPACE_ASSOCIATIONS(NODE) \
+  (NAMESPACE_DECL_CHECK (NODE)->decl_non_common.saved_tree)
+
+/* In a NAMESPACE_DECL, points to the original namespace if this is
+   a namespace alias.  */
+#define DECL_NAMESPACE_ALIAS(NODE) \
+	DECL_ABSTRACT_ORIGIN (NAMESPACE_DECL_CHECK (NODE))
+#define ORIGINAL_NAMESPACE(NODE)  \
+  (DECL_NAMESPACE_ALIAS (NODE) ? DECL_NAMESPACE_ALIAS (NODE) : (NODE))
+
+/* Nonzero if NODE is the std namespace.  */
+#define DECL_NAMESPACE_STD_P(NODE)			\
+  (TREE_CODE (NODE) == NAMESPACE_DECL			\
+   && CP_DECL_CONTEXT (NODE) == global_namespace	\
+   && DECL_NAME (NODE) == std_identifier)
+
+/* In a TREE_LIST concatenating using directives, indicate indirect
+   directives  */
+#define TREE_INDIRECT_USING(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
+
+/* In a TREE_LIST in an attribute list, indicates that the attribute
+   must be applied at instantiation time.  */
+#define ATTR_IS_DEPENDENT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
+
+/* In a TREE_LIST in the argument of attribute abi_tag, indicates that the tag
+   was inherited from a template parameter, not explicitly indicated.  */
+#define ABI_TAG_IMPLICIT(NODE) TREE_LANG_FLAG_0 (TREE_LIST_CHECK (NODE))
+
+extern tree decl_shadowed_for_var_lookup (tree);
+extern void decl_shadowed_for_var_insert (tree, tree);
+
+/* Non zero if this is a using decl for a dependent scope. */
+#define DECL_DEPENDENT_P(NODE) DECL_LANG_FLAG_0 (USING_DECL_CHECK (NODE))
+
+/* The scope named in a using decl.  */
+#define USING_DECL_SCOPE(NODE) TREE_TYPE (USING_DECL_CHECK (NODE))
+
+/* The decls named by a using decl.  */
+#define USING_DECL_DECLS(NODE) DECL_INITIAL (USING_DECL_CHECK (NODE))
+
+/* Non zero if the using decl refers to a dependent type.  */
+#define USING_DECL_TYPENAME_P(NODE) DECL_LANG_FLAG_1 (USING_DECL_CHECK (NODE))
+
+/* In a VAR_DECL, true if we have a shadowed local variable
+   in the shadowed var table for this VAR_DECL.  */
+#define DECL_HAS_SHADOWED_FOR_VAR_P(NODE) \
+  (VAR_DECL_CHECK (NODE)->decl_with_vis.shadowed_for_var_p)
+
+/* In a VAR_DECL for a variable declared in a for statement,
+   this is the shadowed (local) variable.  */
+#define DECL_SHADOWED_FOR_VAR(NODE) \
+  (DECL_HAS_SHADOWED_FOR_VAR_P(NODE) ? decl_shadowed_for_var_lookup (NODE) : NULL)
+
+#define SET_DECL_SHADOWED_FOR_VAR(NODE, VAL) \
+  (decl_shadowed_for_var_insert (NODE, VAL))
+
+/* In a FUNCTION_DECL, this is nonzero if this function was defined in
+   the class definition.  We have saved away the text of the function,
+   but have not yet processed it.  */
+#define DECL_PENDING_INLINE_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->pending_inline_p)
+
+/* If DECL_PENDING_INLINE_P holds, this is the saved text of the
+   function.  */
+#define DECL_PENDING_INLINE_INFO(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->u.pending_inline_info)
+
+/* Nonzero for TYPE_DECL means that it was written 'using name = type'.  */
+#define TYPE_DECL_ALIAS_P(NODE) \
+  DECL_LANG_FLAG_6 (TYPE_DECL_CHECK (NODE))
+
+/* Nonzero for a type which is an alias for another type; i.e, a type
+   which declaration was written 'using name-of-type =
+   another-type'.  */
+#define TYPE_ALIAS_P(NODE)			\
+  (TYPE_P (NODE)				\
+   && TYPE_NAME (NODE)				\
+   && TREE_CODE (TYPE_NAME (NODE)) == TYPE_DECL	\
+   && TYPE_DECL_ALIAS_P (TYPE_NAME (NODE)))
+
+/* For a class type: if this structure has many fields, we'll sort them
+   and put them into a TREE_VEC.  */
+#define CLASSTYPE_SORTED_FIELDS(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->sorted_fields)
+
+/* If non-NULL for a VAR_DECL, FUNCTION_DECL, TYPE_DECL or
+   TEMPLATE_DECL, the entity is either a template specialization (if
+   DECL_USE_TEMPLATE is nonzero) or the abstract instance of the
+   template itself.
+
+   In either case, DECL_TEMPLATE_INFO is a TREE_LIST, whose
+   TREE_PURPOSE is the TEMPLATE_DECL of which this entity is a
+   specialization or abstract instance.  The TREE_VALUE is the
+   template arguments used to specialize the template.
+   
+   Consider:
+
+      template <typename T> struct S { friend void f(T) {} };
+
+   In this case, S<int>::f is, from the point of view of the compiler,
+   an instantiation of a template -- but, from the point of view of
+   the language, each instantiation of S results in a wholly unrelated
+   global function f.  In this case, DECL_TEMPLATE_INFO for S<int>::f
+   will be non-NULL, but DECL_USE_TEMPLATE will be zero.  */
+#define DECL_TEMPLATE_INFO(NODE) \
+  (DECL_LANG_SPECIFIC (VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK (NODE)) \
+   ->u.min.template_info)
+
+/* For a VAR_DECL, indicates that the variable is actually a
+   non-static data member of anonymous union that has been promoted to
+   variable status.  */
+#define DECL_ANON_UNION_VAR_P(NODE) \
+  (DECL_LANG_FLAG_4 (VAR_DECL_CHECK (NODE)))
+
+/* Template information for a RECORD_TYPE or UNION_TYPE.  */
+#define CLASSTYPE_TEMPLATE_INFO(NODE) \
+  (LANG_TYPE_CLASS_CHECK (RECORD_OR_UNION_CHECK (NODE))->template_info)
+
+/* Template information for an ENUMERAL_TYPE.  Although an enumeration may
+   not be a primary template, it may be declared within the scope of a
+   primary template and the enumeration constants may depend on
+   non-type template parameters.  */
+#define ENUM_TEMPLATE_INFO(NODE) \
+  (TYPE_LANG_SLOT_1 (ENUMERAL_TYPE_CHECK (NODE)))
+
+/* Template information for a template template parameter.  */
+#define TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO(NODE) \
+  (LANG_TYPE_CLASS_CHECK (BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK (NODE)) \
+   ->template_info)
+
+/* Template information for an ENUMERAL_, RECORD_, UNION_TYPE, or
+   BOUND_TEMPLATE_TEMPLATE_PARM type.  Note that if NODE is a
+   specialization of an alias template, this accessor returns the
+   template info for the alias template, not the one (if any) for the
+   template of the underlying type.  */
+#define TYPE_TEMPLATE_INFO(NODE)					\
+  ((TYPE_ALIAS_P (NODE) && DECL_LANG_SPECIFIC (TYPE_NAME (NODE)))	\
+   ? (DECL_LANG_SPECIFIC (TYPE_NAME (NODE))				\
+      ? DECL_TEMPLATE_INFO (TYPE_NAME (NODE))				\
+      : NULL_TREE)							\
+   : ((TREE_CODE (NODE) == ENUMERAL_TYPE)				\
+      ? ENUM_TEMPLATE_INFO (NODE)					\
+      : ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM)		\
+	 ? TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (NODE)			\
+	 : (CLASS_TYPE_P (NODE)						\
+	    ? CLASSTYPE_TEMPLATE_INFO (NODE)				\
+	    : NULL_TREE))))
+
+
+/* Set the template information for an ENUMERAL_, RECORD_, or
+   UNION_TYPE to VAL.  */
+#define SET_TYPE_TEMPLATE_INFO(NODE, VAL)				\
+  (TREE_CODE (NODE) == ENUMERAL_TYPE					\
+   ? (ENUM_TEMPLATE_INFO (NODE) = (VAL))				\
+   : ((CLASS_TYPE_P (NODE) && !TYPE_ALIAS_P (NODE))			\
+      ? (CLASSTYPE_TEMPLATE_INFO (NODE) = (VAL))			\
+      : (DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) = (VAL))))
+
+#define TI_TEMPLATE(NODE) TREE_TYPE (TEMPLATE_INFO_CHECK (NODE))
+#define TI_ARGS(NODE) TREE_CHAIN (TEMPLATE_INFO_CHECK (NODE))
+#define TI_PENDING_TEMPLATE_FLAG(NODE) TREE_LANG_FLAG_1 (NODE)
+/* For a given TREE_VEC containing a template argument list,
+   this property contains the number of arguments that are not
+   defaulted.  */
+#define NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) TREE_CHAIN (TREE_VEC_CHECK (NODE))
+/* Below are the setter and getter of the NON_DEFAULT_TEMPLATE_ARGS_COUNT
+   property.  */
+#define SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE, INT_VALUE) \
+  NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) = build_int_cst (NULL_TREE, INT_VALUE)
+#ifdef ENABLE_CHECKING
+#define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
+    int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE))
+#else
+#define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
+  NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE) \
+  ? int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE)) \
+  : TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (NODE))
+#endif
+/* The list of typedefs - used in the template - that need
+   access checking at template instantiation time.
+
+   FIXME this should be associated with the TEMPLATE_DECL, not the
+   TEMPLATE_INFO.  */
+#define TI_TYPEDEFS_NEEDING_ACCESS_CHECKING(NODE) \
+  ((struct tree_template_info*)TEMPLATE_INFO_CHECK \
+     (NODE))->typedefs_needing_access_checking
+
+/* We use TREE_VECs to hold template arguments.  If there is only one
+   level of template arguments, then the TREE_VEC contains the
+   arguments directly.  If there is more than one level of template
+   arguments, then each entry in the TREE_VEC is itself a TREE_VEC,
+   containing the template arguments for a single level.  The first
+   entry in the outer TREE_VEC is the outermost level of template
+   parameters; the last is the innermost.
+
+   It is incorrect to ever form a template argument vector containing
+   only one level of arguments, but which is a TREE_VEC containing as
+   its only entry the TREE_VEC for that level.
+
+   For each TREE_VEC containing the template arguments for a single
+   level, it's possible to get or set the number of non defaulted
+   template arguments by using the accessor macros
+   GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT or
+   SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT.  */
+
+/* Nonzero if the template arguments is actually a vector of vectors,
+   rather than just a vector.  */
+#define TMPL_ARGS_HAVE_MULTIPLE_LEVELS(NODE)		     \
+  (NODE && TREE_VEC_LENGTH (NODE) && TREE_VEC_ELT (NODE, 0)  \
+   && TREE_CODE (TREE_VEC_ELT (NODE, 0)) == TREE_VEC)
+
+/* The depth of a template argument vector.  When called directly by
+   the parser, we use a TREE_LIST rather than a TREE_VEC to represent
+   template arguments.  In fact, we may even see NULL_TREE if there
+   are no template arguments.  In both of those cases, there is only
+   one level of template arguments.  */
+#define TMPL_ARGS_DEPTH(NODE)					\
+  (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (NODE) ? TREE_VEC_LENGTH (NODE) : 1)
+
+/* The LEVELth level of the template ARGS.  The outermost level of
+   args is level 1, not level 0.  */
+#define TMPL_ARGS_LEVEL(ARGS, LEVEL)		\
+  (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (ARGS)	\
+   ? TREE_VEC_ELT (ARGS, (LEVEL) - 1) : (ARGS))
+
+/* Set the LEVELth level of the template ARGS to VAL.  This macro does
+   not work with single-level argument vectors.  */
+#define SET_TMPL_ARGS_LEVEL(ARGS, LEVEL, VAL)	\
+  (TREE_VEC_ELT (ARGS, (LEVEL) - 1) = (VAL))
+
+/* Accesses the IDXth parameter in the LEVELth level of the ARGS.  */
+#define TMPL_ARG(ARGS, LEVEL, IDX)				\
+  (TREE_VEC_ELT (TMPL_ARGS_LEVEL (ARGS, LEVEL), IDX))
+
+/* Given a single level of template arguments in NODE, return the
+   number of arguments.  */
+#define NUM_TMPL_ARGS(NODE)				\
+  (TREE_VEC_LENGTH (NODE))
+
+/* Returns the innermost level of template arguments in ARGS.  */
+#define INNERMOST_TEMPLATE_ARGS(NODE) \
+  (get_innermost_template_args ((NODE), 1))
+
+/* The number of levels of template parameters given by NODE.  */
+#define TMPL_PARMS_DEPTH(NODE) \
+  ((HOST_WIDE_INT) TREE_INT_CST_LOW (TREE_PURPOSE (NODE)))
+
+/* The TEMPLATE_DECL instantiated or specialized by NODE.  This
+   TEMPLATE_DECL will be the immediate parent, not the most general
+   template.  For example, in:
+
+      template <class T> struct S { template <class U> void f(U); }
+
+   the FUNCTION_DECL for S<int>::f<double> will have, as its
+   DECL_TI_TEMPLATE, `template <class U> S<int>::f<U>'.
+
+   As a special case, for a member friend template of a template
+   class, this value will not be a TEMPLATE_DECL, but rather an
+   IDENTIFIER_NODE or OVERLOAD indicating the name of the template and
+   any explicit template arguments provided.  For example, in:
+
+     template <class T> struct S { friend void f<int>(int, double); }
+
+   the DECL_TI_TEMPLATE will be an IDENTIFIER_NODE for `f' and the
+   DECL_TI_ARGS will be {int}.
+
+   For a FIELD_DECL with a non-static data member initializer, this value
+   is the FIELD_DECL it was instantiated from.  */
+#define DECL_TI_TEMPLATE(NODE)      TI_TEMPLATE (DECL_TEMPLATE_INFO (NODE))
+
+/* The template arguments used to obtain this decl from the most
+   general form of DECL_TI_TEMPLATE.  For the example given for
+   DECL_TI_TEMPLATE, the DECL_TI_ARGS will be {int, double}.  These
+   are always the full set of arguments required to instantiate this
+   declaration from the most general template specialized here.  */
+#define DECL_TI_ARGS(NODE)	    TI_ARGS (DECL_TEMPLATE_INFO (NODE))
+
+/* The TEMPLATE_DECL associated with NODE, a class type.  Even if NODE
+   will be generated from a partial specialization, the TEMPLATE_DECL
+   referred to here will be the original template.  For example,
+   given:
+
+      template <typename T> struct S {};
+      template <typename T> struct S<T*> {};
+      
+   the CLASSTPYE_TI_TEMPLATE for S<int*> will be S, not the S<T*>.  */
+#define CLASSTYPE_TI_TEMPLATE(NODE) TI_TEMPLATE (CLASSTYPE_TEMPLATE_INFO (NODE))
+#define CLASSTYPE_TI_ARGS(NODE)     TI_ARGS (CLASSTYPE_TEMPLATE_INFO (NODE))
+
+/* For a template instantiation TYPE, returns the TYPE corresponding
+   to the primary template.  Otherwise returns TYPE itself.  */
+#define CLASSTYPE_PRIMARY_TEMPLATE_TYPE(TYPE)				\
+  ((CLASSTYPE_USE_TEMPLATE ((TYPE))					\
+    && !CLASSTYPE_TEMPLATE_SPECIALIZATION ((TYPE)))			\
+   ? TREE_TYPE (DECL_TEMPLATE_RESULT (DECL_PRIMARY_TEMPLATE		\
+				      (CLASSTYPE_TI_TEMPLATE ((TYPE))))) \
+   : (TYPE))
+
+/* Like CLASS_TI_TEMPLATE, but also works for ENUMERAL_TYPEs.  */
+#define TYPE_TI_TEMPLATE(NODE)			\
+  (TI_TEMPLATE (TYPE_TEMPLATE_INFO (NODE)))
+
+/* Like DECL_TI_ARGS, but for an ENUMERAL_, RECORD_, or UNION_TYPE.  */
+#define TYPE_TI_ARGS(NODE)			\
+  (TI_ARGS (TYPE_TEMPLATE_INFO (NODE)))
+
+#define INNERMOST_TEMPLATE_PARMS(NODE)  TREE_VALUE (NODE)
+
+/* Nonzero if NODE (a TEMPLATE_DECL) is a member template, in the
+   sense of [temp.mem].  */
+#define DECL_MEMBER_TEMPLATE_P(NODE) \
+  (DECL_LANG_FLAG_1 (TEMPLATE_DECL_CHECK (NODE)))
+
+/* Nonzero if the NODE corresponds to the template parameters for a
+   member template, whose inline definition is being processed after
+   the class definition is complete.  */
+#define TEMPLATE_PARMS_FOR_INLINE(NODE) TREE_LANG_FLAG_1 (NODE)
+
+/* Determine if a declaration (PARM_DECL or FIELD_DECL) is a pack.  */
+#define DECL_PACK_P(NODE) \
+  (DECL_P (NODE) && PACK_EXPANSION_P (TREE_TYPE (NODE)))
+
+/* Determines if NODE is an expansion of one or more parameter packs,
+   e.g., a TYPE_PACK_EXPANSION or EXPR_PACK_EXPANSION.  */
+#define PACK_EXPANSION_P(NODE)                 \
+  (TREE_CODE (NODE) == TYPE_PACK_EXPANSION     \
+   || TREE_CODE (NODE) == EXPR_PACK_EXPANSION)
+
+/* Extracts the type or expression pattern from a TYPE_PACK_EXPANSION or
+   EXPR_PACK_EXPANSION.  */
+#define PACK_EXPANSION_PATTERN(NODE)                            \
+  (TREE_CODE (NODE) == TYPE_PACK_EXPANSION? TREE_TYPE (NODE)    \
+   : TREE_OPERAND (NODE, 0))
+
+/* Sets the type or expression pattern for a TYPE_PACK_EXPANSION or
+   EXPR_PACK_EXPANSION.  */
+#define SET_PACK_EXPANSION_PATTERN(NODE,VALUE)  \
+  if (TREE_CODE (NODE) == TYPE_PACK_EXPANSION)  \
+    TREE_TYPE (NODE) = VALUE;                   \
+  else                                          \
+    TREE_OPERAND (NODE, 0) = VALUE
+
+/* The list of parameter packs used in the PACK_EXPANSION_* node. The
+   TREE_VALUE of each TREE_LIST contains the parameter packs.  */
+#define PACK_EXPANSION_PARAMETER_PACKS(NODE)		\
+  *(TREE_CODE (NODE) == EXPR_PACK_EXPANSION		\
+    ? &TREE_OPERAND (NODE, 1)				\
+    : &TYPE_MINVAL (TYPE_PACK_EXPANSION_CHECK (NODE)))
+
+/* Any additional template args to be applied when substituting into
+   the pattern, set by tsubst_pack_expansion for partial instantiations.  */
+#define PACK_EXPANSION_EXTRA_ARGS(NODE)		\
+  *(TREE_CODE (NODE) == TYPE_PACK_EXPANSION	\
+    ? &TYPE_MAXVAL (NODE)			\
+    : &TREE_OPERAND ((NODE), 2))
+
+/* True iff this pack expansion is within a function context.  */
+#define PACK_EXPANSION_LOCAL_P(NODE) TREE_LANG_FLAG_0 (NODE)
+
+/* Determine if this is an argument pack.  */
+#define ARGUMENT_PACK_P(NODE)                          \
+  (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK              \
+   || TREE_CODE (NODE) == NONTYPE_ARGUMENT_PACK)
+
+/* The arguments stored in an argument pack. Arguments are stored in a
+   TREE_VEC, which may have length zero.  */
+#define ARGUMENT_PACK_ARGS(NODE)                               \
+  (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK? TREE_TYPE (NODE)    \
+   : TREE_OPERAND (NODE, 0))
+
+/* Set the arguments stored in an argument pack. VALUE must be a
+   TREE_VEC.  */
+#define SET_ARGUMENT_PACK_ARGS(NODE,VALUE)     \
+  if (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK)  \
+    TREE_TYPE (NODE) = VALUE;                           \
+  else                                                  \
+    TREE_OPERAND (NODE, 0) = VALUE
+
+/* Whether the argument pack is "incomplete", meaning that more
+   arguments can still be deduced. Incomplete argument packs are only
+   used when the user has provided an explicit template argument list
+   for a variadic function template. Some of the explicit template
+   arguments will be placed into the beginning of the argument pack,
+   but additional arguments might still be deduced.  */
+#define ARGUMENT_PACK_INCOMPLETE_P(NODE)        \
+  TREE_ADDRESSABLE (ARGUMENT_PACK_ARGS (NODE))
+
+/* When ARGUMENT_PACK_INCOMPLETE_P, stores the explicit template
+   arguments used to fill this pack.  */
+#define ARGUMENT_PACK_EXPLICIT_ARGS(NODE)       \
+  TREE_TYPE (ARGUMENT_PACK_ARGS (NODE))
+
+/* In an ARGUMENT_PACK_SELECT, the argument pack from which an
+   argument will be selected.  */
+#define ARGUMENT_PACK_SELECT_FROM_PACK(NODE)				\
+  (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->argument_pack)
+
+/* In an ARGUMENT_PACK_SELECT, the index of the argument we want to
+   select.  */
+#define ARGUMENT_PACK_SELECT_INDEX(NODE)				\
+  (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->index)
+  
+/* In an ARGUMENT_PACK_SELECT, the actual underlying argument that the
+   ARGUMENT_PACK_SELECT represents. */
+#define ARGUMENT_PACK_SELECT_ARG(NODE)					\
+  TREE_VEC_ELT (ARGUMENT_PACK_ARGS (ARGUMENT_PACK_SELECT_FROM_PACK (NODE)), \
+	        ARGUMENT_PACK_SELECT_INDEX (NODE));
+
+/* In a FUNCTION_DECL, the saved language-specific per-function data.  */
+#define DECL_SAVED_FUNCTION_DATA(NODE)			\
+  (LANG_DECL_FN_CHECK (FUNCTION_DECL_CHECK (NODE))	\
+   ->u.saved_language_function)
+
+/* True if NODE is an implicit INDIRECT_EXPR from convert_from_reference.  */
+#define REFERENCE_REF_P(NODE)				\
+  (INDIRECT_REF_P (NODE)				\
+   && TREE_TYPE (TREE_OPERAND (NODE, 0))		\
+   && (TREE_CODE (TREE_TYPE (TREE_OPERAND ((NODE), 0)))	\
+       == REFERENCE_TYPE))
+
+/* True if NODE is a REFERENCE_TYPE which is OK to instantiate to be a
+   reference to VLA type, because it's used for VLA capture.  */
+#define REFERENCE_VLA_OK(NODE) \
+  (TYPE_LANG_FLAG_5 (REFERENCE_TYPE_CHECK (NODE)))
+
+#define NEW_EXPR_USE_GLOBAL(NODE) \
+  TREE_LANG_FLAG_0 (NEW_EXPR_CHECK (NODE))
+#define DELETE_EXPR_USE_GLOBAL(NODE) \
+  TREE_LANG_FLAG_0 (DELETE_EXPR_CHECK (NODE))
+#define DELETE_EXPR_USE_VEC(NODE) \
+  TREE_LANG_FLAG_1 (DELETE_EXPR_CHECK (NODE))
+
+/* Indicates that this is a non-dependent COMPOUND_EXPR which will
+   resolve to a function call.  */
+#define COMPOUND_EXPR_OVERLOADED(NODE) \
+  TREE_LANG_FLAG_0 (COMPOUND_EXPR_CHECK (NODE))
+
+/* In a CALL_EXPR appearing in a template, true if Koenig lookup
+   should be performed at instantiation time.  */
+#define KOENIG_LOOKUP_P(NODE) TREE_LANG_FLAG_0 (CALL_EXPR_CHECK (NODE))
+
+/* Indicates whether a string literal has been parenthesized. Such
+   usages are disallowed in certain circumstances.  */
+
+#define PAREN_STRING_LITERAL_P(NODE) \
+  TREE_LANG_FLAG_0 (STRING_CST_CHECK (NODE))
+
+/* Indicates whether a COMPONENT_REF has been parenthesized.  Currently
+   only set some of the time in C++14 mode.  */
+
+#define REF_PARENTHESIZED_P(NODE) \
+  TREE_LANG_FLAG_2 (COMPONENT_REF_CHECK (NODE))
+
+/* Nonzero if this AGGR_INIT_EXPR provides for initialization via a
+   constructor call, rather than an ordinary function call.  */
+#define AGGR_INIT_VIA_CTOR_P(NODE) \
+  TREE_LANG_FLAG_0 (AGGR_INIT_EXPR_CHECK (NODE))
+
+/* Nonzero if expanding this AGGR_INIT_EXPR should first zero-initialize
+   the object.  */
+#define AGGR_INIT_ZERO_FIRST(NODE) \
+  TREE_LANG_FLAG_2 (AGGR_INIT_EXPR_CHECK (NODE))
+
+/* AGGR_INIT_EXPR accessors.  These are equivalent to the CALL_EXPR
+   accessors, except for AGGR_INIT_EXPR_SLOT (which takes the place of
+   CALL_EXPR_STATIC_CHAIN).  */
+
+#define AGGR_INIT_EXPR_FN(NODE) TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 1)
+#define AGGR_INIT_EXPR_SLOT(NODE) \
+  TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 2)
+#define AGGR_INIT_EXPR_ARG(NODE, I) \
+  TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), (I) + 3)
+#define aggr_init_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
+
+/* AGGR_INIT_EXPR_ARGP returns a pointer to the argument vector for NODE.
+   We can't use &AGGR_INIT_EXPR_ARG (NODE, 0) because that will complain if
+   the argument count is zero when checking is enabled.  Instead, do
+   the pointer arithmetic to advance past the 3 fixed operands in a
+   AGGR_INIT_EXPR.  That produces a valid pointer to just past the end of
+   the operand array, even if it's not valid to dereference it.  */
+#define AGGR_INIT_EXPR_ARGP(NODE) \
+  (&(TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 0)) + 3)
+
+/* Abstract iterators for AGGR_INIT_EXPRs.  */
+
+/* Structure containing iterator state.  */
+typedef struct aggr_init_expr_arg_iterator_d {
+  tree t;	/* the aggr_init_expr */
+  int n;	/* argument count */
+  int i;	/* next argument index */
+} aggr_init_expr_arg_iterator;
+
+/* Initialize the abstract argument list iterator object ITER with the
+   arguments from AGGR_INIT_EXPR node EXP.  */
+inline void
+init_aggr_init_expr_arg_iterator (tree exp,
+				       aggr_init_expr_arg_iterator *iter)
+{
+  iter->t = exp;
+  iter->n = aggr_init_expr_nargs (exp);
+  iter->i = 0;
+}
+
+/* Return the next argument from abstract argument list iterator object ITER,
+   and advance its state.  Return NULL_TREE if there are no more arguments.  */
+inline tree
+next_aggr_init_expr_arg (aggr_init_expr_arg_iterator *iter)
+{
+  tree result;
+  if (iter->i >= iter->n)
+    return NULL_TREE;
+  result = AGGR_INIT_EXPR_ARG (iter->t, iter->i);
+  iter->i++;
+  return result;
+}
+
+/* Initialize the abstract argument list iterator object ITER, then advance
+   past and return the first argument.  Useful in for expressions, e.g.
+     for (arg = first_aggr_init_expr_arg (exp, &iter); arg;
+          arg = next_aggr_init_expr_arg (&iter))   */
+inline tree
+first_aggr_init_expr_arg (tree exp, aggr_init_expr_arg_iterator *iter)
+{
+  init_aggr_init_expr_arg_iterator (exp, iter);
+  return next_aggr_init_expr_arg (iter);
+}
+
+/* Test whether there are more arguments in abstract argument list iterator
+   ITER, without changing its state.  */
+inline bool
+more_aggr_init_expr_args_p (const aggr_init_expr_arg_iterator *iter)
+{
+  return (iter->i < iter->n);
+}
+
+/* Iterate through each argument ARG of AGGR_INIT_EXPR CALL, using variable
+   ITER (of type aggr_init_expr_arg_iterator) to hold the iteration state.  */
+#define FOR_EACH_AGGR_INIT_EXPR_ARG(arg, iter, call)			\
+  for ((arg) = first_aggr_init_expr_arg ((call), &(iter)); (arg);	\
+       (arg) = next_aggr_init_expr_arg (&(iter)))
+
+/* VEC_INIT_EXPR accessors.  */
+#define VEC_INIT_EXPR_SLOT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 0)
+#define VEC_INIT_EXPR_INIT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 1)
+
+/* Indicates that a VEC_INIT_EXPR is a potential constant expression.
+   Only set when the current function is constexpr.  */
+#define VEC_INIT_EXPR_IS_CONSTEXPR(NODE) \
+  TREE_LANG_FLAG_0 (VEC_INIT_EXPR_CHECK (NODE))
+
+/* Indicates that a VEC_INIT_EXPR is expressing value-initialization.  */
+#define VEC_INIT_EXPR_VALUE_INIT(NODE) \
+  TREE_LANG_FLAG_1 (VEC_INIT_EXPR_CHECK (NODE))
+
+/* The condition under which this MUST_NOT_THROW_EXPR actually blocks
+   exceptions.  NULL_TREE means 'true'.  */
+#define MUST_NOT_THROW_COND(NODE) \
+  TREE_OPERAND (MUST_NOT_THROW_EXPR_CHECK (NODE), 1)
+
+/* The TYPE_MAIN_DECL for a class template type is a TYPE_DECL, not a
+   TEMPLATE_DECL.  This macro determines whether or not a given class
+   type is really a template type, as opposed to an instantiation or
+   specialization of one.  */
+#define CLASSTYPE_IS_TEMPLATE(NODE)  \
+  (CLASSTYPE_TEMPLATE_INFO (NODE)    \
+   && !CLASSTYPE_USE_TEMPLATE (NODE) \
+   && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
+
+/* The name used by the user to name the typename type.  Typically,
+   this is an IDENTIFIER_NODE, and the same as the DECL_NAME on the
+   corresponding TYPE_DECL.  However, this may also be a
+   TEMPLATE_ID_EXPR if we had something like `typename X::Y<T>'.  */
+#define TYPENAME_TYPE_FULLNAME(NODE) \
+  (TYPE_VALUES_RAW (TYPENAME_TYPE_CHECK (NODE)))
+
+/* True if a TYPENAME_TYPE was declared as an "enum".  */
+#define TYPENAME_IS_ENUM_P(NODE) \
+  (TREE_LANG_FLAG_0 (TYPENAME_TYPE_CHECK (NODE)))
+
+/* True if a TYPENAME_TYPE was declared as a "class", "struct", or
+   "union".  */
+#define TYPENAME_IS_CLASS_P(NODE) \
+  (TREE_LANG_FLAG_1 (TYPENAME_TYPE_CHECK (NODE)))
+
+/* True if a TYPENAME_TYPE is in the process of being resolved.  */
+#define TYPENAME_IS_RESOLVING_P(NODE) \
+  (TREE_LANG_FLAG_2 (TYPENAME_TYPE_CHECK (NODE)))
+
+/* [class.virtual]
+
+   A class that declares or inherits a virtual function is called a
+   polymorphic class.  */
+#define TYPE_POLYMORPHIC_P(NODE) (TREE_LANG_FLAG_2 (NODE))
+
+/* Nonzero if this class has a virtual function table pointer.  */
+#define TYPE_CONTAINS_VPTR_P(NODE)		\
+  (TYPE_POLYMORPHIC_P (NODE) || CLASSTYPE_VBASECLASSES (NODE))
+
+/* This flag is true of a local VAR_DECL if it was declared in a for
+   statement, but we are no longer in the scope of the for.  */
+#define DECL_DEAD_FOR_LOCAL(NODE) DECL_LANG_FLAG_7 (VAR_DECL_CHECK (NODE))
+
+/* This flag is set on a VAR_DECL that is a DECL_DEAD_FOR_LOCAL
+   if we already emitted a warning about using it.  */
+#define DECL_ERROR_REPORTED(NODE) DECL_LANG_FLAG_0 (VAR_DECL_CHECK (NODE))
+
+/* Nonzero if NODE is a FUNCTION_DECL (for a function with global
+   scope) declared in a local scope.  */
+#define DECL_LOCAL_FUNCTION_P(NODE) \
+  DECL_LANG_FLAG_0 (FUNCTION_DECL_CHECK (NODE))
+
+/* True if NODE was declared with auto in its return type, but it has
+   started compilation and so the return type might have been changed by
+   return type deduction; its declared return type should be found in
+   DECL_STRUCT_FUNCTION(NODE)->language->x_auto_return_pattern.  */
+#define FNDECL_USED_AUTO(NODE) \
+  TREE_LANG_FLAG_2 (FUNCTION_DECL_CHECK (NODE))
+
+/* Nonzero if NODE is a DECL which we know about but which has not
+   been explicitly declared, such as a built-in function or a friend
+   declared inside a class.  In the latter case DECL_HIDDEN_FRIEND_P
+   will be set.  */
+#define DECL_ANTICIPATED(NODE) \
+  (DECL_LANG_SPECIFIC (TYPE_FUNCTION_OR_TEMPLATE_DECL_CHECK (NODE)) \
+   ->u.base.anticipated_p)
+
+/* Nonzero if NODE is a FUNCTION_DECL which was declared as a friend
+   within a class but has not been declared in the surrounding scope.
+   The function is invisible except via argument dependent lookup.  */
+#define DECL_HIDDEN_FRIEND_P(NODE) \
+  (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->hidden_friend_p)
+
+/* Nonzero if NODE is an artificial FUNCTION_DECL for
+   #pragma omp declare reduction.  */
+#define DECL_OMP_DECLARE_REDUCTION_P(NODE) \
+  (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->omp_declare_reduction_p)
+
+/* Nonzero if DECL has been declared threadprivate by
+   #pragma omp threadprivate.  */
+#define CP_DECL_THREADPRIVATE_P(DECL) \
+  (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (DECL))->u.base.threadprivate_or_deleted_p)
+
+/* Nonzero if DECL was declared with '= delete'.  */
+#define DECL_DELETED_FN(DECL) \
+  (LANG_DECL_FN_CHECK (DECL)->min.base.threadprivate_or_deleted_p)
+
+/* Nonzero if DECL was declared with '= default' (maybe implicitly).  */
+#define DECL_DEFAULTED_FN(DECL) \
+  (LANG_DECL_FN_CHECK (DECL)->defaulted_p)
+
+/* Nonzero if DECL is explicitly defaulted in the class body.  */
+#define DECL_DEFAULTED_IN_CLASS_P(DECL)					\
+  (DECL_DEFAULTED_FN (DECL) && DECL_INITIALIZED_IN_CLASS_P (DECL))
+/* Nonzero if DECL was defaulted outside the class body.  */
+#define DECL_DEFAULTED_OUTSIDE_CLASS_P(DECL)				\
+  (DECL_DEFAULTED_FN (DECL)						\
+   && !(DECL_ARTIFICIAL (DECL) || DECL_INITIALIZED_IN_CLASS_P (DECL)))
+
+/* Record whether a typedef for type `int' was actually `signed int'.  */
+#define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
+
+/* Returns nonzero if DECL has external linkage, as specified by the
+   language standard.  (This predicate may hold even when the
+   corresponding entity is not actually given external linkage in the
+   object file; see decl_linkage for details.)  */
+#define DECL_EXTERNAL_LINKAGE_P(DECL) \
+  (decl_linkage (DECL) == lk_external)
+
+/* Keep these codes in ascending code order.  */
+
+#define INTEGRAL_CODE_P(CODE)	\
+  ((CODE) == ENUMERAL_TYPE	\
+   || (CODE) == BOOLEAN_TYPE	\
+   || (CODE) == INTEGER_TYPE)
+
+/* [basic.fundamental]
+
+   Types  bool, char, wchar_t, and the signed and unsigned integer types
+   are collectively called integral types.
+
+   Note that INTEGRAL_TYPE_P, as defined in tree.h, allows enumeration
+   types as well, which is incorrect in C++.  Keep these checks in
+   ascending code order.  */
+#define CP_INTEGRAL_TYPE_P(TYPE)		\
+  (TREE_CODE (TYPE) == BOOLEAN_TYPE		\
+   || TREE_CODE (TYPE) == INTEGER_TYPE)
+
+/* Returns true if TYPE is an integral or enumeration name.  Keep
+   these checks in ascending code order.  */
+#define INTEGRAL_OR_ENUMERATION_TYPE_P(TYPE) \
+   (TREE_CODE (TYPE) == ENUMERAL_TYPE || CP_INTEGRAL_TYPE_P (TYPE))
+
+/* Returns true if TYPE is an integral or unscoped enumeration type.  */
+#define INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P(TYPE) \
+   (UNSCOPED_ENUM_P (TYPE) || CP_INTEGRAL_TYPE_P (TYPE))
+
+/* True if the class type TYPE is a literal type.  */
+#define CLASSTYPE_LITERAL_P(TYPE)              \
+   (LANG_TYPE_CLASS_CHECK (TYPE)->is_literal)
+
+/* [basic.fundamental]
+
+   Integral and floating types are collectively called arithmetic
+   types.  
+
+   As a GNU extension, we also accept complex types.
+
+   Keep these checks in ascending code order.  */
+#define ARITHMETIC_TYPE_P(TYPE) \
+  (CP_INTEGRAL_TYPE_P (TYPE) \
+   || TREE_CODE (TYPE) == REAL_TYPE \
+   || TREE_CODE (TYPE) == COMPLEX_TYPE)
+
+/* True iff TYPE is cv decltype(nullptr).  */
+#define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
+
+/* [basic.types]
+
+   Arithmetic types, enumeration types, pointer types,
+   pointer-to-member types, and std::nullptr_t are collectively called
+   scalar types.
+   
+   Keep these checks in ascending code order.  */
+#define SCALAR_TYPE_P(TYPE)			\
+  (TYPE_PTRDATAMEM_P (TYPE)			\
+   || TREE_CODE (TYPE) == ENUMERAL_TYPE		\
+   || ARITHMETIC_TYPE_P (TYPE)			\
+   || TYPE_PTR_P (TYPE)				\
+   || TYPE_PTRMEMFUNC_P (TYPE)                  \
+   || NULLPTR_TYPE_P (TYPE))
+
+/* Determines whether this type is a C++0x scoped enumeration
+   type. Scoped enumerations types are introduced via "enum class" or
+   "enum struct", e.g.,
+
+     enum class Color {
+       Red, Green, Blue
+     };
+
+   Scoped enumeration types are different from normal (unscoped)
+   enumeration types in several ways:
+   
+     - The enumerators of a scoped enumeration type are only available
+       within the scope of the enumeration type and not in the
+       enclosing scope. For example, the Red color can be referred to
+       with "Color::Red" but not "Red".
+
+     - Scoped enumerators and enumerations do not implicitly convert
+       to integers or 'bool'.
+
+     - The underlying type of the enum is well-defined.  */
+#define SCOPED_ENUM_P(TYPE)                                             \
+  (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_SCOPED (TYPE))
+
+/* Determine whether this is an unscoped enumeration type.  */
+#define UNSCOPED_ENUM_P(TYPE)                                           \
+  (TREE_CODE (TYPE) == ENUMERAL_TYPE && !ENUM_IS_SCOPED (TYPE))
+
+/* Set the flag indicating whether an ENUMERAL_TYPE is a C++0x scoped
+   enumeration type (1) or a normal (unscoped) enumeration type
+   (0).  */
+#define SET_SCOPED_ENUM_P(TYPE, VAL)                    \
+  (ENUM_IS_SCOPED (TYPE) = (VAL))
+
+#define SET_OPAQUE_ENUM_P(TYPE, VAL)                    \
+  (ENUM_IS_OPAQUE (TYPE) = (VAL))
+
+#define OPAQUE_ENUM_P(TYPE)				\
+  (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_OPAQUE (TYPE))
+
+/* Determines whether an ENUMERAL_TYPE has an explicit
+   underlying type.  */
+#define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
+
+/* Returns the underlying type of the given enumeration type. The
+   underlying type is determined in different ways, depending on the
+   properties of the enum:
+
+     - In C++0x, the underlying type can be explicitly specified, e.g.,
+
+         enum E1 : char { ... } // underlying type is char
+
+     - In a C++0x scoped enumeration, the underlying type is int
+       unless otherwises specified:
+
+         enum class E2 { ... } // underlying type is int
+
+     - Otherwise, the underlying type is determined based on the
+       values of the enumerators. In this case, the
+       ENUM_UNDERLYING_TYPE will not be set until after the definition
+       of the enumeration is completed by finish_enum.  */
+#define ENUM_UNDERLYING_TYPE(TYPE) \
+  TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
+
+/* [dcl.init.aggr]
+
+   An aggregate is an array or a class with no user-provided
+   constructors, no brace-or-equal-initializers for non-static data
+   members, no private or protected non-static data members, no
+   base classes, and no virtual functions.
+
+   As an extension, we also treat vectors as aggregates.  Keep these
+   checks in ascending code order.  */
+#define CP_AGGREGATE_TYPE_P(TYPE)				\
+  (TREE_CODE (TYPE) == VECTOR_TYPE				\
+   ||TREE_CODE (TYPE) == ARRAY_TYPE				\
+   || (CLASS_TYPE_P (TYPE) && !CLASSTYPE_NON_AGGREGATE (TYPE)))
+
+/* Nonzero for a class type means that the class type has a
+   user-declared constructor.  */
+#define TYPE_HAS_USER_CONSTRUCTOR(NODE) (TYPE_LANG_FLAG_1 (NODE))
+
+/* When appearing in an INDIRECT_REF, it means that the tree structure
+   underneath is actually a call to a constructor.  This is needed
+   when the constructor must initialize local storage (which can
+   be automatically destroyed), rather than allowing it to allocate
+   space from the heap.
+
+   When appearing in a SAVE_EXPR, it means that underneath
+   is a call to a constructor.
+
+   When appearing in a CONSTRUCTOR, the expression is a
+   compound literal.
+
+   When appearing in a FIELD_DECL, it means that this field
+   has been duly initialized in its constructor.  */
+#define TREE_HAS_CONSTRUCTOR(NODE) (TREE_LANG_FLAG_4 (NODE))
+
+/* True if NODE is a brace-enclosed initializer.  */
+#define BRACE_ENCLOSED_INITIALIZER_P(NODE) \
+  (TREE_CODE (NODE) == CONSTRUCTOR && TREE_TYPE (NODE) == init_list_type_node)
+
+/* True if NODE is a compound-literal, i.e., a brace-enclosed
+   initializer cast to a particular type.  */
+#define COMPOUND_LITERAL_P(NODE) \
+  (TREE_CODE (NODE) == CONSTRUCTOR && TREE_HAS_CONSTRUCTOR (NODE))
+
+#define EMPTY_CONSTRUCTOR_P(NODE) (TREE_CODE (NODE) == CONSTRUCTOR \
+				   && vec_safe_is_empty(CONSTRUCTOR_ELTS(NODE))\
+				   && !TREE_HAS_CONSTRUCTOR (NODE))
+
+/* True if NODE is a init-list used as a direct-initializer, i.e.
+   B b{1,2}, not B b({1,2}) or B b = {1,2}.  */
+#define CONSTRUCTOR_IS_DIRECT_INIT(NODE) (TREE_LANG_FLAG_0 (CONSTRUCTOR_CHECK (NODE)))
+
+/* True if NODE represents a conversion for direct-initialization in a
+   template.  Set by perform_implicit_conversion_flags.  */
+#define IMPLICIT_CONV_EXPR_DIRECT_INIT(NODE) \
+  (TREE_LANG_FLAG_0 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
+
+/* Nonzero means that an object of this type can not be initialized using
+   an initializer list.  */
+#define CLASSTYPE_NON_AGGREGATE(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->non_aggregate)
+#define TYPE_NON_AGGREGATE_CLASS(NODE) \
+  (CLASS_TYPE_P (NODE) && CLASSTYPE_NON_AGGREGATE (NODE))
+
+/* Nonzero if there is a non-trivial X::op=(cv X&) for this class.  */
+#define TYPE_HAS_COMPLEX_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_assign)
+
+/* Nonzero if there is a non-trivial X::X(cv X&) for this class.  */
+#define TYPE_HAS_COMPLEX_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_ctor)
+
+/* Nonzero if there is a non-trivial X::op=(X&&) for this class.  */
+#define TYPE_HAS_COMPLEX_MOVE_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_assign)
+
+/* Nonzero if there is a non-trivial X::X(X&&) for this class.  */
+#define TYPE_HAS_COMPLEX_MOVE_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_ctor)
+
+/* Nonzero if there is a non-trivial default constructor for this class.  */
+#define TYPE_HAS_COMPLEX_DFLT(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_dflt)
+
+/* Nonzero if TYPE has a trivial destructor.  From [class.dtor]:
+
+     A destructor is trivial if it is an implicitly declared
+     destructor and if:
+
+       - all of the direct base classes of its class have trivial
+	 destructors,
+
+       - for all of the non-static data members of its class that are
+	 of class type (or array thereof), each such class has a
+	 trivial destructor.  */
+#define TYPE_HAS_TRIVIAL_DESTRUCTOR(NODE) \
+  (!TYPE_HAS_NONTRIVIAL_DESTRUCTOR (NODE))
+
+/* Nonzero for _TYPE node means that this type does not have a trivial
+   destructor.  Therefore, destroying an object of this type will
+   involve a call to a destructor.  This can apply to objects of
+   ARRAY_TYPE is the type of the elements needs a destructor.  */
+#define TYPE_HAS_NONTRIVIAL_DESTRUCTOR(NODE) \
+  (TYPE_LANG_FLAG_4 (NODE))
+
+/* Nonzero for class type means that the default constructor is trivial.  */
+#define TYPE_HAS_TRIVIAL_DFLT(NODE) \
+  (TYPE_HAS_DEFAULT_CONSTRUCTOR (NODE) && ! TYPE_HAS_COMPLEX_DFLT (NODE))
+
+/* Nonzero for class type means that copy initialization of this type can use
+   a bitwise copy.  */
+#define TYPE_HAS_TRIVIAL_COPY_CTOR(NODE) \
+  (TYPE_HAS_COPY_CTOR (NODE) && ! TYPE_HAS_COMPLEX_COPY_CTOR (NODE))
+
+/* Nonzero for class type means that assignment of this type can use
+   a bitwise copy.  */
+#define TYPE_HAS_TRIVIAL_COPY_ASSIGN(NODE) \
+  (TYPE_HAS_COPY_ASSIGN (NODE) && ! TYPE_HAS_COMPLEX_COPY_ASSIGN (NODE))
+
+/* Returns true if NODE is a pointer-to-data-member.  */
+#define TYPE_PTRDATAMEM_P(NODE)			\
+  (TREE_CODE (NODE) == OFFSET_TYPE)
+/* Returns true if NODE is a pointer.  */
+#define TYPE_PTR_P(NODE)			\
+  (TREE_CODE (NODE) == POINTER_TYPE)
+
+/* Returns true if NODE is an object type:
+
+     [basic.types]
+
+     An object type is a (possibly cv-qualified) type that is not a
+     function type, not a reference type, and not a void type.
+
+   Keep these checks in ascending order, for speed.  */
+#define TYPE_OBJ_P(NODE)			\
+  (TREE_CODE (NODE) != REFERENCE_TYPE		\
+   && !VOID_TYPE_P (NODE)  		        \
+   && TREE_CODE (NODE) != FUNCTION_TYPE		\
+   && TREE_CODE (NODE) != METHOD_TYPE)
+
+/* Returns true if NODE is a pointer to an object.  Keep these checks
+   in ascending tree code order.  */
+#define TYPE_PTROB_P(NODE)					\
+  (TYPE_PTR_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
+
+/* Returns true if NODE is a reference to an object.  Keep these checks
+   in ascending tree code order.  */
+#define TYPE_REF_OBJ_P(NODE)					\
+  (TREE_CODE (NODE) == REFERENCE_TYPE && TYPE_OBJ_P (TREE_TYPE (NODE)))
+
+/* Returns true if NODE is a pointer to an object, or a pointer to
+   void.  Keep these checks in ascending tree code order.  */
+#define TYPE_PTROBV_P(NODE)					\
+  (TYPE_PTR_P (NODE)						\
+   && !(TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE		\
+	|| TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE))
+
+/* Returns true if NODE is a pointer to function.  */
+#define TYPE_PTRFN_P(NODE)				\
+  (TYPE_PTR_P (NODE)			                \
+   && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
+
+/* Returns true if NODE is a reference to function.  */
+#define TYPE_REFFN_P(NODE)				\
+  (TREE_CODE (NODE) == REFERENCE_TYPE			\
+   && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
+
+/* Nonzero for _TYPE node means that this type is a pointer to member
+   function type.  */
+#define TYPE_PTRMEMFUNC_P(NODE)		\
+  (TREE_CODE (NODE) == RECORD_TYPE	\
+   && TYPE_LANG_SPECIFIC (NODE)		\
+   && TYPE_PTRMEMFUNC_FLAG (NODE))
+
+#define TYPE_PTRMEMFUNC_FLAG(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->ptrmemfunc_flag)
+
+/* Returns true if NODE is a pointer-to-member.  */
+#define TYPE_PTRMEM_P(NODE) \
+  (TYPE_PTRDATAMEM_P (NODE) || TYPE_PTRMEMFUNC_P (NODE))
+
+/* Returns true if NODE is a pointer or a pointer-to-member.  */
+#define TYPE_PTR_OR_PTRMEM_P(NODE) \
+  (TYPE_PTR_P (NODE) || TYPE_PTRMEM_P (NODE))
+
+/* Indicates when overload resolution may resolve to a pointer to
+   member function. [expr.unary.op]/3 */
+#define PTRMEM_OK_P(NODE) \
+  TREE_LANG_FLAG_0 (TREE_CHECK3 ((NODE), ADDR_EXPR, OFFSET_REF, SCOPE_REF))
+
+/* Get the POINTER_TYPE to the METHOD_TYPE associated with this
+   pointer to member function.  TYPE_PTRMEMFUNC_P _must_ be true,
+   before using this macro.  */
+#define TYPE_PTRMEMFUNC_FN_TYPE(NODE) \
+  (TREE_TYPE (TYPE_FIELDS (NODE)))
+
+/* Returns `A' for a type like `int (A::*)(double)' */
+#define TYPE_PTRMEMFUNC_OBJECT_TYPE(NODE) \
+  TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
+
+/* These are use to manipulate the canonical RECORD_TYPE from the
+   hashed POINTER_TYPE, and can only be used on the POINTER_TYPE.  */
+#define TYPE_GET_PTRMEMFUNC_TYPE(NODE) \
+  (TYPE_LANG_SPECIFIC (NODE) ? LANG_TYPE_PTRMEM_CHECK (NODE)->record : NULL)
+#define TYPE_SET_PTRMEMFUNC_TYPE(NODE, VALUE)				\
+  do {									\
+    if (TYPE_LANG_SPECIFIC (NODE) == NULL)				\
+      {									\
+	TYPE_LANG_SPECIFIC (NODE) = ggc_alloc_cleared_lang_type		\
+	 (sizeof (struct lang_type_ptrmem));				\
+	TYPE_LANG_SPECIFIC (NODE)->u.ptrmem.h.is_lang_type_class = 0;	\
+      }									\
+    TYPE_LANG_SPECIFIC (NODE)->u.ptrmem.record = (VALUE);		\
+  } while (0)
+
+/* For a pointer-to-member type of the form `T X::*', this is `X'.
+   For a type like `void (X::*)() const', this type is `X', not `const
+   X'.  To get at the `const X' you have to look at the
+   TYPE_PTRMEM_POINTED_TO_TYPE; there, the first parameter will have
+   type `const X*'.  */
+#define TYPE_PTRMEM_CLASS_TYPE(NODE)			\
+  (TYPE_PTRDATAMEM_P (NODE)					\
+   ? TYPE_OFFSET_BASETYPE (NODE)		\
+   : TYPE_PTRMEMFUNC_OBJECT_TYPE (NODE))
+
+/* For a pointer-to-member type of the form `T X::*', this is `T'.  */
+#define TYPE_PTRMEM_POINTED_TO_TYPE(NODE)		\
+   (TYPE_PTRDATAMEM_P (NODE)				\
+    ? TREE_TYPE (NODE)					\
+    : TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
+
+/* For a pointer-to-member constant `X::Y' this is the RECORD_TYPE for
+   `X'.  */
+#define PTRMEM_CST_CLASS(NODE) \
+  TYPE_PTRMEM_CLASS_TYPE (TREE_TYPE (PTRMEM_CST_CHECK (NODE)))
+
+/* For a pointer-to-member constant `X::Y' this is the _DECL for
+   `Y'.  */
+#define PTRMEM_CST_MEMBER(NODE) (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->member)
+
+/* The expression in question for a TYPEOF_TYPE.  */
+#define TYPEOF_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (TYPEOF_TYPE_CHECK (NODE)))
+
+/* The type in question for an UNDERLYING_TYPE.  */
+#define UNDERLYING_TYPE_TYPE(NODE) \
+  (TYPE_VALUES_RAW (UNDERLYING_TYPE_CHECK (NODE)))
+
+/* The type in question for BASES.  */
+#define BASES_TYPE(NODE) \
+  (TYPE_VALUES_RAW (BASES_CHECK (NODE)))
+
+#define BASES_DIRECT(NODE) \
+  TREE_LANG_FLAG_0 (BASES_CHECK (NODE))
+
+/* The expression in question for a DECLTYPE_TYPE.  */
+#define DECLTYPE_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (DECLTYPE_TYPE_CHECK (NODE)))
+
+/* Whether the DECLTYPE_TYPE_EXPR of NODE was originally parsed as an
+   id-expression or a member-access expression. When false, it was
+   parsed as a full expression.  */
+#define DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P(NODE) \
+  (DECLTYPE_TYPE_CHECK (NODE))->type_common.string_flag
+
+/* These flags indicate that we want different semantics from normal
+   decltype: lambda capture just drops references, init capture
+   uses auto semantics, lambda proxies look through implicit dereference.  */
+#define DECLTYPE_FOR_LAMBDA_CAPTURE(NODE) \
+  TREE_LANG_FLAG_0 (DECLTYPE_TYPE_CHECK (NODE))
+#define DECLTYPE_FOR_INIT_CAPTURE(NODE) \
+  TREE_LANG_FLAG_1 (DECLTYPE_TYPE_CHECK (NODE))
+#define DECLTYPE_FOR_LAMBDA_PROXY(NODE) \
+  TREE_LANG_FLAG_2 (DECLTYPE_TYPE_CHECK (NODE))
+
+/* Nonzero for VAR_DECL and FUNCTION_DECL node means that `extern' was
+   specified in its declaration.  This can also be set for an
+   erroneously declared PARM_DECL.  */
+#define DECL_THIS_EXTERN(NODE) \
+  DECL_LANG_FLAG_2 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
+
+/* Nonzero for VAR_DECL and FUNCTION_DECL node means that `static' was
+   specified in its declaration.  This can also be set for an
+   erroneously declared PARM_DECL.  */
+#define DECL_THIS_STATIC(NODE) \
+  DECL_LANG_FLAG_6 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
+
+/* Nonzero for FIELD_DECL node means that this field is a lambda capture
+   field for an array of runtime bound.  */
+#define DECL_VLA_CAPTURE_P(NODE) \
+  DECL_LANG_FLAG_1 (FIELD_DECL_CHECK (NODE))
+
+/* Nonzero for FIELD_DECL node means that this field is a base class
+   of the parent object, as opposed to a member field.  */
+#define DECL_FIELD_IS_BASE(NODE) \
+  DECL_LANG_FLAG_6 (FIELD_DECL_CHECK (NODE))
+
+/* Nonzero for FIELD_DECL node means that this field is a simple (no
+   explicit initializer) lambda capture field, making it invisible to
+   name lookup in unevaluated contexts.  */
+#define DECL_NORMAL_CAPTURE_P(NODE) \
+  DECL_LANG_FLAG_7 (FIELD_DECL_CHECK (NODE))
+
+/* Nonzero if TYPE is an anonymous union or struct type.  We have to use a
+   flag for this because "A union for which objects or pointers are
+   declared is not an anonymous union" [class.union].  */
+#define ANON_AGGR_TYPE_P(NODE)				\
+  (CLASS_TYPE_P (NODE) && LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr)
+#define SET_ANON_AGGR_TYPE_P(NODE)			\
+  (LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr = 1)
+
+/* Nonzero if TYPE is an anonymous union type.  */
+#define ANON_UNION_TYPE_P(NODE) \
+  (TREE_CODE (NODE) == UNION_TYPE && ANON_AGGR_TYPE_P (NODE))
+
+/* Define fields and accessors for nodes representing declared names.  */
+
+#define TYPE_WAS_ANONYMOUS(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->was_anonymous)
+
+/* C++: all of these are overloaded!  These apply only to TYPE_DECLs.  */
+
+/* The format of each node in the DECL_FRIENDLIST is as follows:
+
+   The TREE_PURPOSE will be the name of a function, i.e., an
+   IDENTIFIER_NODE.  The TREE_VALUE will be itself a TREE_LIST, whose
+   TREE_VALUEs are friends with the given name.  */
+#define DECL_FRIENDLIST(NODE)		(DECL_INITIAL (NODE))
+#define FRIEND_NAME(LIST) (TREE_PURPOSE (LIST))
+#define FRIEND_DECLS(LIST) (TREE_VALUE (LIST))
+
+/* The DECL_ACCESS, if non-NULL, is a TREE_LIST.  The TREE_PURPOSE of
+   each node is a type; the TREE_VALUE is the access granted for this
+   DECL in that type.  The DECL_ACCESS is set by access declarations.
+   For example, if a member that would normally be public in a
+   derived class is made protected, then the derived class and the
+   protected_access_node will appear in the DECL_ACCESS for the node.  */
+#define DECL_ACCESS(NODE) (LANG_DECL_U2_CHECK (NODE, 0)->access)
+
+/* Nonzero if the FUNCTION_DECL is a global constructor.  */
+#define DECL_GLOBAL_CTOR_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->global_ctor_p)
+
+/* Nonzero if the FUNCTION_DECL is a global destructor.  */
+#define DECL_GLOBAL_DTOR_P(NODE) \
+  (LANG_DECL_FN_CHECK (NODE)->global_dtor_p)
+
+/* Accessor macros for C++ template decl nodes.  */
+
+/* The DECL_TEMPLATE_PARMS are a list.  The TREE_PURPOSE of each node
+   is a INT_CST whose TREE_INT_CST_LOW indicates the level of the
+   template parameters, with 1 being the outermost set of template
+   parameters.  The TREE_VALUE is a vector, whose elements are the
+   template parameters at each level.  Each element in the vector is a
+   TREE_LIST, whose TREE_VALUE is a PARM_DECL (if the parameter is a
+   non-type parameter), or a TYPE_DECL (if the parameter is a type
+   parameter).  The TREE_PURPOSE is the default value, if any.  The
+   TEMPLATE_PARM_INDEX for the parameter is available as the
+   DECL_INITIAL (for a PARM_DECL) or as the TREE_TYPE (for a
+   TYPE_DECL).  */
+#define DECL_TEMPLATE_PARMS(NODE)       \
+  TEMPLATE_DECL_CHECK (NODE)->decl_non_common.arguments
+#define DECL_INNERMOST_TEMPLATE_PARMS(NODE) \
+   INNERMOST_TEMPLATE_PARMS (DECL_TEMPLATE_PARMS (NODE))
+#define DECL_NTPARMS(NODE) \
+   TREE_VEC_LENGTH (DECL_INNERMOST_TEMPLATE_PARMS (NODE))
+/* For function, method, class-data templates.  */
+#define DECL_TEMPLATE_RESULT(NODE)      \
+  DECL_RESULT_FLD (TEMPLATE_DECL_CHECK (NODE))
+/* For a function template at namespace scope, DECL_TEMPLATE_INSTANTIATIONS
+   lists all instantiations and specializations of the function so that
+   tsubst_friend_function can reassign them to another template if we find
+   that the namespace-scope template is really a partial instantiation of a
+   friend template.
+
+   For a class template the DECL_TEMPLATE_INSTANTIATIONS lists holds
+   all instantiations and specializations of the class type, including
+   partial instantiations and partial specializations, so that if we
+   explicitly specialize a partial instantiation we can walk the list
+   in maybe_process_partial_specialization and reassign them or complain
+   as appropriate.
+
+   In both cases, the TREE_PURPOSE of each node contains the arguments
+   used; the TREE_VALUE contains the generated variable.  The template
+   arguments are always complete.  For example, given:
+
+      template <class T> struct S1 {
+	template <class U> struct S2 {};
+	template <class U> struct S2<U*> {};
+      };
+
+   the record for the partial specialization will contain, as its
+   argument list, { {T}, {U*} }, and will be on the
+   DECL_TEMPLATE_INSTANTIATIONS list for `template <class T> template
+   <class U> struct S1<T>::S2'.
+
+   This list is not used for other templates.  */
+#define DECL_TEMPLATE_INSTANTIATIONS(NODE) \
+  DECL_VINDEX (TEMPLATE_DECL_CHECK (NODE))
+
+/* For a class template, this list contains the partial
+   specializations of this template.  (Full specializations are not
+   recorded on this list.)  The TREE_PURPOSE holds the arguments used
+   in the partial specialization (e.g., for `template <class T> struct
+   S<T*, int>' this will be `T*, int'.)  The arguments will also include
+   any outer template arguments.  The TREE_VALUE holds the TEMPLATE_DECL
+   for the partial specialization.  The TREE_TYPE is the _TYPE node for
+   the partial specialization.
+
+   This list is not used for other templates.  */
+#define DECL_TEMPLATE_SPECIALIZATIONS(NODE)     \
+  DECL_SIZE (TEMPLATE_DECL_CHECK (NODE))
+
+/* Nonzero for a DECL which is actually a template parameter.  Keep
+   these checks in ascending tree code order.   */
+#define DECL_TEMPLATE_PARM_P(NODE)		\
+  (DECL_LANG_FLAG_0 (NODE)			\
+   && (TREE_CODE (NODE) == CONST_DECL		\
+       || TREE_CODE (NODE) == PARM_DECL		\
+       || TREE_CODE (NODE) == TYPE_DECL		\
+       || TREE_CODE (NODE) == TEMPLATE_DECL))
+
+/* Mark NODE as a template parameter.  */
+#define SET_DECL_TEMPLATE_PARM_P(NODE) \
+  (DECL_LANG_FLAG_0 (NODE) = 1)
+
+/* Nonzero if NODE is a template template parameter.  */
+#define DECL_TEMPLATE_TEMPLATE_PARM_P(NODE) \
+  (TREE_CODE (NODE) == TEMPLATE_DECL && DECL_TEMPLATE_PARM_P (NODE))
+
+/* Nonzero for a DECL that represents a function template.  */
+#define DECL_FUNCTION_TEMPLATE_P(NODE)                          \
+  (TREE_CODE (NODE) == TEMPLATE_DECL                            \
+   && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE			\
+   && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == FUNCTION_DECL)
+
+/* Nonzero for a DECL that represents a class template or alias
+   template.  */
+#define DECL_TYPE_TEMPLATE_P(NODE)				\
+  (TREE_CODE (NODE) == TEMPLATE_DECL				\
+   && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE			\
+   && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == TYPE_DECL)
+
+/* Nonzero for a DECL that represents a class template.  */
+#define DECL_CLASS_TEMPLATE_P(NODE)				\
+  (DECL_TYPE_TEMPLATE_P (NODE)					\
+   && DECL_IMPLICIT_TYPEDEF_P (DECL_TEMPLATE_RESULT (NODE)))
+
+/* Nonzero for a TEMPLATE_DECL that represents an alias template.  */
+#define DECL_ALIAS_TEMPLATE_P(NODE)			\
+  (DECL_TYPE_TEMPLATE_P (NODE)				\
+   && !DECL_ARTIFICIAL (DECL_TEMPLATE_RESULT (NODE)))
+
+/* Nonzero for a NODE which declares a type.  */
+#define DECL_DECLARES_TYPE_P(NODE) \
+  (TREE_CODE (NODE) == TYPE_DECL || DECL_TYPE_TEMPLATE_P (NODE))
+
+/* Nonzero if NODE declares a function.  */
+#define DECL_DECLARES_FUNCTION_P(NODE) \
+  (TREE_CODE (NODE) == FUNCTION_DECL || DECL_FUNCTION_TEMPLATE_P (NODE))
+
+/* Nonzero if NODE is the typedef implicitly generated for a type when
+   the type is declared.  In C++, `struct S {};' is roughly
+   equivalent to `struct S {}; typedef struct S S;' in C.
+   DECL_IMPLICIT_TYPEDEF_P will hold for the typedef indicated in this
+   example.  In C++, there is a second implicit typedef for each
+   class, in the scope of `S' itself, so that you can say `S::S'.
+   DECL_SELF_REFERENCE_P will hold for that second typedef.  */
+#define DECL_IMPLICIT_TYPEDEF_P(NODE) \
+  (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_2 (NODE))
+#define SET_DECL_IMPLICIT_TYPEDEF_P(NODE) \
+  (DECL_LANG_FLAG_2 (NODE) = 1)
+#define DECL_SELF_REFERENCE_P(NODE) \
+  (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_4 (NODE))
+#define SET_DECL_SELF_REFERENCE_P(NODE) \
+  (DECL_LANG_FLAG_4 (NODE) = 1)
+
+/* A `primary' template is one that has its own template header and is not
+   a partial specialization.  A member function of a class template is a
+   template, but not primary.  A member template is primary.  Friend
+   templates are primary, too.  */
+
+/* Returns the primary template corresponding to these parameters.  */
+#define DECL_PRIMARY_TEMPLATE(NODE) \
+  (TREE_TYPE (DECL_INNERMOST_TEMPLATE_PARMS (NODE)))
+
+/* Returns nonzero if NODE is a primary template.  */
+#define PRIMARY_TEMPLATE_P(NODE) (DECL_PRIMARY_TEMPLATE (NODE) == (NODE))
+
+/* Nonzero iff NODE is a specialization of a template.  The value
+   indicates the type of specializations:
+
+     1=implicit instantiation
+
+     2=partial or explicit specialization, e.g.:
+
+        template <> int min<int> (int, int),
+
+     3=explicit instantiation, e.g.:
+  
+        template int min<int> (int, int);
+
+   Note that NODE will be marked as a specialization even if the
+   template it is instantiating is not a primary template.  For
+   example, given:
+
+     template <typename T> struct O { 
+       void f();
+       struct I {}; 
+     };
+    
+   both O<int>::f and O<int>::I will be marked as instantiations.
+
+   If DECL_USE_TEMPLATE is nonzero, then DECL_TEMPLATE_INFO will also
+   be non-NULL.  */
+#define DECL_USE_TEMPLATE(NODE) (DECL_LANG_SPECIFIC (NODE)->u.base.use_template)
+
+/* Like DECL_USE_TEMPLATE, but for class types.  */
+#define CLASSTYPE_USE_TEMPLATE(NODE) \
+  (LANG_TYPE_CLASS_CHECK (NODE)->use_template)
+
+/* True if NODE is a specialization of a primary template.  */
+#define CLASSTYPE_SPECIALIZATION_OF_PRIMARY_TEMPLATE_P(NODE)	\
+  (CLASS_TYPE_P (NODE)						\
+   && CLASSTYPE_USE_TEMPLATE (NODE)				\
+   && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
+
+#define DECL_TEMPLATE_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) & 1)
+#define CLASSTYPE_TEMPLATE_INSTANTIATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) & 1)
+
+#define DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) == 2)
+#define SET_DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) = 2)
+
+/* Returns true for an explicit or partial specialization of a class
+   template.  */
+#define CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) == 2)
+#define SET_CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) = 2)
+
+#define DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 1)
+#define SET_DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 1)
+#define CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) == 1)
+#define SET_CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) = 1)
+
+#define DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 3)
+#define SET_DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 3)
+#define CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) == 3)
+#define SET_CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
+  (CLASSTYPE_USE_TEMPLATE (NODE) = 3)
+
+/* Nonzero if DECL is a friend function which is an instantiation
+   from the point of view of the compiler, but not from the point of
+   view of the language.  For example given:
+      template <class T> struct S { friend void f(T) {}; };
+   the declaration of `void f(int)' generated when S<int> is
+   instantiated will not be a DECL_TEMPLATE_INSTANTIATION, but will be
+   a DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION.  */
+#define DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION(DECL) \
+  (DECL_TEMPLATE_INFO (DECL) && !DECL_USE_TEMPLATE (DECL))
+
+/* Nonzero if DECL is a function generated from a function 'temploid',
+   i.e. template, member of class template, or dependent friend.  */
+#define DECL_TEMPLOID_INSTANTIATION(DECL)		\
+  (DECL_TEMPLATE_INSTANTIATION (DECL)			\
+   || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (DECL))
+
+/* Nonzero if DECL is either defined implicitly by the compiler or
+   generated from a temploid.  */
+#define DECL_GENERATED_P(DECL) \
+  (DECL_TEMPLOID_INSTANTIATION (DECL) || DECL_DEFAULTED_FN (DECL))
+
+/* Nonzero iff we are currently processing a declaration for an
+   entity with its own template parameter list, and which is not a
+   full specialization.  */
+#define PROCESSING_REAL_TEMPLATE_DECL_P() \
+  (processing_template_decl > template_class_depth (current_scope ()))
+
+/* Nonzero if this VAR_DECL or FUNCTION_DECL has already been
+   instantiated, i.e. its definition has been generated from the
+   pattern given in the template.  */
+#define DECL_TEMPLATE_INSTANTIATED(NODE) \
+  DECL_LANG_FLAG_1 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
+
+/* We know what we're doing with this decl now.  */
+#define DECL_INTERFACE_KNOWN(NODE) DECL_LANG_FLAG_5 (NODE)
+
+/* DECL_EXTERNAL must be set on a decl until the decl is actually emitted,
+   so that assemble_external will work properly.  So we have this flag to
+   tell us whether the decl is really not external.
+
+   This flag does not indicate whether or not the decl is defined in the
+   current translation unit; it indicates whether or not we should emit the
+   decl at the end of compilation if it is defined and needed.  */
+#define DECL_NOT_REALLY_EXTERN(NODE) \
+  (DECL_LANG_SPECIFIC (NODE)->u.base.not_really_extern)
+
+#define DECL_REALLY_EXTERN(NODE) \
+  (DECL_EXTERNAL (NODE) && ! DECL_NOT_REALLY_EXTERN (NODE))
+
+/* A thunk is a stub function.
+
+   A thunk is an alternate entry point for an ordinary FUNCTION_DECL.
+   The address of the ordinary FUNCTION_DECL is given by the
+   DECL_INITIAL, which is always an ADDR_EXPR whose operand is a
+   FUNCTION_DECL.  The job of the thunk is to either adjust the this
+   pointer before transferring control to the FUNCTION_DECL, or call
+   FUNCTION_DECL and then adjust the result value. Note, the result
+   pointer adjusting thunk must perform a call to the thunked
+   function, (or be implemented via passing some invisible parameter
+   to the thunked function, which is modified to perform the
+   adjustment just before returning).
+
+   A thunk may perform either, or both, of the following operations:
+
+   o Adjust the this or result pointer by a constant offset.
+   o Adjust the this or result pointer by looking up a vcall or vbase offset
+     in the vtable.
+
+   A this pointer adjusting thunk converts from a base to a derived
+   class, and hence adds the offsets. A result pointer adjusting thunk
+   converts from a derived class to a base, and hence subtracts the
+   offsets.  If both operations are performed, then the constant
+   adjustment is performed first for this pointer adjustment and last
+   for the result pointer adjustment.
+
+   The constant adjustment is given by THUNK_FIXED_OFFSET.  If the
+   vcall or vbase offset is required, THUNK_VIRTUAL_OFFSET is
+   used. For this pointer adjusting thunks, it is the vcall offset
+   into the vtable.  For result pointer adjusting thunks it is the
+   binfo of the virtual base to convert to.  Use that binfo's vbase
+   offset.
+
+   It is possible to have equivalent covariant thunks.  These are
+   distinct virtual covariant thunks whose vbase offsets happen to
+   have the same value.  THUNK_ALIAS is used to pick one as the
+   canonical thunk, which will get all the this pointer adjusting
+   thunks attached to it.  */
+
+/* An integer indicating how many bytes should be subtracted from the
+   this or result pointer when this function is called.  */
+#define THUNK_FIXED_OFFSET(DECL) \
+  (DECL_LANG_SPECIFIC (THUNK_FUNCTION_CHECK (DECL))->u.fn.u5.fixed_offset)
+
+/* A tree indicating how to perform the virtual adjustment. For a this
+   adjusting thunk it is the number of bytes to be added to the vtable
+   to find the vcall offset. For a result adjusting thunk, it is the
+   binfo of the relevant virtual base.  If NULL, then there is no
+   virtual adjust.  (The vptr is always located at offset zero from
+   the this or result pointer.)  (If the covariant type is within the
+   class hierarchy being laid out, the vbase index is not yet known
+   at the point we need to create the thunks, hence the need to use
+   binfos.)  */
+
+#define THUNK_VIRTUAL_OFFSET(DECL) \
+  (LANG_DECL_U2_CHECK (FUNCTION_DECL_CHECK (DECL), 0)->access)
+
+/* A thunk which is equivalent to another thunk.  */
+#define THUNK_ALIAS(DECL) \
+  (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (DECL))->u.min.template_info)
+
+/* For thunk NODE, this is the FUNCTION_DECL thunked to.  It is
+   possible for the target to be a thunk too.  */
+#define THUNK_TARGET(NODE)				\
+  (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
+
+/* True for a SCOPE_REF iff the "template" keyword was used to
+   indicate that the qualified name denotes a template.  */
+#define QUALIFIED_NAME_IS_TEMPLATE(NODE) \
+  (TREE_LANG_FLAG_1 (SCOPE_REF_CHECK (NODE)))
+
+/* True for an OMP_ATOMIC that has dependent parameters.  These are stored
+   as an expr in operand 1, and integer_zero_node in operand 0.  */
+#define OMP_ATOMIC_DEPENDENT_P(NODE) \
+  (TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == INTEGER_CST)
+
+/* Used while gimplifying continue statements bound to OMP_FOR nodes.  */
+#define OMP_FOR_GIMPLIFYING_P(NODE) \
+  (TREE_LANG_FLAG_0 (OMP_LOOP_CHECK (NODE)))
+
+/* A language-specific token attached to the OpenMP data clauses to
+   hold code (or code fragments) related to ctors, dtors, and op=.
+   See semantics.c for details.  */
+#define CP_OMP_CLAUSE_INFO(NODE) \
+  TREE_TYPE (OMP_CLAUSE_RANGE_CHECK (NODE, OMP_CLAUSE_PRIVATE, \
+				     OMP_CLAUSE_LINEAR))
+
+/* Nonzero if this transaction expression's body contains statements.  */
+#define TRANSACTION_EXPR_IS_STMT(NODE) \
+   TREE_LANG_FLAG_0 (TRANSACTION_EXPR_CHECK (NODE))
+
+/* These macros provide convenient access to the various _STMT nodes
+   created when parsing template declarations.  */
+#define TRY_STMTS(NODE)		TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 0)
+#define TRY_HANDLERS(NODE)	TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 1)
+
+#define EH_SPEC_STMTS(NODE)	TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 0)
+#define EH_SPEC_RAISES(NODE)	TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 1)
+
+#define USING_STMT_NAMESPACE(NODE) TREE_OPERAND (USING_STMT_CHECK (NODE), 0)
+
+/* Nonzero if this try block is a function try block.  */
+#define FN_TRY_BLOCK_P(NODE)	TREE_LANG_FLAG_3 (TRY_BLOCK_CHECK (NODE))
+#define HANDLER_PARMS(NODE)	TREE_OPERAND (HANDLER_CHECK (NODE), 0)
+#define HANDLER_BODY(NODE)	TREE_OPERAND (HANDLER_CHECK (NODE), 1)
+#define HANDLER_TYPE(NODE)	TREE_TYPE (HANDLER_CHECK (NODE))
+
+/* CLEANUP_STMT accessors.  The statement(s) covered, the cleanup to run
+   and the VAR_DECL for which this cleanup exists.  */
+#define CLEANUP_BODY(NODE)	TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
+#define CLEANUP_EXPR(NODE)	TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
+#define CLEANUP_DECL(NODE)	TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 2)
+
+/* IF_STMT accessors. These give access to the condition of the if
+   statement, the then block of the if statement, and the else block
+   of the if statement if it exists.  */
+#define IF_COND(NODE)		TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
+#define THEN_CLAUSE(NODE)	TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
+#define ELSE_CLAUSE(NODE)	TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
+#define IF_SCOPE(NODE)		TREE_OPERAND (IF_STMT_CHECK (NODE), 3)
+
+/* WHILE_STMT accessors. These give access to the condition of the
+   while statement and the body of the while statement, respectively.  */
+#define WHILE_COND(NODE)	TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
+#define WHILE_BODY(NODE)	TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
+
+/* DO_STMT accessors. These give access to the condition of the do
+   statement and the body of the do statement, respectively.  */
+#define DO_COND(NODE)		TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
+#define DO_BODY(NODE)		TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
+
+/* FOR_STMT accessors. These give access to the init statement,
+   condition, update expression, and body of the for statement,
+   respectively.  */
+#define FOR_INIT_STMT(NODE)	TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
+#define FOR_COND(NODE)		TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
+#define FOR_EXPR(NODE)		TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
+#define FOR_BODY(NODE)		TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
+#define FOR_SCOPE(NODE)		TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
+
+/* RANGE_FOR_STMT accessors. These give access to the declarator,
+   expression, body, and scope of the statement, respectively.  */
+#define RANGE_FOR_DECL(NODE)	TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 0)
+#define RANGE_FOR_EXPR(NODE)	TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 1)
+#define RANGE_FOR_BODY(NODE)	TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 2)
+#define RANGE_FOR_SCOPE(NODE)	TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 3)
+#define RANGE_FOR_IVDEP(NODE)	TREE_LANG_FLAG_6 (RANGE_FOR_STMT_CHECK (NODE))
+
+#define SWITCH_STMT_COND(NODE)	TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
+#define SWITCH_STMT_BODY(NODE)	TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
+#define SWITCH_STMT_TYPE(NODE)	TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
+#define SWITCH_STMT_SCOPE(NODE)	TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
+
+/* STMT_EXPR accessor.  */
+#define STMT_EXPR_STMT(NODE)	TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
+
+/* EXPR_STMT accessor. This gives the expression associated with an
+   expression statement.  */
+#define EXPR_STMT_EXPR(NODE)	TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
+
+/* True if this TARGET_EXPR was created by build_cplus_new, and so we can
+   discard it if it isn't useful.  */
+#define TARGET_EXPR_IMPLICIT_P(NODE) \
+  TREE_LANG_FLAG_0 (TARGET_EXPR_CHECK (NODE))
+
+/* True if this TARGET_EXPR is the result of list-initialization of a
+   temporary.  */
+#define TARGET_EXPR_LIST_INIT_P(NODE) \
+  TREE_LANG_FLAG_1 (TARGET_EXPR_CHECK (NODE))
+
+/* True if this TARGET_EXPR expresses direct-initialization of an object
+   to be named later.  */
+#define TARGET_EXPR_DIRECT_INIT_P(NODE) \
+  TREE_LANG_FLAG_2 (TARGET_EXPR_CHECK (NODE))
+
+/* True if EXPR expresses direct-initialization of a TYPE.  */
+#define DIRECT_INIT_EXPR_P(TYPE,EXPR)					\
+  (TREE_CODE (EXPR) == TARGET_EXPR && TREE_LANG_FLAG_2 (EXPR)		\
+   && same_type_ignoring_top_level_qualifiers_p (TYPE, TREE_TYPE (EXPR)))
+
+/* True if this CONVERT_EXPR is for a conversion to virtual base in
+   an NSDMI, and should be re-evaluated when used in a constructor.  */
+#define CONVERT_EXPR_VBASE_PATH(NODE) \
+  TREE_LANG_FLAG_0 (CONVERT_EXPR_CHECK (NODE))
+
+/* True if SIZEOF_EXPR argument is type.  */
+#define SIZEOF_EXPR_TYPE_P(NODE) \
+  TREE_LANG_FLAG_0 (SIZEOF_EXPR_CHECK (NODE))
+
+/* An enumeration of the kind of tags that C++ accepts.  */
+enum tag_types {
+  none_type = 0, /* Not a tag type.  */
+  record_type,   /* "struct" types.  */
+  class_type,    /* "class" types.  */
+  union_type,    /* "union" types.  */
+  enum_type,     /* "enum" types.  */
+  typename_type  /* "typename" types.  */
+};
+
+/* The various kinds of lvalues we distinguish.  */
+enum cp_lvalue_kind_flags {
+  clk_none = 0,     /* Things that are not an lvalue.  */
+  clk_ordinary = 1, /* An ordinary lvalue.  */
+  clk_rvalueref = 2,/* An xvalue (rvalue formed using an rvalue reference) */
+  clk_class = 4,    /* A prvalue of class-type.  */
+  clk_bitfield = 8, /* An lvalue for a bit-field.  */
+  clk_packed = 16   /* An lvalue for a packed field.  */
+};
+
+/* This type is used for parameters and variables which hold
+   combinations of the flags in enum cp_lvalue_kind_flags.  */
+typedef int cp_lvalue_kind;
+
+/* Various kinds of template specialization, instantiation, etc.  */
+typedef enum tmpl_spec_kind {
+  tsk_none,		   /* Not a template at all.  */
+  tsk_invalid_member_spec, /* An explicit member template
+			      specialization, but the enclosing
+			      classes have not all been explicitly
+			      specialized.  */
+  tsk_invalid_expl_inst,   /* An explicit instantiation containing
+			      template parameter lists.  */
+  tsk_excessive_parms,	   /* A template declaration with too many
+			      template parameter lists.  */
+  tsk_insufficient_parms,  /* A template declaration with too few
+			      parameter lists.  */
+  tsk_template,		   /* A template declaration.  */
+  tsk_expl_spec,	   /* An explicit specialization.  */
+  tsk_expl_inst		   /* An explicit instantiation.  */
+} tmpl_spec_kind;
+
+/* The various kinds of access.  BINFO_ACCESS depends on these being
+   two bit quantities.  The numerical values are important; they are
+   used to initialize RTTI data structures, so changing them changes
+   the ABI.  */
+typedef enum access_kind {
+  ak_none = 0,		   /* Inaccessible.  */
+  ak_public = 1,	   /* Accessible, as a `public' thing.  */
+  ak_protected = 2,	   /* Accessible, as a `protected' thing.  */
+  ak_private = 3	   /* Accessible, as a `private' thing.  */
+} access_kind;
+
+/* The various kinds of special functions.  If you add to this list,
+   you should update special_function_p as well.  */
+typedef enum special_function_kind {
+  sfk_none = 0,		   /* Not a special function.  This enumeral
+			      must have value zero; see
+			      special_function_p.  */
+  sfk_constructor,	   /* A constructor.  */
+  sfk_copy_constructor,    /* A copy constructor.  */
+  sfk_move_constructor,    /* A move constructor.  */
+  sfk_copy_assignment,     /* A copy assignment operator.  */
+  sfk_move_assignment,     /* A move assignment operator.  */
+  sfk_destructor,	   /* A destructor.  */
+  sfk_complete_destructor, /* A destructor for complete objects.  */
+  sfk_base_destructor,     /* A destructor for base subobjects.  */
+  sfk_deleting_destructor, /* A destructor for complete objects that
+			      deletes the object after it has been
+			      destroyed.  */
+  sfk_conversion,	   /* A conversion operator.  */
+  sfk_inheriting_constructor /* An inheriting constructor */
+} special_function_kind;
+
+/* The various kinds of linkage.  From [basic.link],
+
+      A name is said to have linkage when it might denote the same
+      object, reference, function, type, template, namespace or value
+      as a name introduced in another scope:
+
+      -- When a name has external linkage, the entity it denotes can
+	 be referred to from scopes of other translation units or from
+	 other scopes of the same translation unit.
+
+      -- When a name has internal linkage, the entity it denotes can
+	 be referred to by names from other scopes in the same
+	 translation unit.
+
+      -- When a name has no linkage, the entity it denotes cannot be
+	 referred to by names from other scopes.  */
+
+typedef enum linkage_kind {
+  lk_none,			/* No linkage.  */
+  lk_internal,			/* Internal linkage.  */
+  lk_external			/* External linkage.  */
+} linkage_kind;
+
+typedef enum duration_kind {
+  dk_static,
+  dk_thread,
+  dk_auto,
+  dk_dynamic
+} duration_kind;
+
+/* Bitmask flags to control type substitution.  */
+enum tsubst_flags {
+  tf_none = 0,			 /* nothing special */
+  tf_error = 1 << 0,		 /* give error messages  */
+  tf_warning = 1 << 1,	 	 /* give warnings too  */
+  tf_ignore_bad_quals = 1 << 2,	 /* ignore bad cvr qualifiers */
+  tf_keep_type_decl = 1 << 3,	 /* retain typedef type decls
+				    (make_typename_type use) */
+  tf_ptrmem_ok = 1 << 4,	 /* pointers to member ok (internal
+				    instantiate_type use) */
+  tf_user = 1 << 5,		 /* found template must be a user template
+				    (lookup_template_class use) */
+  tf_conv = 1 << 6,		 /* We are determining what kind of
+				    conversion might be permissible,
+				    not actually performing the
+				    conversion.  */
+  tf_decltype = 1 << 7,          /* We are the operand of decltype.
+				    Used to implement the special rules
+				    for calls in decltype (5.2.2/11).  */
+  tf_partial = 1 << 8,		 /* Doing initial explicit argument
+				    substitution in fn_type_unification.  */
+  /* Convenient substitution flags combinations.  */
+  tf_warning_or_error = tf_warning | tf_error
+};
+
+/* This type is used for parameters and variables which hold
+   combinations of the flags in enum tsubst_flags.  */
+typedef int tsubst_flags_t;
+
+/* The kind of checking we can do looking in a class hierarchy.  */
+enum base_access_flags {
+  ba_any = 0,  /* Do not check access, allow an ambiguous base,
+		      prefer a non-virtual base */
+  ba_unique = 1 << 0,  /* Must be a unique base.  */
+  ba_check_bit = 1 << 1,   /* Check access.  */
+  ba_check = ba_unique | ba_check_bit,
+  ba_ignore_scope = 1 << 2 /* Ignore access allowed by local scope.  */
+};
+
+/* This type is used for parameters and variables which hold
+   combinations of the flags in enum base_access_flags.  */
+typedef int base_access;
+
+/* The various kinds of access check during parsing.  */
+typedef enum deferring_kind {
+  dk_no_deferred = 0, /* Check access immediately */
+  dk_deferred = 1,    /* Deferred check */
+  dk_no_check = 2     /* No access check */
+} deferring_kind;
+
+/* The kind of base we can find, looking in a class hierarchy.
+   Values <0 indicate we failed.  */
+typedef enum base_kind {
+  bk_inaccessible = -3,   /* The base is inaccessible */
+  bk_ambig = -2,	  /* The base is ambiguous */
+  bk_not_base = -1,	  /* It is not a base */
+  bk_same_type = 0,	  /* It is the same type */
+  bk_proper_base = 1,	  /* It is a proper base */
+  bk_via_virtual = 2	  /* It is a proper base, but via a virtual
+			     path. This might not be the canonical
+			     binfo.  */
+} base_kind;
+
+/* Node for "pointer to (virtual) function".
+   This may be distinct from ptr_type_node so gdb can distinguish them.  */
+#define vfunc_ptr_type_node  vtable_entry_type
+
+
+/* For building calls to `delete'.  */
+extern GTY(()) tree integer_two_node;
+
+/* The number of function bodies which we are currently processing.
+   (Zero if we are at namespace scope, one inside the body of a
+   function, two inside the body of a function in a local class, etc.)  */
+extern int function_depth;
+
+/* Nonzero if we are inside eq_specializations, which affects comparison of
+   PARM_DECLs in cp_tree_equal.  */
+extern int comparing_specializations;
+
+/* In parser.c.  */
+
+/* Nonzero if we are parsing an unevaluated operand: an operand to
+   sizeof, typeof, or alignof.  This is a count since operands to
+   sizeof can be nested.  */
+
+extern int cp_unevaluated_operand;
+extern tree cp_convert_range_for (tree, tree, tree, bool);
+extern bool parsing_nsdmi (void);
+
+/* in pt.c  */
+
+/* These values are used for the `STRICT' parameter to type_unification and
+   fn_type_unification.  Their meanings are described with the
+   documentation for fn_type_unification.  */
+
+typedef enum unification_kind_t {
+  DEDUCE_CALL,
+  DEDUCE_CONV,
+  DEDUCE_EXACT
+} unification_kind_t;
+
+/* in class.c */
+
+extern int current_class_depth;
+
+/* An array of all local classes present in this translation unit, in
+   declaration order.  */
+extern GTY(()) vec<tree, va_gc> *local_classes;
+
+/* Here's where we control how name mangling takes place.  */
+
+/* Cannot use '$' up front, because this confuses gdb
+   (names beginning with '$' are gdb-local identifiers).
+
+   Note that all forms in which the '$' is significant are long enough
+   for direct indexing (meaning that if we know there is a '$'
+   at a particular location, we can index into the string at
+   any other location that provides distinguishing characters).  */
+
+/* Define NO_DOT_IN_LABEL in your favorite tm file if your assembler
+   doesn't allow '.' in symbol names.  */
+#ifndef NO_DOT_IN_LABEL
+
+#define JOINER '.'
+
+#define AUTO_TEMP_NAME "_.tmp_"
+#define VFIELD_BASE ".vf"
+#define VFIELD_NAME "_vptr."
+#define VFIELD_NAME_FORMAT "_vptr.%s"
+
+#else /* NO_DOT_IN_LABEL */
+
+#ifndef NO_DOLLAR_IN_LABEL
+
+#define JOINER '$'
+
+#define AUTO_TEMP_NAME "_$tmp_"
+#define VFIELD_BASE "$vf"
+#define VFIELD_NAME "_vptr$"
+#define VFIELD_NAME_FORMAT "_vptr$%s"
+
+#else /* NO_DOLLAR_IN_LABEL */
+
+#define AUTO_TEMP_NAME "__tmp_"
+#define TEMP_NAME_P(ID_NODE) \
+  (!strncmp (IDENTIFIER_POINTER (ID_NODE), AUTO_TEMP_NAME, \
+	     sizeof (AUTO_TEMP_NAME) - 1))
+#define VTABLE_NAME "__vt_"
+#define VTABLE_NAME_P(ID_NODE) \
+  (!strncmp (IDENTIFIER_POINTER (ID_NODE), VTABLE_NAME, \
+	     sizeof (VTABLE_NAME) - 1))
+#define VFIELD_BASE "__vfb"
+#define VFIELD_NAME "__vptr_"
+#define VFIELD_NAME_P(ID_NODE) \
+  (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, \
+	    sizeof (VFIELD_NAME) - 1))
+#define VFIELD_NAME_FORMAT "__vptr_%s"
+
+#endif	/* NO_DOLLAR_IN_LABEL */
+#endif	/* NO_DOT_IN_LABEL */
+
+#define THIS_NAME "this"
+
+#define IN_CHARGE_NAME "__in_chrg"
+
+#define VTBL_PTR_TYPE		"__vtbl_ptr_type"
+#define VTABLE_DELTA_NAME	"__delta"
+#define VTABLE_PFN_NAME		"__pfn"
+
+#define LAMBDANAME_PREFIX "__lambda"
+#define LAMBDANAME_FORMAT LAMBDANAME_PREFIX "%d"
+
+#define UDLIT_OP_ANSI_PREFIX "operator\"\""
+#define UDLIT_OP_ANSI_FORMAT UDLIT_OP_ANSI_PREFIX "%s"
+#define UDLIT_OP_MANGLED_PREFIX "li"
+#define UDLIT_OP_MANGLED_FORMAT UDLIT_OP_MANGLED_PREFIX "%s"
+#define UDLIT_OPER_P(ID_NODE) \
+  (!strncmp (IDENTIFIER_POINTER (ID_NODE), \
+             UDLIT_OP_ANSI_PREFIX, \
+	     sizeof (UDLIT_OP_ANSI_PREFIX) - 1))
+#define UDLIT_OP_SUFFIX(ID_NODE) \
+  (IDENTIFIER_POINTER (ID_NODE) + sizeof (UDLIT_OP_ANSI_PREFIX) - 1)
+
+#if !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL)
+
+#define VTABLE_NAME_P(ID_NODE) (IDENTIFIER_POINTER (ID_NODE)[1] == 'v' \
+  && IDENTIFIER_POINTER (ID_NODE)[2] == 't' \
+  && IDENTIFIER_POINTER (ID_NODE)[3] == JOINER)
+
+#define TEMP_NAME_P(ID_NODE) \
+  (!strncmp (IDENTIFIER_POINTER (ID_NODE), AUTO_TEMP_NAME, sizeof (AUTO_TEMP_NAME)-1))
+#define VFIELD_NAME_P(ID_NODE) \
+  (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, sizeof(VFIELD_NAME)-1))
+
+#endif /* !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL) */
+
+
+/* Nonzero if we're done parsing and into end-of-file activities.  */
+
+extern int at_eof;
+
+/* A list of namespace-scope objects which have constructors or
+   destructors which reside in the global scope.  The decl is stored
+   in the TREE_VALUE slot and the initializer is stored in the
+   TREE_PURPOSE slot.  */
+extern GTY(()) tree static_aggregates;
+/* Likewise, for thread local storage.  */
+extern GTY(()) tree tls_aggregates;
+
+enum overload_flags { NO_SPECIAL = 0, DTOR_FLAG, TYPENAME_FLAG };
+
+/* These are uses as bits in flags passed to various functions to
+   control their behavior.  Despite the LOOKUP_ prefix, many of these
+   do not control name lookup.  ??? Functions using these flags should
+   probably be modified to accept explicit boolean flags for the
+   behaviors relevant to them.  */
+/* Check for access violations.  */
+#define LOOKUP_PROTECT (1 << 0)
+#define LOOKUP_NORMAL (LOOKUP_PROTECT)
+/* Even if the function found by lookup is a virtual function, it
+   should be called directly.  */
+#define LOOKUP_NONVIRTUAL (1 << 1)
+/* Non-converting (i.e., "explicit") constructors are not tried.  This flag
+   indicates that we are not performing direct-initialization.  */
+#define LOOKUP_ONLYCONVERTING (1 << 2)
+#define LOOKUP_IMPLICIT (LOOKUP_NORMAL | LOOKUP_ONLYCONVERTING)
+/* If a temporary is created, it should be created so that it lives
+   as long as the current variable bindings; otherwise it only lives
+   until the end of the complete-expression.  It also forces
+   direct-initialization in cases where other parts of the compiler
+   have already generated a temporary, such as reference
+   initialization and the catch parameter.  */
+#define DIRECT_BIND (1 << 3)
+/* We're performing a user-defined conversion, so more user-defined
+   conversions are not permitted (only built-in conversions).  */
+#define LOOKUP_NO_CONVERSION (1 << 4)
+/* The user has explicitly called a destructor.  (Therefore, we do
+   not need to check that the object is non-NULL before calling the
+   destructor.)  */
+#define LOOKUP_DESTRUCTOR (1 << 5)
+/* Do not permit references to bind to temporaries.  */
+#define LOOKUP_NO_TEMP_BIND (1 << 6)
+/* Do not accept objects, and possibly namespaces.  */
+#define LOOKUP_PREFER_TYPES (1 << 7)
+/* Do not accept objects, and possibly types.   */
+#define LOOKUP_PREFER_NAMESPACES (1 << 8)
+/* Accept types or namespaces.  */
+#define LOOKUP_PREFER_BOTH (LOOKUP_PREFER_TYPES | LOOKUP_PREFER_NAMESPACES)
+/* Return friend declarations and un-declared builtin functions.
+   (Normally, these entities are registered in the symbol table, but
+   not found by lookup.)  */
+#define LOOKUP_HIDDEN (LOOKUP_PREFER_NAMESPACES << 1)
+/* Prefer that the lvalue be treated as an rvalue.  */
+#define LOOKUP_PREFER_RVALUE (LOOKUP_HIDDEN << 1)
+/* We're inside an init-list, so narrowing conversions are ill-formed.  */
+#define LOOKUP_NO_NARROWING (LOOKUP_PREFER_RVALUE << 1)
+/* We're looking up a constructor for list-initialization.  */
+#define LOOKUP_LIST_INIT_CTOR (LOOKUP_NO_NARROWING << 1)
+/* This is the first parameter of a copy constructor.  */
+#define LOOKUP_COPY_PARM (LOOKUP_LIST_INIT_CTOR << 1)
+/* We only want to consider list constructors.  */
+#define LOOKUP_LIST_ONLY (LOOKUP_COPY_PARM << 1)
+/* Return after determining which function to call and checking access.
+   Used by sythesized_method_walk to determine which functions will
+   be called to initialize subobjects, in order to determine exception
+   specification and possible implicit delete.
+   This is kind of a hack, but exiting early avoids problems with trying
+   to perform argument conversions when the class isn't complete yet.  */
+#define LOOKUP_SPECULATIVE (LOOKUP_LIST_ONLY << 1)
+/* Used by calls from defaulted functions to limit the overload set to avoid
+   cycles trying to declare them (core issue 1092).  */
+#define LOOKUP_DEFAULTED (LOOKUP_SPECULATIVE << 1)
+/* Used in calls to store_init_value to suppress its usual call to
+   digest_init.  */
+#define LOOKUP_ALREADY_DIGESTED (LOOKUP_DEFAULTED << 1)
+/* An instantiation with explicit template arguments.  */
+#define LOOKUP_EXPLICIT_TMPL_ARGS (LOOKUP_ALREADY_DIGESTED << 1)
+/* Like LOOKUP_NO_TEMP_BIND, but also prevent binding to xvalues.  */
+#define LOOKUP_NO_RVAL_BIND (LOOKUP_EXPLICIT_TMPL_ARGS << 1)
+/* Used by case_conversion to disregard non-integral conversions.  */
+#define LOOKUP_NO_NON_INTEGRAL (LOOKUP_NO_RVAL_BIND << 1)
+/* Used for delegating constructors in order to diagnose self-delegation.  */
+#define LOOKUP_DELEGATING_CONS (LOOKUP_NO_NON_INTEGRAL << 1)
+
+#define LOOKUP_NAMESPACES_ONLY(F)  \
+  (((F) & LOOKUP_PREFER_NAMESPACES) && !((F) & LOOKUP_PREFER_TYPES))
+#define LOOKUP_TYPES_ONLY(F)  \
+  (!((F) & LOOKUP_PREFER_NAMESPACES) && ((F) & LOOKUP_PREFER_TYPES))
+#define LOOKUP_QUALIFIERS_ONLY(F)     ((F) & LOOKUP_PREFER_BOTH)
+
+
+/* These flags are used by the conversion code.
+   CONV_IMPLICIT   :  Perform implicit conversions (standard and user-defined).
+   CONV_STATIC     :  Perform the explicit conversions for static_cast.
+   CONV_CONST      :  Perform the explicit conversions for const_cast.
+   CONV_REINTERPRET:  Perform the explicit conversions for reinterpret_cast.
+   CONV_PRIVATE    :  Perform upcasts to private bases.
+   CONV_FORCE_TEMP :  Require a new temporary when converting to the same
+		      aggregate type.  */
+
+#define CONV_IMPLICIT    1
+#define CONV_STATIC      2
+#define CONV_CONST       4
+#define CONV_REINTERPRET 8
+#define CONV_PRIVATE	 16
+/* #define CONV_NONCONVERTING 32 */
+#define CONV_FORCE_TEMP  64
+#define CONV_OLD_CONVERT (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
+			  | CONV_REINTERPRET)
+#define CONV_C_CAST      (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
+			  | CONV_REINTERPRET | CONV_PRIVATE | CONV_FORCE_TEMP)
+
+/* Used by build_expr_type_conversion to indicate which types are
+   acceptable as arguments to the expression under consideration.  */
+
+#define WANT_INT	1 /* integer types, including bool */
+#define WANT_FLOAT	2 /* floating point types */
+#define WANT_ENUM	4 /* enumerated types */
+#define WANT_POINTER	8 /* pointer types */
+#define WANT_NULL      16 /* null pointer constant */
+#define WANT_VECTOR_OR_COMPLEX 32 /* vector or complex types */
+#define WANT_ARITH	(WANT_INT | WANT_FLOAT | WANT_VECTOR_OR_COMPLEX)
+
+/* Used with comptypes, and related functions, to guide type
+   comparison.  */
+
+#define COMPARE_STRICT	      0 /* Just check if the types are the
+				   same.  */
+#define COMPARE_BASE	      1 /* Check to see if the second type is
+				   derived from the first.  */
+#define COMPARE_DERIVED	      2 /* Like COMPARE_BASE, but in
+				   reverse.  */
+#define COMPARE_REDECLARATION 4 /* The comparison is being done when
+				   another declaration of an existing
+				   entity is seen.  */
+#define COMPARE_STRUCTURAL    8 /* The comparison is intended to be
+				   structural. The actual comparison
+				   will be identical to
+				   COMPARE_STRICT.  */
+
+/* Used with push_overloaded_decl.  */
+#define PUSH_GLOBAL	     0  /* Push the DECL into namespace scope,
+				   regardless of the current scope.  */
+#define PUSH_LOCAL	     1  /* Push the DECL into the current
+				   scope.  */
+#define PUSH_USING	     2  /* We are pushing this DECL as the
+				   result of a using declaration.  */
+
+/* Used with start function.  */
+#define SF_DEFAULT	     0  /* No flags.  */
+#define SF_PRE_PARSED	     1  /* The function declaration has
+				   already been parsed.  */
+#define SF_INCLASS_INLINE    2  /* The function is an inline, defined
+				   in the class body.  */
+
+/* Used with start_decl's initialized parameter.  */
+#define SD_UNINITIALIZED     0
+#define SD_INITIALIZED       1
+#define SD_DEFAULTED         2
+#define SD_DELETED           3
+
+/* Returns nonzero iff TYPE1 and TYPE2 are the same type, or if TYPE2
+   is derived from TYPE1, or if TYPE2 is a pointer (reference) to a
+   class derived from the type pointed to (referred to) by TYPE1.  */
+#define same_or_base_type_p(TYPE1, TYPE2) \
+  comptypes ((TYPE1), (TYPE2), COMPARE_BASE)
+
+/* These macros are used to access a TEMPLATE_PARM_INDEX.  */
+#define TEMPLATE_PARM_INDEX_CAST(NODE) \
+	((template_parm_index*)TEMPLATE_PARM_INDEX_CHECK (NODE))
+#define TEMPLATE_PARM_IDX(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->index)
+#define TEMPLATE_PARM_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->level)
+#define TEMPLATE_PARM_DESCENDANTS(NODE) (TREE_CHAIN (NODE))
+#define TEMPLATE_PARM_ORIG_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->orig_level)
+#define TEMPLATE_PARM_DECL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->decl)
+#define TEMPLATE_PARM_PARAMETER_PACK(NODE) \
+  (TREE_LANG_FLAG_0 (TEMPLATE_PARM_INDEX_CHECK (NODE)))
+
+/* These macros are for accessing the fields of TEMPLATE_TYPE_PARM,
+   TEMPLATE_TEMPLATE_PARM and BOUND_TEMPLATE_TEMPLATE_PARM nodes.  */
+#define TEMPLATE_TYPE_PARM_INDEX(NODE)					\
+  (TYPE_VALUES_RAW (TREE_CHECK3 ((NODE), TEMPLATE_TYPE_PARM,		\
+				 TEMPLATE_TEMPLATE_PARM,		\
+				 BOUND_TEMPLATE_TEMPLATE_PARM)))
+#define TEMPLATE_TYPE_IDX(NODE) \
+  (TEMPLATE_PARM_IDX (TEMPLATE_TYPE_PARM_INDEX (NODE)))
+#define TEMPLATE_TYPE_LEVEL(NODE) \
+  (TEMPLATE_PARM_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
+#define TEMPLATE_TYPE_ORIG_LEVEL(NODE) \
+  (TEMPLATE_PARM_ORIG_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
+#define TEMPLATE_TYPE_DECL(NODE) \
+  (TEMPLATE_PARM_DECL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
+#define TEMPLATE_TYPE_PARAMETER_PACK(NODE) \
+  (TEMPLATE_PARM_PARAMETER_PACK (TEMPLATE_TYPE_PARM_INDEX (NODE)))
+
+/* True iff this TEMPLATE_TYPE_PARM represents decltype(auto).  */
+#define AUTO_IS_DECLTYPE(NODE) \
+  (TYPE_LANG_FLAG_5 (TEMPLATE_TYPE_PARM_CHECK (NODE)))
+
+/* These constants can used as bit flags in the process of tree formatting.
+
+   TFF_PLAIN_IDENTIFIER: unqualified part of a name.
+   TFF_SCOPE: include the class and namespace scope of the name.
+   TFF_CHASE_TYPEDEF: print the original type-id instead of the typedef-name.
+   TFF_DECL_SPECIFIERS: print decl-specifiers.
+   TFF_CLASS_KEY_OR_ENUM: precede a class-type name (resp. enum name) with
+       a class-key (resp. `enum').
+   TFF_RETURN_TYPE: include function return type.
+   TFF_FUNCTION_DEFAULT_ARGUMENTS: include function default parameter values.
+   TFF_EXCEPTION_SPECIFICATION: show function exception specification.
+   TFF_TEMPLATE_HEADER: show the template<...> header in a
+       template-declaration.
+   TFF_TEMPLATE_NAME: show only template-name.
+   TFF_EXPR_IN_PARENS: parenthesize expressions.
+   TFF_NO_FUNCTION_ARGUMENTS: don't show function arguments.
+   TFF_UNQUALIFIED_NAME: do not print the qualifying scope of the
+       top-level entity.
+   TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS: do not omit template arguments
+       identical to their defaults.
+   TFF_NO_TEMPLATE_BINDINGS: do not print information about the template
+       arguments for a function template specialization.  */
+
+#define TFF_PLAIN_IDENTIFIER			(0)
+#define TFF_SCOPE				(1)
+#define TFF_CHASE_TYPEDEF			(1 << 1)
+#define TFF_DECL_SPECIFIERS			(1 << 2)
+#define TFF_CLASS_KEY_OR_ENUM			(1 << 3)
+#define TFF_RETURN_TYPE				(1 << 4)
+#define TFF_FUNCTION_DEFAULT_ARGUMENTS		(1 << 5)
+#define TFF_EXCEPTION_SPECIFICATION		(1 << 6)
+#define TFF_TEMPLATE_HEADER			(1 << 7)
+#define TFF_TEMPLATE_NAME			(1 << 8)
+#define TFF_EXPR_IN_PARENS			(1 << 9)
+#define TFF_NO_FUNCTION_ARGUMENTS		(1 << 10)
+#define TFF_UNQUALIFIED_NAME			(1 << 11)
+#define TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS	(1 << 12)
+#define TFF_NO_TEMPLATE_BINDINGS		(1 << 13)
+
+/* Returns the TEMPLATE_DECL associated to a TEMPLATE_TEMPLATE_PARM
+   node.  */
+#define TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL(NODE)	\
+  ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM)	\
+   ? TYPE_TI_TEMPLATE (NODE)				\
+   : TYPE_NAME (NODE))
+
+/* in lex.c  */
+
+extern void init_reswords (void);
+
+typedef struct GTY(()) operator_name_info_t {
+  /* The IDENTIFIER_NODE for the operator.  */
+  tree identifier;
+  /* The name of the operator.  */
+  const char *name;
+  /* The mangled name of the operator.  */
+  const char *mangled_name;
+  /* The arity of the operator.  */
+  int arity;
+} operator_name_info_t;
+
+/* A mapping from tree codes to operator name information.  */
+extern GTY(()) operator_name_info_t operator_name_info
+  [(int) MAX_TREE_CODES];
+/* Similar, but for assignment operators.  */
+extern GTY(()) operator_name_info_t assignment_operator_name_info
+  [(int) MAX_TREE_CODES];
+
+/* A type-qualifier, or bitmask therefore, using the TYPE_QUAL
+   constants.  */
+
+typedef int cp_cv_quals;
+
+/* Non-static member functions have an optional virt-specifier-seq.
+   There is a VIRT_SPEC value for each virt-specifier.
+   They can be combined by bitwise-or to form the complete set of
+   virt-specifiers for a member function.  */
+enum virt_specifier
+  {
+    VIRT_SPEC_UNSPECIFIED = 0x0,
+    VIRT_SPEC_FINAL       = 0x1,
+    VIRT_SPEC_OVERRIDE    = 0x2
+  };
+
+/* A type-qualifier, or bitmask therefore, using the VIRT_SPEC
+   constants.  */
+
+typedef int cp_virt_specifiers;
+
+/* Wherever there is a function-cv-qual, there could also be a ref-qualifier:
+
+   [dcl.fct]
+   The return type, the parameter-type-list, the ref-qualifier, and
+   the cv-qualifier-seq, but not the default arguments or the exception
+   specification, are part of the function type.
+
+   REF_QUAL_NONE    Ordinary member function with no ref-qualifier
+   REF_QUAL_LVALUE  Member function with the &-ref-qualifier
+   REF_QUAL_RVALUE  Member function with the &&-ref-qualifier */
+
+enum cp_ref_qualifier {
+  REF_QUAL_NONE = 0,
+  REF_QUAL_LVALUE = 1,
+  REF_QUAL_RVALUE = 2
+};
+
+/* A storage class.  */
+
+typedef enum cp_storage_class {
+  /* sc_none must be zero so that zeroing a cp_decl_specifier_seq
+     sets the storage_class field to sc_none.  */
+  sc_none = 0,
+  sc_auto,
+  sc_register,
+  sc_static,
+  sc_extern,
+  sc_mutable
+} cp_storage_class;
+
+/* An individual decl-specifier.  This is used to index the array of
+   locations for the declspecs in struct cp_decl_specifier_seq
+   below.  */
+
+typedef enum cp_decl_spec {
+  ds_first,
+  ds_signed = ds_first,
+  ds_unsigned,
+  ds_short,
+  ds_long,
+  ds_const,
+  ds_volatile,
+  ds_restrict,
+  ds_inline,
+  ds_virtual,
+  ds_explicit,
+  ds_friend,
+  ds_typedef,
+  ds_alias,
+  ds_constexpr,
+  ds_complex,
+  ds_thread,
+  ds_type_spec,
+  ds_redefined_builtin_type_spec,
+  ds_attribute,
+  ds_std_attribute,
+  ds_storage_class,
+  ds_long_long,
+  ds_last /* This enumerator must always be the last one.  */
+} cp_decl_spec;
+
+/* A decl-specifier-seq.  */
+
+typedef struct cp_decl_specifier_seq {
+  /* An array of locations for the declaration sepecifiers, indexed by
+     enum cp_decl_spec_word.  */
+  source_location locations[ds_last];
+  /* The primary type, if any, given by the decl-specifier-seq.
+     Modifiers, like "short", "const", and "unsigned" are not
+     reflected here.  This field will be a TYPE, unless a typedef-name
+     was used, in which case it will be a TYPE_DECL.  */
+  tree type;
+  /* The attributes, if any, provided with the specifier sequence.  */
+  tree attributes;
+  /* The c++11 attributes that follows the type specifier.  */
+  tree std_attributes;
+  /* If non-NULL, a built-in type that the user attempted to redefine
+     to some other type.  */
+  tree redefined_builtin_type;
+  /* The storage class specified -- or sc_none if no storage class was
+     explicitly specified.  */
+  cp_storage_class storage_class;
+  /* True iff TYPE_SPEC defines a class or enum.  */
+  BOOL_BITFIELD type_definition_p : 1;
+  /* True iff multiple types were (erroneously) specified for this
+     decl-specifier-seq.  */
+  BOOL_BITFIELD multiple_types_p : 1;
+  /* True iff multiple storage classes were (erroneously) specified
+     for this decl-specifier-seq or a combination of a storage class
+     with a typedef specifier.  */
+  BOOL_BITFIELD conflicting_specifiers_p : 1;
+  /* True iff at least one decl-specifier was found.  */
+  BOOL_BITFIELD any_specifiers_p : 1;
+  /* True iff at least one type-specifier was found.  */
+  BOOL_BITFIELD any_type_specifiers_p : 1;
+  /* True iff "int" was explicitly provided.  */
+  BOOL_BITFIELD explicit_int_p : 1;
+  /* True iff "__int128" was explicitly provided.  */
+  BOOL_BITFIELD explicit_int128_p : 1;
+  /* True iff "char" was explicitly provided.  */
+  BOOL_BITFIELD explicit_char_p : 1;
+  /* True iff ds_thread is set for __thread, not thread_local.  */
+  BOOL_BITFIELD gnu_thread_keyword_p : 1;
+} cp_decl_specifier_seq;
+
+/* The various kinds of declarators.  */
+
+typedef enum cp_declarator_kind {
+  cdk_id,
+  cdk_function,
+  cdk_array,
+  cdk_pointer,
+  cdk_reference,
+  cdk_ptrmem,
+  cdk_error
+} cp_declarator_kind;
+
+/* A declarator.  */
+
+typedef struct cp_declarator cp_declarator;
+
+typedef struct cp_parameter_declarator cp_parameter_declarator;
+
+/* A parameter, before it has been semantically analyzed.  */
+struct cp_parameter_declarator {
+  /* The next parameter, or NULL_TREE if none.  */
+  cp_parameter_declarator *next;
+  /* The decl-specifiers-seq for the parameter.  */
+  cp_decl_specifier_seq decl_specifiers;
+  /* The declarator for the parameter.  */
+  cp_declarator *declarator;
+  /* The default-argument expression, or NULL_TREE, if none.  */
+  tree default_argument;
+  /* True iff this is the first parameter in the list and the
+     parameter sequence ends with an ellipsis.  */
+  bool ellipsis_p;
+};
+
+/* A declarator.  */
+struct cp_declarator {
+  /* The kind of declarator.  */
+  ENUM_BITFIELD (cp_declarator_kind) kind : 4;
+  /* Whether we parsed an ellipsis (`...') just before the declarator,
+     to indicate this is a parameter pack.  */
+  BOOL_BITFIELD parameter_pack_p : 1;
+  location_t id_loc; /* Currently only set for cdk_id and cdk_function. */
+  /* GNU Attributes that apply to this declarator.  If the declarator
+     is a pointer or a reference, these attribute apply to the type
+     pointed to.  */
+  tree attributes;
+  /* Standard C++11 attributes that apply to this declarator.  If the
+     declarator is a pointer or a reference, these attributes apply
+     to the pointer, rather than to the type pointed to.  */
+  tree std_attributes;
+  /* For all but cdk_id and cdk_error, the contained declarator.  For
+     cdk_id and cdk_error, guaranteed to be NULL.  */
+  cp_declarator *declarator;
+  union {
+    /* For identifiers.  */
+    struct {
+      /* If non-NULL, the qualifying scope (a NAMESPACE_DECL or
+	 *_TYPE) for this identifier.  */
+      tree qualifying_scope;
+      /* The unqualified name of the entity -- an IDENTIFIER_NODE,
+	 BIT_NOT_EXPR, or TEMPLATE_ID_EXPR.  */
+      tree unqualified_name;
+      /* If this is the name of a function, what kind of special
+	 function (if any).  */
+      special_function_kind sfk;
+    } id;
+    /* For functions.  */
+    struct {
+      /* The parameters to the function as a TREE_LIST of decl/default.  */
+      tree parameters;
+      /* The cv-qualifiers for the function.  */
+      cp_cv_quals qualifiers;
+      /* The virt-specifiers for the function.  */
+      cp_virt_specifiers virt_specifiers;
+      /* The ref-qualifier for the function.  */
+      cp_ref_qualifier ref_qualifier;
+      /* The exception-specification for the function.  */
+      tree exception_specification;
+      /* The late-specified return type, if any.  */
+      tree late_return_type;
+    } function;
+    /* For arrays.  */
+    struct {
+      /* The bounds to the array.  */
+      tree bounds;
+    } array;
+    /* For cdk_pointer and cdk_ptrmem.  */
+    struct {
+      /* The cv-qualifiers for the pointer.  */
+      cp_cv_quals qualifiers;
+      /* For cdk_ptrmem, the class type containing the member.  */
+      tree class_type;
+    } pointer;
+    /* For cdk_reference */
+    struct {
+      /* The cv-qualifiers for the reference.  These qualifiers are
+         only used to diagnose ill-formed code.  */
+      cp_cv_quals qualifiers;
+      /* Whether this is an rvalue reference */
+      bool rvalue_ref;
+    } reference;
+  } u;
+};
+
+/* A level of template instantiation.  */
+struct GTY((chain_next ("%h.next"))) tinst_level {
+  /* The immediately deeper level in the chain.  */
+  struct tinst_level *next;
+
+  /* The original node.  Can be either a DECL (for a function or static
+     data member) or a TYPE (for a class), depending on what we were
+     asked to instantiate.  */
+  tree decl;
+
+  /* The location where the template is instantiated.  */
+  location_t locus;
+
+  /* errorcount+sorrycount when we pushed this level.  */
+  int errors;
+
+  /* True if the location is in a system header.  */
+  bool in_system_header_p;
+};
+
+bool decl_spec_seq_has_spec_p (const cp_decl_specifier_seq *, cp_decl_spec);
+
+/* Return the type of the `this' parameter of FNTYPE.  */
+
+inline tree
+type_of_this_parm (const_tree fntype)
+{
+  function_args_iterator iter;
+  gcc_assert (TREE_CODE (fntype) == METHOD_TYPE);
+  function_args_iter_init (&iter, fntype);
+  return function_args_iter_cond (&iter);
+}
+
+/* Return the class of the `this' parameter of FNTYPE.  */
+
+inline tree
+class_of_this_parm (const_tree fntype)
+{
+  return TREE_TYPE (type_of_this_parm (fntype));
+}
+
+/* A parameter list indicating for a function with no parameters,
+   e.g  "int f(void)".  */
+extern cp_parameter_declarator *no_parameters;
+
+/* True if we saw "#pragma GCC java_exceptions".  */
+extern bool pragma_java_exceptions;
+
+/* in call.c */
+extern bool check_dtor_name			(tree, tree);
+bool magic_varargs_p                            (tree);
+
+extern tree build_conditional_expr		(location_t, tree, tree, tree, 
+                                                 tsubst_flags_t);
+extern tree build_addr_func			(tree, tsubst_flags_t);
+extern void set_flags_from_callee		(tree);
+extern tree build_call_a			(tree, int, tree*);
+extern tree build_call_n			(tree, int, ...);
+extern bool null_ptr_cst_p			(tree);
+extern bool null_member_pointer_value_p		(tree);
+extern bool sufficient_parms_p			(const_tree);
+extern tree type_decays_to			(tree);
+extern tree build_user_type_conversion		(tree, tree, int,
+						 tsubst_flags_t);
+extern tree build_new_function_call		(tree, vec<tree, va_gc> **, bool, 
+						 tsubst_flags_t);
+extern tree build_operator_new_call		(tree, vec<tree, va_gc> **, tree *,
+						 tree *, tree, tree *,
+						 tsubst_flags_t);
+extern tree build_new_method_call		(tree, tree, vec<tree, va_gc> **,
+						 tree, int, tree *,
+						 tsubst_flags_t);
+extern tree build_special_member_call		(tree, tree, vec<tree, va_gc> **,
+						 tree, int, tsubst_flags_t);
+extern tree build_new_op			(location_t, enum tree_code,
+						 int, tree, tree, tree, tree *,
+						 tsubst_flags_t);
+extern tree build_op_call			(tree, vec<tree, va_gc> **,
+						 tsubst_flags_t);
+extern tree build_op_delete_call		(enum tree_code, tree, tree,
+						 bool, tree, tree,
+						 tsubst_flags_t);
+extern bool can_convert				(tree, tree, tsubst_flags_t);
+extern bool can_convert_standard		(tree, tree, tsubst_flags_t);
+extern bool can_convert_arg			(tree, tree, tree, int,
+						 tsubst_flags_t);
+extern bool can_convert_arg_bad			(tree, tree, tree, int,
+						 tsubst_flags_t);
+extern bool enforce_access			(tree, tree, tree,
+						 tsubst_flags_t);
+extern void push_defarg_context			(tree);
+extern void pop_defarg_context			(void);
+extern tree convert_default_arg			(tree, tree, tree, int,
+						 tsubst_flags_t);
+extern tree convert_arg_to_ellipsis		(tree, tsubst_flags_t);
+extern tree build_x_va_arg			(source_location, tree, tree);
+extern tree cxx_type_promotes_to		(tree);
+extern tree type_passed_as			(tree);
+extern tree convert_for_arg_passing		(tree, tree, tsubst_flags_t);
+extern bool is_properly_derived_from		(tree, tree);
+extern tree initialize_reference		(tree, tree, int,
+						 tsubst_flags_t);
+extern tree extend_ref_init_temps		(tree, tree, vec<tree, va_gc>**);
+extern tree make_temporary_var_for_ref_to_temp	(tree, tree);
+extern bool type_has_extended_temps		(tree);
+extern tree strip_top_quals			(tree);
+extern bool reference_related_p			(tree, tree);
+extern tree perform_implicit_conversion		(tree, tree, tsubst_flags_t);
+extern tree perform_implicit_conversion_flags	(tree, tree, tsubst_flags_t, int);
+extern tree build_integral_nontype_arg_conv	(tree, tree, tsubst_flags_t);
+extern tree perform_direct_initialization_if_possible (tree, tree, bool,
+                                                       tsubst_flags_t);
+extern tree in_charge_arg_for_name		(tree);
+extern tree build_cxx_call			(tree, int, tree *,
+						 tsubst_flags_t);
+extern bool is_std_init_list			(tree);
+extern bool is_list_ctor			(tree);
+#ifdef ENABLE_CHECKING
+extern void validate_conversion_obstack		(void);
+#endif /* ENABLE_CHECKING */
+extern void mark_versions_used			(tree);
+extern tree get_function_version_dispatcher	(tree);
+
+/* in class.c */
+extern tree build_vfield_ref			(tree, tree);
+extern tree build_base_path			(enum tree_code, tree,
+						 tree, int, tsubst_flags_t);
+extern tree convert_to_base			(tree, tree, bool, bool,
+						 tsubst_flags_t);
+extern tree convert_to_base_statically		(tree, tree);
+extern tree build_vtbl_ref			(tree, tree);
+extern tree build_vfn_ref			(tree, tree);
+extern tree get_vtable_decl			(tree, int);
+extern void resort_type_method_vec		(void *, void *,
+						 gt_pointer_operator, void *);
+extern bool add_method				(tree, tree, tree);
+extern bool currently_open_class		(tree);
+extern tree currently_open_derived_class	(tree);
+extern tree current_nonlambda_class_type	(void);
+extern tree finish_struct			(tree, tree);
+extern void finish_struct_1			(tree);
+extern int resolves_to_fixed_type_p		(tree, int *);
+extern void init_class_processing		(void);
+extern int is_empty_class			(tree);
+extern bool is_really_empty_class		(tree);
+extern void pushclass				(tree);
+extern void popclass				(void);
+extern void push_nested_class			(tree);
+extern void pop_nested_class			(void);
+extern int current_lang_depth			(void);
+extern void push_lang_context			(tree);
+extern void pop_lang_context			(void);
+extern tree instantiate_type			(tree, tree, tsubst_flags_t);
+extern void print_class_statistics		(void);
+extern void build_self_reference		(void);
+extern int same_signature_p			(const_tree, const_tree);
+extern void maybe_add_class_template_decl_list	(tree, tree, int);
+extern void unreverse_member_declarations	(tree);
+extern void invalidate_class_lookup_cache	(void);
+extern void maybe_note_name_used_in_class	(tree, tree);
+extern void note_name_declared_in_class		(tree, tree);
+extern tree get_vtbl_decl_for_binfo		(tree);
+extern void debug_class				(tree);
+extern void debug_thunks			(tree);
+extern void set_linkage_according_to_type	(tree, tree);
+extern void determine_key_method		(tree);
+extern void check_for_override			(tree, tree);
+extern void push_class_stack			(void);
+extern void pop_class_stack			(void);
+extern bool type_has_user_nondefault_constructor (tree);
+extern tree in_class_defaulted_default_constructor (tree);
+extern bool user_provided_p			(tree);
+extern bool type_has_user_provided_constructor  (tree);
+extern bool type_has_user_provided_default_constructor (tree);
+extern bool vbase_has_user_provided_move_assign (tree);
+extern tree default_init_uninitialized_part (tree);
+extern bool trivial_default_constructor_is_constexpr (tree);
+extern bool type_has_constexpr_default_constructor (tree);
+extern bool type_has_virtual_destructor		(tree);
+extern bool type_has_move_constructor		(tree);
+extern bool type_has_move_assign		(tree);
+extern bool type_has_user_declared_move_constructor (tree);
+extern bool type_has_user_declared_move_assign(tree);
+extern bool type_build_ctor_call		(tree);
+extern bool type_build_dtor_call		(tree);
+extern void explain_non_literal_class		(tree);
+extern void defaulted_late_check		(tree);
+extern bool defaultable_fn_check		(tree);
+extern void fixup_type_variants			(tree);
+extern void fixup_attribute_variants		(tree);
+extern tree* decl_cloned_function_p		(const_tree, bool);
+extern void clone_function_decl			(tree, int);
+extern void adjust_clone_args			(tree);
+extern void deduce_noexcept_on_destructor       (tree);
+extern void insert_late_enum_def_into_classtype_sorted_fields (tree, tree);
+extern bool uniquely_derived_from_p             (tree, tree);
+extern bool publicly_uniquely_derived_p         (tree, tree);
+extern tree common_enclosing_class		(tree, tree);
+
+/* in cvt.c */
+extern tree convert_to_reference		(tree, tree, int, int, tree,
+						 tsubst_flags_t);
+extern tree convert_from_reference		(tree);
+extern tree force_rvalue			(tree, tsubst_flags_t);
+extern tree ocp_convert				(tree, tree, int, int,
+						 tsubst_flags_t);
+extern tree cp_convert				(tree, tree, tsubst_flags_t);
+extern tree cp_convert_and_check                (tree, tree, tsubst_flags_t);
+extern tree cp_fold_convert			(tree, tree);
+extern tree convert_to_void			(tree, impl_conv_void,
+                                 		 tsubst_flags_t);
+extern tree convert_force			(tree, tree, int,
+						 tsubst_flags_t);
+extern tree build_expr_type_conversion		(int, tree, bool);
+extern tree type_promotes_to			(tree);
+extern tree perform_qualification_conversions	(tree, tree);
+
+/* in name-lookup.c */
+extern tree pushdecl				(tree);
+extern tree pushdecl_maybe_friend		(tree, bool);
+extern void maybe_push_cleanup_level		(tree);
+extern tree pushtag				(tree, tree, tag_scope);
+extern tree make_anon_name			(void);
+extern tree pushdecl_top_level_maybe_friend	(tree, bool);
+extern tree pushdecl_top_level_and_finish	(tree, tree);
+extern tree check_for_out_of_scope_variable	(tree);
+extern void dump				(cp_binding_level &ref);
+extern void dump				(cp_binding_level *ptr);
+extern void print_other_binding_stack		(cp_binding_level *);
+extern tree maybe_push_decl			(tree);
+extern tree current_decl_namespace		(void);
+
+/* decl.c */
+extern tree poplevel				(int, int, int);
+extern void cxx_init_decl_processing		(void);
+enum cp_tree_node_structure_enum cp_tree_node_structure
+						(union lang_tree_node *);
+extern void finish_scope			(void);
+extern void push_switch				(tree);
+extern void pop_switch				(void);
+extern tree make_lambda_name			(void);
+extern int decls_match				(tree, tree);
+extern tree duplicate_decls			(tree, tree, bool);
+extern tree declare_local_label			(tree);
+extern tree define_label			(location_t, tree);
+extern void check_goto				(tree);
+extern bool check_omp_return			(void);
+extern tree make_typename_type			(tree, tree, enum tag_types, tsubst_flags_t);
+extern tree make_unbound_class_template		(tree, tree, tree, tsubst_flags_t);
+extern tree build_library_fn_ptr		(const char *, tree, int);
+extern tree build_cp_library_fn_ptr		(const char *, tree, int);
+extern tree push_library_fn			(tree, tree, tree, int);
+extern tree push_void_library_fn		(tree, tree, int);
+extern tree push_throw_library_fn		(tree, tree);
+extern void warn_misplaced_attr_for_class_type  (source_location location,
+						 tree class_type);
+extern tree check_tag_decl			(cp_decl_specifier_seq *, bool);
+extern tree shadow_tag				(cp_decl_specifier_seq *);
+extern tree groktypename			(cp_decl_specifier_seq *, const cp_declarator *, bool);
+extern tree start_decl				(const cp_declarator *, cp_decl_specifier_seq *, int, tree, tree, tree *);
+extern void start_decl_1			(tree, bool);
+extern bool check_array_initializer		(tree, tree, tree);
+extern void cp_finish_decl			(tree, tree, bool, tree, int);
+extern int cp_complete_array_type		(tree *, tree, bool);
+extern int cp_complete_array_type_or_error	(tree *, tree, bool, tsubst_flags_t);
+extern tree build_ptrmemfunc_type		(tree);
+extern tree build_ptrmem_type			(tree, tree);
+/* the grokdeclarator prototype is in decl.h */
+extern tree build_this_parm			(tree, cp_cv_quals);
+extern int copy_fn_p				(const_tree);
+extern bool move_fn_p                           (const_tree);
+extern bool move_signature_fn_p                 (const_tree);
+extern tree get_scope_of_declarator		(const cp_declarator *);
+extern void grok_special_member_properties	(tree);
+extern int grok_ctor_properties			(const_tree, const_tree);
+extern bool grok_op_properties			(tree, bool);
+extern tree xref_tag				(enum tag_types, tree, tag_scope, bool);
+extern tree xref_tag_from_type			(tree, tree, tag_scope);
+extern bool xref_basetypes			(tree, tree);
+extern tree start_enum				(tree, tree, tree, bool, bool *);
+extern void finish_enum_value_list		(tree);
+extern void finish_enum				(tree);
+extern void build_enumerator			(tree, tree, tree, location_t);
+extern tree lookup_enumerator			(tree, tree);
+extern bool start_preparsed_function		(tree, tree, int);
+extern bool start_function			(cp_decl_specifier_seq *,
+						 const cp_declarator *, tree);
+extern tree begin_function_body			(void);
+extern void finish_function_body		(tree);
+extern tree outer_curly_brace_block		(tree);
+extern tree finish_function			(int);
+extern tree grokmethod				(cp_decl_specifier_seq *, const cp_declarator *, tree);
+extern void maybe_register_incomplete_var	(tree);
+extern void maybe_commonize_var			(tree);
+extern void complete_vars			(tree);
+extern tree static_fn_type			(tree);
+extern void revert_static_member_fn		(tree);
+extern void fixup_anonymous_aggr		(tree);
+extern tree compute_array_index_type		(tree, tree, tsubst_flags_t);
+extern tree check_default_argument		(tree, tree, tsubst_flags_t);
+typedef int (*walk_namespaces_fn)		(tree, void *);
+extern int walk_namespaces			(walk_namespaces_fn,
+						 void *);
+extern int wrapup_globals_for_namespace		(tree, void *);
+extern tree create_implicit_typedef		(tree, tree);
+extern int local_variable_p			(const_tree);
+extern tree register_dtor_fn			(tree);
+extern tmpl_spec_kind current_tmpl_spec_kind	(int);
+extern tree cp_fname_init			(const char *, tree *);
+extern tree cxx_builtin_function		(tree decl);
+extern tree cxx_builtin_function_ext_scope	(tree decl);
+extern tree check_elaborated_type_specifier	(enum tag_types, tree, bool);
+extern void warn_extern_redeclared_static	(tree, tree);
+extern tree cxx_comdat_group			(tree);
+extern bool cp_missing_noreturn_ok_p		(tree);
+extern void initialize_artificial_var		(tree, vec<constructor_elt, va_gc> *);
+extern tree check_var_type			(tree, tree);
+extern tree reshape_init                        (tree, tree, tsubst_flags_t);
+extern tree next_initializable_field (tree);
+extern tree fndecl_declared_return_type		(tree);
+extern bool undeduced_auto_decl			(tree);
+extern void require_deduced_type		(tree);
+
+extern bool defer_mark_used_calls;
+extern GTY(()) vec<tree, va_gc> *deferred_mark_used_calls;
+extern tree finish_case_label			(location_t, tree, tree);
+extern tree cxx_maybe_build_cleanup		(tree, tsubst_flags_t);
+
+/* in decl2.c */
+extern bool check_java_method			(tree);
+extern tree build_memfn_type			(tree, tree, cp_cv_quals, cp_ref_qualifier);
+extern tree build_pointer_ptrmemfn_type	(tree);
+extern tree change_return_type			(tree, tree);
+extern void maybe_retrofit_in_chrg		(tree);
+extern void maybe_make_one_only			(tree);
+extern bool vague_linkage_p			(tree);
+extern void grokclassfn				(tree, tree,
+						 enum overload_flags);
+extern tree grok_array_decl			(location_t, tree, tree, bool);
+extern tree delete_sanity			(tree, tree, bool, int, tsubst_flags_t);
+extern tree check_classfn			(tree, tree, tree);
+extern void check_member_template		(tree);
+extern tree grokfield (const cp_declarator *, cp_decl_specifier_seq *,
+		       tree, bool, tree, tree);
+extern tree grokbitfield (const cp_declarator *, cp_decl_specifier_seq *,
+			  tree, tree);
+extern tree cp_reconstruct_complex_type		(tree, tree);
+extern bool attributes_naming_typedef_ok	(tree);
+extern void cplus_decl_attributes		(tree *, tree, int);
+extern void finish_anon_union			(tree);
+extern void cp_write_global_declarations	(void);
+extern tree coerce_new_type			(tree);
+extern tree coerce_delete_type			(tree);
+extern void comdat_linkage			(tree);
+extern void determine_visibility		(tree);
+extern void constrain_class_visibility		(tree);
+extern void reset_type_linkage			(tree);
+extern void tentative_decl_linkage		(tree);
+extern void import_export_decl			(tree);
+extern tree build_cleanup			(tree);
+extern tree build_offset_ref_call_from_tree	(tree, vec<tree, va_gc> **,
+						 tsubst_flags_t);
+extern bool decl_constant_var_p			(tree);
+extern bool decl_maybe_constant_var_p		(tree);
+extern void no_linkage_error			(tree);
+extern void check_default_args			(tree);
+extern bool mark_used				(tree);
+extern bool mark_used			        (tree, tsubst_flags_t);
+extern void finish_static_data_member_decl	(tree, tree, bool, tree, int);
+extern tree cp_build_parm_decl			(tree, tree);
+extern tree get_guard				(tree);
+extern tree get_guard_cond			(tree);
+extern tree set_guard				(tree);
+extern tree get_tls_wrapper_fn			(tree);
+extern void mark_needed				(tree);
+extern bool decl_needed_p			(tree);
+extern void note_vague_linkage_fn		(tree);
+extern tree build_artificial_parm		(tree, tree);
+extern bool possibly_inlined_p			(tree);
+extern int parm_index                           (tree);
+extern tree vtv_start_verification_constructor_init_function (void);
+extern tree vtv_finish_verification_constructor_init_function (tree);
+extern bool cp_omp_mappable_type		(tree);
+
+/* in error.c */
+extern void init_error				(void);
+extern const char *type_as_string		(tree, int);
+extern const char *type_as_string_translate	(tree, int);
+extern const char *decl_as_string		(tree, int);
+extern const char *decl_as_string_translate	(tree, int);
+extern const char *decl_as_dwarf_string		(tree, int);
+extern const char *expr_as_string		(tree, int);
+extern const char *lang_decl_name		(tree, int, bool);
+extern const char *lang_decl_dwarf_name		(tree, int, bool);
+extern const char *language_to_string		(enum languages);
+extern const char *class_key_or_enum_as_string	(tree);
+extern void print_instantiation_context		(void);
+extern void maybe_warn_variadic_templates       (void);
+extern void maybe_warn_cpp0x			(cpp0x_warn_str str);
+extern bool pedwarn_cxx98                       (location_t, int, const char *, ...) ATTRIBUTE_GCC_DIAG(3,4);
+extern location_t location_of                   (tree);
+extern void qualified_name_lookup_error		(tree, tree, tree,
+						 location_t);
+
+/* in except.c */
+extern void init_exception_processing		(void);
+extern tree expand_start_catch_block		(tree);
+extern void expand_end_catch_block		(void);
+extern tree build_exc_ptr			(void);
+extern tree build_throw				(tree);
+extern int nothrow_libfn_p			(const_tree);
+extern void check_handlers			(tree);
+extern tree finish_noexcept_expr		(tree, tsubst_flags_t);
+extern bool expr_noexcept_p			(tree, tsubst_flags_t);
+extern void perform_deferred_noexcept_checks	(void);
+extern bool nothrow_spec_p			(const_tree);
+extern bool type_noexcept_p			(const_tree);
+extern bool type_throw_all_p			(const_tree);
+extern tree build_noexcept_spec			(tree, int);
+extern void choose_personality_routine		(enum languages);
+extern tree build_must_not_throw_expr		(tree,tree);
+extern tree eh_type_info			(tree);
+extern tree begin_eh_spec_block			(void);
+extern void finish_eh_spec_block		(tree, tree);
+extern tree build_eh_type_type			(tree);
+extern tree cp_protect_cleanup_actions		(void);
+extern tree create_try_catch_expr               (tree, tree);
+
+/* in expr.c */
+extern tree cplus_expand_constant		(tree);
+extern tree mark_rvalue_use			(tree);
+extern tree mark_lvalue_use			(tree);
+extern tree mark_type_use			(tree);
+extern void mark_exp_read			(tree);
+
+/* friend.c */
+extern int is_friend				(tree, tree);
+extern void make_friend_class			(tree, tree, bool);
+extern void add_friend				(tree, tree, bool);
+extern tree do_friend				(tree, tree, tree, tree, enum overload_flags, bool);
+
+/* in init.c */
+extern tree expand_member_init			(tree);
+extern void emit_mem_initializers		(tree);
+extern tree build_aggr_init			(tree, tree, int,
+                                                 tsubst_flags_t);
+extern int is_class_type			(tree, int);
+extern tree get_type_value			(tree);
+extern tree build_zero_init			(tree, tree, bool);
+extern tree build_value_init			(tree, tsubst_flags_t);
+extern tree build_value_init_noctor		(tree, tsubst_flags_t);
+extern tree build_offset_ref			(tree, tree, bool,
+						 tsubst_flags_t);
+extern tree throw_bad_array_new_length		(void);
+extern tree throw_bad_array_length		(void);
+extern tree build_new				(vec<tree, va_gc> **, tree, tree,
+						 vec<tree, va_gc> **, int,
+                                                 tsubst_flags_t);
+extern tree get_temp_regvar			(tree, tree);
+extern tree build_vec_init			(tree, tree, tree, bool, int,
+                                                 tsubst_flags_t);
+extern tree build_delete			(tree, tree,
+						 special_function_kind,
+						 int, int, tsubst_flags_t);
+extern void push_base_cleanups			(void);
+extern tree build_vec_delete			(tree, tree,
+						 special_function_kind, int,
+						 tsubst_flags_t);
+extern tree create_temporary_var		(tree);
+extern void initialize_vtbl_ptrs		(tree);
+extern tree build_java_class_ref		(tree);
+extern tree integral_constant_value		(tree);
+extern tree decl_constant_value_safe	        (tree);
+extern int diagnose_uninitialized_cst_or_ref_member (tree, bool, bool);
+extern tree build_vtbl_address                  (tree);
+
+/* in lex.c */
+extern void cxx_dup_lang_specific_decl		(tree);
+extern void yyungetc				(int, int);
+
+extern tree unqualified_name_lookup_error	(tree);
+extern tree unqualified_fn_lookup_error		(tree);
+extern tree build_lang_decl			(enum tree_code, tree, tree);
+extern tree build_lang_decl_loc			(location_t, enum tree_code, tree, tree);
+extern void retrofit_lang_decl			(tree);
+extern tree copy_decl				(tree);
+extern tree copy_type				(tree);
+extern tree cxx_make_type			(enum tree_code);
+extern tree make_class_type			(enum tree_code);
+extern bool cxx_init				(void);
+extern void cxx_finish				(void);
+extern bool in_main_input_context		(void);
+
+/* in method.c */
+extern void init_method				(void);
+extern tree make_thunk				(tree, bool, tree, tree);
+extern void finish_thunk			(tree);
+extern void use_thunk				(tree, bool);
+extern bool trivial_fn_p			(tree);
+extern bool maybe_explain_implicit_delete	(tree);
+extern void explain_implicit_non_constexpr	(tree);
+extern void deduce_inheriting_ctor		(tree);
+extern void synthesize_method			(tree);
+extern tree lazily_declare_fn			(special_function_kind,
+						 tree);
+extern tree skip_artificial_parms_for		(const_tree, tree);
+extern int num_artificial_parms_for		(const_tree);
+extern tree make_alias_for			(tree, tree);
+extern tree get_copy_ctor			(tree, tsubst_flags_t);
+extern tree get_copy_assign			(tree);
+extern tree get_default_ctor			(tree);
+extern tree get_dtor				(tree, tsubst_flags_t);
+extern tree get_inherited_ctor			(tree);
+extern tree locate_ctor				(tree);
+extern tree implicitly_declare_fn               (special_function_kind, tree,
+						 bool, tree, tree);
+
+/* In optimize.c */
+extern bool maybe_clone_body			(tree);
+
+/* in pt.c */
+extern bool check_template_shadow		(tree);
+extern tree get_innermost_template_args		(tree, int);
+extern void maybe_begin_member_template_processing (tree);
+extern void maybe_end_member_template_processing (void);
+extern tree finish_member_template_decl		(tree);
+extern void begin_template_parm_list		(void);
+extern bool begin_specialization		(void);
+extern void reset_specialization		(void);
+extern void end_specialization			(void);
+extern void begin_explicit_instantiation	(void);
+extern void end_explicit_instantiation		(void);
+extern tree check_explicit_specialization	(tree, tree, int, int);
+extern int num_template_headers_for_class	(tree);
+extern void check_template_variable		(tree);
+extern tree make_auto				(void);
+extern tree make_decltype_auto			(void);
+extern tree do_auto_deduction			(tree, tree, tree);
+extern tree type_uses_auto			(tree);
+extern tree type_uses_auto_or_concept		(tree);
+extern void append_type_to_template_for_access_check (tree, tree, tree,
+						      location_t);
+extern tree convert_generic_types_to_packs	(tree, int, int);
+extern tree splice_late_return_type		(tree, tree);
+extern bool is_auto				(const_tree);
+extern bool is_auto_or_concept			(const_tree);
+extern tree process_template_parm		(tree, location_t, tree, 
+						 bool, bool);
+extern tree end_template_parm_list		(tree);
+extern void end_template_decl			(void);
+extern tree maybe_update_decl_type		(tree, tree);
+extern bool check_default_tmpl_args             (tree, tree, bool, bool, int);
+extern tree push_template_decl			(tree);
+extern tree push_template_decl_real		(tree, bool);
+extern tree add_inherited_template_parms	(tree, tree);
+extern bool redeclare_class_template		(tree, tree);
+extern tree lookup_template_class		(tree, tree, tree, tree,
+						 int, tsubst_flags_t);
+extern tree lookup_template_function		(tree, tree);
+extern int uses_template_parms			(tree);
+extern int uses_template_parms_level		(tree, int);
+extern bool in_template_function		(void);
+extern tree instantiate_class_template		(tree);
+extern tree instantiate_template		(tree, tree, tsubst_flags_t);
+extern tree fn_type_unification			(tree, tree, tree,
+						 const tree *, unsigned int,
+						 tree, unification_kind_t, int,
+						 bool, bool);
+extern void mark_decl_instantiated		(tree, int);
+extern int more_specialized_fn			(tree, tree, int);
+extern void do_decl_instantiation		(tree, tree);
+extern void do_type_instantiation		(tree, tree, tsubst_flags_t);
+extern bool always_instantiate_p		(tree);
+extern void maybe_instantiate_noexcept		(tree);
+extern tree instantiate_decl			(tree, int, bool);
+extern int comp_template_parms			(const_tree, const_tree);
+extern bool uses_parameter_packs                (tree);
+extern bool template_parameter_pack_p           (const_tree);
+extern bool function_parameter_pack_p		(const_tree);
+extern bool function_parameter_expanded_from_pack_p (tree, tree);
+extern tree make_pack_expansion                 (tree);
+extern bool check_for_bare_parameter_packs      (tree);
+extern tree build_template_info			(tree, tree);
+extern tree get_template_info			(const_tree);
+extern vec<qualified_typedef_usage_t, va_gc> *get_types_needing_access_check (tree);
+extern int template_class_depth			(tree);
+extern int is_specialization_of			(tree, tree);
+extern bool is_specialization_of_friend		(tree, tree);
+extern tree get_pattern_parm			(tree, tree);
+extern int comp_template_args			(tree, tree);
+extern tree maybe_process_partial_specialization (tree);
+extern tree most_specialized_instantiation	(tree);
+extern void print_candidates			(tree);
+extern void instantiate_pending_templates	(int);
+extern tree tsubst_default_argument		(tree, tree, tree,
+						 tsubst_flags_t);
+extern tree tsubst (tree, tree, tsubst_flags_t, tree);
+extern tree tsubst_copy_and_build		(tree, tree, tsubst_flags_t,
+						 tree, bool, bool);
+extern tree most_general_template		(tree);
+extern tree get_mostly_instantiated_function_type (tree);
+extern int problematic_instantiation_changed	(void);
+extern void record_last_problematic_instantiation (void);
+extern struct tinst_level *current_instantiation(void);
+extern tree maybe_get_template_decl_from_type_decl (tree);
+extern int processing_template_parmlist;
+extern bool dependent_type_p			(tree);
+extern bool dependent_scope_p			(tree);
+extern bool any_dependent_template_arguments_p  (const_tree);
+extern bool dependent_template_p		(tree);
+extern bool dependent_template_id_p		(tree, tree);
+extern bool type_dependent_expression_p		(tree);
+extern bool any_type_dependent_arguments_p      (const vec<tree, va_gc> *);
+extern bool any_type_dependent_elements_p       (const_tree);
+extern bool type_dependent_expression_p_push	(tree);
+extern bool value_dependent_expression_p	(tree);
+extern bool instantiation_dependent_expression_p (tree);
+extern bool any_value_dependent_elements_p      (const_tree);
+extern bool dependent_omp_for_p			(tree, tree, tree, tree);
+extern tree resolve_typename_type		(tree, bool);
+extern tree template_for_substitution		(tree);
+extern tree build_non_dependent_expr		(tree);
+extern void make_args_non_dependent		(vec<tree, va_gc> *);
+extern bool reregister_specialization		(tree, tree, tree);
+extern tree fold_non_dependent_expr		(tree);
+extern tree fold_non_dependent_expr_sfinae	(tree, tsubst_flags_t);
+extern bool alias_type_or_template_p            (tree);
+extern bool alias_template_specialization_p     (const_tree);
+extern bool explicit_class_specialization_p     (tree);
+extern int push_tinst_level                     (tree);
+extern void pop_tinst_level                     (void);
+extern struct tinst_level *outermost_tinst_level(void);
+extern void init_template_processing		(void);
+extern void print_template_statistics		(void);
+bool template_template_parameter_p		(const_tree);
+bool template_type_parameter_p                  (const_tree);
+extern bool primary_template_instantiation_p    (const_tree);
+extern tree get_primary_template_innermost_parameters	(const_tree);
+extern tree get_template_parms_at_level (tree, int);
+extern tree get_template_innermost_arguments	(const_tree);
+extern tree get_template_argument_pack_elems	(const_tree);
+extern tree get_function_template_decl		(const_tree);
+extern tree resolve_nondeduced_context		(tree);
+extern hashval_t iterative_hash_template_arg (tree arg, hashval_t val);
+
+/* in repo.c */
+extern void init_repo				(void);
+extern int repo_emit_p				(tree);
+extern bool repo_export_class_p			(const_tree);
+extern void finish_repo				(void);
+
+/* in rtti.c */
+/* A vector of all tinfo decls that haven't been emitted yet.  */
+extern GTY(()) vec<tree, va_gc> *unemitted_tinfo_decls;
+
+extern void init_rtti_processing		(void);
+extern tree build_typeid			(tree, tsubst_flags_t);
+extern tree get_tinfo_decl			(tree);
+extern tree get_typeid				(tree, tsubst_flags_t);
+extern tree build_headof			(tree);
+extern tree build_dynamic_cast			(tree, tree, tsubst_flags_t);
+extern void emit_support_tinfos			(void);
+extern bool emit_tinfo_decl			(tree);
+
+/* in search.c */
+extern bool accessible_base_p			(tree, tree, bool);
+extern tree lookup_base                         (tree, tree, base_access,
+						 base_kind *, tsubst_flags_t);
+extern tree dcast_base_hint			(tree, tree);
+extern int accessible_p				(tree, tree, bool);
+extern int accessible_in_template_p		(tree, tree);
+extern tree lookup_field_1			(tree, tree, bool);
+extern tree lookup_field			(tree, tree, int, bool);
+extern int lookup_fnfields_1			(tree, tree);
+extern tree lookup_fnfields_slot		(tree, tree);
+extern tree lookup_fnfields_slot_nolazy		(tree, tree);
+extern int class_method_index_for_fn		(tree, tree);
+extern tree lookup_fnfields			(tree, tree, int);
+extern tree lookup_member			(tree, tree, int, bool,
+						 tsubst_flags_t);
+extern int look_for_overrides			(tree, tree);
+extern void get_pure_virtuals			(tree);
+extern void maybe_suppress_debug_info		(tree);
+extern void note_debug_info_needed		(tree);
+extern void print_search_statistics		(void);
+extern void reinit_search_statistics		(void);
+extern tree current_scope			(void);
+extern int at_function_scope_p			(void);
+extern bool at_class_scope_p			(void);
+extern bool at_namespace_scope_p		(void);
+extern tree context_for_name_lookup		(tree);
+extern tree lookup_conversions			(tree);
+extern tree binfo_from_vbase			(tree);
+extern tree binfo_for_vbase			(tree, tree);
+extern tree look_for_overrides_here		(tree, tree);
+#define dfs_skip_bases ((tree)1)
+extern tree dfs_walk_all (tree, tree (*) (tree, void *),
+			  tree (*) (tree, void *), void *);
+extern tree dfs_walk_once (tree, tree (*) (tree, void *),
+			   tree (*) (tree, void *), void *);
+extern tree binfo_via_virtual			(tree, tree);
+extern tree build_baselink			(tree, tree, tree, tree);
+extern tree adjust_result_of_qualified_name_lookup
+						(tree, tree, tree);
+extern tree copied_binfo			(tree, tree);
+extern tree original_binfo			(tree, tree);
+extern int shared_member_p			(tree);
+
+/* The representation of a deferred access check.  */
+
+typedef struct GTY(()) deferred_access_check {
+  /* The base class in which the declaration is referenced. */
+  tree binfo;
+  /* The declaration whose access must be checked.  */
+  tree decl;
+  /* The declaration that should be used in the error message.  */
+  tree diag_decl;
+  /* The location of this access.  */
+  location_t loc;
+} deferred_access_check;
+
+/* in semantics.c */
+extern void push_deferring_access_checks	(deferring_kind);
+extern void resume_deferring_access_checks	(void);
+extern void stop_deferring_access_checks	(void);
+extern void pop_deferring_access_checks		(void);
+extern vec<deferred_access_check, va_gc> *get_deferred_access_checks (void);
+extern void reopen_deferring_access_checks (vec<deferred_access_check, va_gc> *);
+extern void pop_to_parent_deferring_access_checks (void);
+extern bool perform_access_checks (vec<deferred_access_check, va_gc> *,
+				   tsubst_flags_t);
+extern bool perform_deferred_access_checks	(tsubst_flags_t);
+extern bool perform_or_defer_access_check	(tree, tree, tree,
+						 tsubst_flags_t);
+extern int stmts_are_full_exprs_p		(void);
+extern void init_cp_semantics			(void);
+extern tree do_poplevel				(tree);
+extern void break_maybe_infinite_loop		(void);
+extern void add_decl_expr			(tree);
+extern tree maybe_cleanup_point_expr_void	(tree);
+extern tree finish_expr_stmt			(tree);
+extern tree begin_if_stmt			(void);
+extern void finish_if_stmt_cond			(tree, tree);
+extern tree finish_then_clause			(tree);
+extern void begin_else_clause			(tree);
+extern void finish_else_clause			(tree);
+extern void finish_if_stmt			(tree);
+extern tree begin_while_stmt			(void);
+extern void finish_while_stmt_cond		(tree, tree, bool);
+extern void finish_while_stmt			(tree);
+extern tree begin_do_stmt			(void);
+extern void finish_do_body			(tree);
+extern void finish_do_stmt			(tree, tree, bool);
+extern tree finish_return_stmt			(tree);
+extern tree begin_for_scope			(tree *);
+extern tree begin_for_stmt			(tree, tree);
+extern void finish_for_init_stmt		(tree);
+extern void finish_for_cond			(tree, tree, bool);
+extern void finish_for_expr			(tree, tree);
+extern void finish_for_stmt			(tree);
+extern tree begin_range_for_stmt		(tree, tree);
+extern void finish_range_for_decl		(tree, tree, tree);
+extern void finish_range_for_stmt		(tree);
+extern tree finish_break_stmt			(void);
+extern tree finish_continue_stmt		(void);
+extern tree begin_switch_stmt			(void);
+extern void finish_switch_cond			(tree, tree);
+extern void finish_switch_stmt			(tree);
+extern tree finish_goto_stmt			(tree);
+extern tree begin_try_block			(void);
+extern void finish_try_block			(tree);
+extern void finish_handler_sequence		(tree);
+extern tree begin_function_try_block		(tree *);
+extern void finish_function_try_block		(tree);
+extern void finish_function_handler_sequence    (tree, tree);
+extern void finish_cleanup_try_block		(tree);
+extern tree begin_handler			(void);
+extern void finish_handler_parms		(tree, tree);
+extern void finish_handler			(tree);
+extern void finish_cleanup			(tree, tree);
+extern bool literal_type_p (tree);
+extern tree register_constexpr_fundef (tree, tree);
+extern bool check_constexpr_ctor_body (tree, tree);
+extern tree ensure_literal_type_for_constexpr_object (tree);
+extern bool potential_constant_expression (tree);
+extern bool potential_rvalue_constant_expression (tree);
+extern bool require_potential_constant_expression (tree);
+extern bool require_potential_rvalue_constant_expression (tree);
+extern tree cxx_constant_value (tree);
+extern tree maybe_constant_value (tree);
+extern tree maybe_constant_init (tree);
+extern bool is_sub_constant_expr (tree);
+extern bool reduced_constant_expression_p (tree);
+extern void explain_invalid_constexpr_fn (tree);
+extern vec<tree> cx_error_context (void);
+
+enum {
+  BCS_NO_SCOPE = 1,
+  BCS_TRY_BLOCK = 2,
+  BCS_FN_BODY = 4
+};
+extern tree begin_compound_stmt			(unsigned int);
+
+extern void finish_compound_stmt		(tree);
+extern tree finish_asm_stmt			(int, tree, tree, tree, tree,
+						 tree);
+extern tree finish_label_stmt			(tree);
+extern void finish_label_decl			(tree);
+extern tree finish_parenthesized_expr		(tree);
+extern tree force_paren_expr			(tree);
+extern tree finish_non_static_data_member       (tree, tree, tree);
+extern tree begin_stmt_expr			(void);
+extern tree finish_stmt_expr_expr		(tree, tree);
+extern tree finish_stmt_expr			(tree, bool);
+extern tree stmt_expr_value_expr		(tree);
+bool empty_expr_stmt_p				(tree);
+extern tree perform_koenig_lookup		(tree, vec<tree, va_gc> *,
+						 tsubst_flags_t);
+extern tree finish_call_expr			(tree, vec<tree, va_gc> **, bool,
+						 bool, tsubst_flags_t);
+extern tree finish_increment_expr		(tree, enum tree_code);
+extern tree finish_this_expr			(void);
+extern tree finish_pseudo_destructor_expr       (tree, tree, tree, location_t);
+extern tree finish_unary_op_expr		(location_t, enum tree_code, tree,
+						 tsubst_flags_t);
+extern tree finish_compound_literal		(tree, tree, tsubst_flags_t);
+extern tree finish_fname			(tree);
+extern void finish_translation_unit		(void);
+extern tree finish_template_type_parm		(tree, tree);
+extern tree finish_template_template_parm       (tree, tree);
+extern tree begin_class_definition		(tree);
+extern void finish_template_decl		(tree);
+extern tree finish_template_type		(tree, tree, int);
+extern tree finish_base_specifier		(tree, tree, bool);
+extern void finish_member_declaration		(tree);
+extern tree finish_id_expression		(tree, tree, tree,
+						 cp_id_kind *,
+						 bool, bool, bool *,
+						 bool, bool, bool, bool,
+						 const char **,
+                                                 location_t);
+extern tree finish_typeof			(tree);
+extern tree finish_underlying_type	        (tree);
+extern tree calculate_bases                     (tree);
+extern tree finish_bases                        (tree, bool);
+extern tree calculate_direct_bases              (tree);
+extern tree finish_offsetof			(tree);
+extern void finish_decl_cleanup			(tree, tree);
+extern void finish_eh_cleanup			(tree);
+extern void emit_associated_thunks		(tree);
+extern void finish_mem_initializers		(tree);
+extern tree check_template_template_default_arg (tree);
+extern bool expand_or_defer_fn_1		(tree);
+extern void expand_or_defer_fn			(tree);
+extern void add_typedef_to_current_template_for_access_check (tree, tree,
+							      location_t);
+extern void check_accessibility_of_qualified_id (tree, tree, tree);
+extern tree finish_qualified_id_expr		(tree, tree, bool, bool,
+						 bool, bool, tsubst_flags_t);
+extern void simplify_aggr_init_expr		(tree *);
+extern void finalize_nrv			(tree *, tree, tree);
+extern void note_decl_for_pch			(tree);
+extern tree omp_reduction_id			(enum tree_code, tree, tree);
+extern tree cp_remove_omp_priv_cleanup_stmt	(tree *, int *, void *);
+extern void cp_check_omp_declare_reduction	(tree);
+extern tree finish_omp_clauses			(tree);
+extern void finish_omp_threadprivate		(tree);
+extern tree begin_omp_structured_block		(void);
+extern tree finish_omp_structured_block		(tree);
+extern tree begin_omp_parallel			(void);
+extern tree finish_omp_parallel			(tree, tree);
+extern tree begin_omp_task			(void);
+extern tree finish_omp_task			(tree, tree);
+extern tree finish_omp_for			(location_t, enum tree_code,
+						 tree, tree, tree, tree, tree,
+						 tree, tree);
+extern void finish_omp_atomic			(enum tree_code, enum tree_code,
+						 tree, tree, tree, tree, tree,
+						 bool);
+extern void finish_omp_barrier			(void);
+extern void finish_omp_flush			(void);
+extern void finish_omp_taskwait			(void);
+extern void finish_omp_taskyield		(void);
+extern void finish_omp_cancel			(tree);
+extern void finish_omp_cancellation_point	(tree);
+extern tree begin_transaction_stmt		(location_t, tree *, int);
+extern void finish_transaction_stmt		(tree, tree, int, tree);
+extern tree build_transaction_expr		(location_t, tree, int, tree);
+extern bool cxx_omp_create_clause_info		(tree, tree, bool, bool,
+						 bool, bool);
+extern tree baselink_for_fns                    (tree);
+extern void finish_static_assert                (tree, tree, location_t,
+                                                 bool);
+extern tree finish_decltype_type                (tree, bool, tsubst_flags_t);
+extern tree finish_trait_expr			(enum cp_trait_kind, tree, tree);
+extern tree build_lambda_expr                   (void);
+extern tree build_lambda_object			(tree);
+extern tree begin_lambda_type                   (tree);
+extern tree lambda_capture_field_type		(tree, bool);
+extern tree lambda_return_type			(tree);
+extern tree lambda_proxy_type			(tree);
+extern tree lambda_function			(tree);
+extern void apply_deduced_return_type           (tree, tree);
+extern tree add_capture                         (tree, tree, tree, bool, bool);
+extern tree add_default_capture                 (tree, tree, tree);
+extern tree build_capture_proxy			(tree);
+extern void insert_capture_proxy		(tree);
+extern void insert_pending_capture_proxies	(void);
+extern bool is_capture_proxy			(tree);
+extern bool is_normal_capture_proxy             (tree);
+extern void register_capture_members		(tree);
+extern tree lambda_expr_this_capture            (tree);
+extern tree maybe_resolve_dummy			(tree);
+extern tree nonlambda_method_basetype		(void);
+extern void maybe_add_lambda_conv_op            (tree);
+extern bool is_lambda_ignored_entity            (tree);
+
+/* in tree.c */
+extern int cp_tree_operand_length		(const_tree);
+void cp_free_lang_data 				(tree t);
+extern tree force_target_expr			(tree, tree, tsubst_flags_t);
+extern tree build_target_expr_with_type		(tree, tree, tsubst_flags_t);
+extern void lang_check_failed			(const char *, int,
+						 const char *) ATTRIBUTE_NORETURN;
+extern tree stabilize_expr			(tree, tree *);
+extern void stabilize_call			(tree, tree *);
+extern bool stabilize_init			(tree, tree *);
+extern tree add_stmt_to_compound		(tree, tree);
+extern void init_tree				(void);
+extern bool pod_type_p				(const_tree);
+extern bool layout_pod_type_p			(const_tree);
+extern bool std_layout_type_p			(const_tree);
+extern bool trivial_type_p			(const_tree);
+extern bool trivially_copyable_p		(const_tree);
+extern bool scalarish_type_p			(const_tree);
+extern bool type_has_nontrivial_default_init	(const_tree);
+extern bool type_has_nontrivial_copy_init	(const_tree);
+extern bool class_tmpl_impl_spec_p		(const_tree);
+extern int zero_init_p				(const_tree);
+extern bool check_abi_tag_redeclaration		(const_tree, const_tree, const_tree);
+extern tree strip_typedefs			(tree);
+extern tree strip_typedefs_expr			(tree);
+extern tree copy_binfo				(tree, tree, tree,
+						 tree *, int);
+extern int member_p				(const_tree);
+extern cp_lvalue_kind real_lvalue_p		(const_tree);
+extern cp_lvalue_kind lvalue_kind		(const_tree);
+extern bool lvalue_or_rvalue_with_address_p	(const_tree);
+extern bool xvalue_p	                        (const_tree);
+extern bool builtin_valid_in_constant_expr_p    (const_tree);
+extern tree build_min				(enum tree_code, tree, ...);
+extern tree build_min_nt_loc			(location_t, enum tree_code,
+						 ...);
+extern tree build_min_non_dep			(enum tree_code, tree, ...);
+extern tree build_min_non_dep_call_vec		(tree, tree, vec<tree, va_gc> *);
+extern tree build_cplus_new			(tree, tree, tsubst_flags_t);
+extern tree build_aggr_init_expr		(tree, tree);
+extern tree get_target_expr			(tree);
+extern tree get_target_expr_sfinae		(tree, tsubst_flags_t);
+extern tree build_cplus_array_type		(tree, tree);
+extern tree build_array_of_n_type		(tree, int);
+extern bool array_of_runtime_bound_p		(tree);
+extern tree build_array_copy			(tree);
+extern tree build_vec_init_expr			(tree, tree, tsubst_flags_t);
+extern void diagnose_non_constexpr_vec_init	(tree);
+extern tree hash_tree_cons			(tree, tree, tree);
+extern tree hash_tree_chain			(tree, tree);
+extern tree build_qualified_name		(tree, tree, tree, bool);
+extern tree build_ref_qualified_type		(tree, cp_ref_qualifier);
+extern int is_overloaded_fn			(tree);
+extern tree dependent_name			(tree);
+extern tree get_fns				(tree);
+extern tree get_first_fn			(tree);
+extern tree ovl_cons				(tree, tree);
+extern tree build_overload			(tree, tree);
+extern tree ovl_scope				(tree);
+extern bool non_static_member_function_p        (tree);
+extern const char *cxx_printable_name		(tree, int);
+extern const char *cxx_printable_name_translate	(tree, int);
+extern tree build_exception_variant		(tree, tree);
+extern tree bind_template_template_parm		(tree, tree);
+extern tree array_type_nelts_total		(tree);
+extern tree array_type_nelts_top		(tree);
+extern tree break_out_target_exprs		(tree);
+extern tree get_type_decl			(tree);
+extern tree decl_namespace_context		(tree);
+extern bool decl_anon_ns_mem_p			(const_tree);
+extern tree lvalue_type				(tree);
+extern tree error_type				(tree);
+extern int varargs_function_p			(const_tree);
+extern bool really_overloaded_fn		(tree);
+extern bool cp_tree_equal			(tree, tree);
+extern tree no_linkage_check			(tree, bool);
+extern void debug_binfo				(tree);
+extern tree build_dummy_object			(tree);
+extern tree maybe_dummy_object			(tree, tree *);
+extern int is_dummy_object			(const_tree);
+extern const struct attribute_spec cxx_attribute_table[];
+extern tree make_ptrmem_cst			(tree, tree);
+extern tree cp_build_type_attribute_variant     (tree, tree);
+extern tree cp_build_reference_type		(tree, bool);
+extern tree move				(tree);
+extern tree cp_build_qualified_type_real	(tree, int, tsubst_flags_t);
+#define cp_build_qualified_type(TYPE, QUALS) \
+  cp_build_qualified_type_real ((TYPE), (QUALS), tf_warning_or_error)
+extern bool cv_qualified_p			(const_tree);
+extern tree cv_unqualified			(tree);
+extern special_function_kind special_function_p (const_tree);
+extern int count_trees				(tree);
+extern int char_type_p				(tree);
+extern void verify_stmt_tree			(tree);
+extern linkage_kind decl_linkage		(tree);
+extern duration_kind decl_storage_duration	(tree);
+extern tree cp_walk_subtrees (tree*, int*, walk_tree_fn,
+			      void*, struct pointer_set_t*);
+#define cp_walk_tree(tp,func,data,pset) \
+	walk_tree_1 (tp, func, data, pset, cp_walk_subtrees)
+#define cp_walk_tree_without_duplicates(tp,func,data) \
+	walk_tree_without_duplicates_1 (tp, func, data, cp_walk_subtrees)
+extern tree fold_if_not_in_template		(tree);
+extern tree rvalue				(tree);
+extern tree convert_bitfield_to_declared_type   (tree);
+extern tree cp_save_expr			(tree);
+extern bool cast_valid_in_integral_constant_expression_p (tree);
+extern bool cxx_type_hash_eq			(const_tree, const_tree);
+
+extern void cxx_print_statistics		(void);
+extern bool maybe_warn_zero_as_null_pointer_constant (tree, location_t);
+
+/* in ptree.c */
+extern void cxx_print_xnode			(FILE *, tree, int);
+extern void cxx_print_decl			(FILE *, tree, int);
+extern void cxx_print_type			(FILE *, tree, int);
+extern void cxx_print_identifier		(FILE *, tree, int);
+extern void cxx_print_error_function		(diagnostic_context *,
+						 const char *,
+						 struct diagnostic_info *);
+
+/* in typeck.c */
+extern bool cxx_mark_addressable		(tree);
+extern int string_conv_p			(const_tree, const_tree, int);
+extern tree cp_truthvalue_conversion		(tree);
+extern tree condition_conversion		(tree);
+extern tree require_complete_type		(tree);
+extern tree require_complete_type_sfinae	(tree, tsubst_flags_t);
+extern tree complete_type			(tree);
+extern tree complete_type_or_else		(tree, tree);
+extern tree complete_type_or_maybe_complain	(tree, tree, tsubst_flags_t);
+extern int type_unknown_p			(const_tree);
+enum { ce_derived, ce_normal, ce_exact };
+extern bool comp_except_specs			(const_tree, const_tree, int);
+extern bool comptypes				(tree, tree, int);
+extern bool same_type_ignoring_top_level_qualifiers_p (tree, tree);
+extern bool compparms				(const_tree, const_tree);
+extern int comp_cv_qualification		(const_tree, const_tree);
+extern int comp_cv_qual_signature		(tree, tree);
+extern tree cxx_sizeof_or_alignof_expr		(tree, enum tree_code, bool);
+extern tree cxx_sizeof_or_alignof_type		(tree, enum tree_code, bool);
+extern tree cxx_alignas_expr                    (tree);
+extern tree cxx_sizeof_nowarn                   (tree);
+extern tree is_bitfield_expr_with_lowered_type  (const_tree);
+extern tree unlowered_expr_type                 (const_tree);
+extern tree decay_conversion			(tree, tsubst_flags_t);
+extern tree build_class_member_access_expr      (tree, tree, tree, bool,
+						 tsubst_flags_t);
+extern tree finish_class_member_access_expr     (tree, tree, bool, 
+						 tsubst_flags_t);
+extern tree build_x_indirect_ref		(location_t, tree,
+						 ref_operator, tsubst_flags_t);
+extern tree cp_build_indirect_ref		(tree, ref_operator,
+                                                 tsubst_flags_t);
+extern tree build_array_ref			(location_t, tree, tree);
+extern tree cp_build_array_ref			(location_t, tree, tree,
+						 tsubst_flags_t);
+extern tree get_member_function_from_ptrfunc	(tree *, tree, tsubst_flags_t);
+extern tree cp_build_function_call              (tree, tree, tsubst_flags_t);
+extern tree cp_build_function_call_nary         (tree, tsubst_flags_t, ...)
+						ATTRIBUTE_SENTINEL;
+extern tree cp_build_function_call_vec		(tree, vec<tree, va_gc> **,
+						 tsubst_flags_t);
+extern tree build_x_binary_op			(location_t,
+						 enum tree_code, tree,
+						 enum tree_code, tree,
+						 enum tree_code, tree *,
+						 tsubst_flags_t);
+extern tree build_x_array_ref			(location_t, tree, tree,
+						 tsubst_flags_t);
+extern tree build_x_unary_op			(location_t,
+						 enum tree_code, tree,
+                                                 tsubst_flags_t);
+extern tree cp_build_addr_expr			(tree, tsubst_flags_t);
+extern tree cp_build_addr_expr_strict		(tree, tsubst_flags_t);
+extern tree cp_build_unary_op                   (enum tree_code, tree, int, 
+                                                 tsubst_flags_t);
+extern tree unary_complex_lvalue		(enum tree_code, tree);
+extern tree build_x_conditional_expr		(location_t, tree, tree, tree, 
+                                                 tsubst_flags_t);
+extern tree build_x_compound_expr_from_list	(tree, expr_list_kind,
+						 tsubst_flags_t);
+extern tree build_x_compound_expr_from_vec	(vec<tree, va_gc> *,
+						 const char *, tsubst_flags_t);
+extern tree build_x_compound_expr		(location_t, tree, tree,
+						 tsubst_flags_t);
+extern tree build_compound_expr                 (location_t, tree, tree);
+extern tree cp_build_compound_expr		(tree, tree, tsubst_flags_t);
+extern tree build_static_cast			(tree, tree, tsubst_flags_t);
+extern tree build_reinterpret_cast		(tree, tree, tsubst_flags_t);
+extern tree build_const_cast			(tree, tree, tsubst_flags_t);
+extern tree build_c_cast			(location_t, tree, tree);
+extern tree cp_build_c_cast			(tree, tree, tsubst_flags_t);
+extern tree build_x_modify_expr			(location_t, tree,
+						 enum tree_code, tree,
+						 tsubst_flags_t);
+extern tree cp_build_modify_expr		(tree, enum tree_code, tree,
+						 tsubst_flags_t);
+extern tree convert_for_initialization		(tree, tree, tree, int,
+						 impl_conv_rhs, tree, int,
+                                                 tsubst_flags_t);
+extern int comp_ptr_ttypes			(tree, tree);
+extern bool comp_ptr_ttypes_const		(tree, tree);
+extern bool error_type_p			(const_tree);
+extern bool ptr_reasonably_similar		(const_tree, const_tree);
+extern tree build_ptrmemfunc			(tree, tree, int, bool,
+						 tsubst_flags_t);
+extern int cp_type_quals			(const_tree);
+extern int type_memfn_quals			(const_tree);
+extern cp_ref_qualifier type_memfn_rqual	(const_tree);
+extern tree apply_memfn_quals			(tree, cp_cv_quals, cp_ref_qualifier);
+extern bool cp_has_mutable_p			(const_tree);
+extern bool at_least_as_qualified_p		(const_tree, const_tree);
+extern void cp_apply_type_quals_to_decl		(int, tree);
+extern tree build_ptrmemfunc1			(tree, tree, tree);
+extern void expand_ptrmemfunc_cst		(tree, tree *, tree *);
+extern tree type_after_usual_arithmetic_conversions (tree, tree);
+extern tree common_pointer_type                 (tree, tree);
+extern tree composite_pointer_type		(tree, tree, tree, tree,
+						 composite_pointer_operation, 
+						 tsubst_flags_t);
+extern tree merge_types				(tree, tree);
+extern tree strip_array_domain			(tree);
+extern tree check_return_expr			(tree, bool *);
+extern tree cp_build_binary_op                  (location_t,
+						 enum tree_code, tree, tree,
+						 tsubst_flags_t);
+extern tree build_x_vec_perm_expr               (location_t,
+						 tree, tree, tree,
+						 tsubst_flags_t);
+#define cxx_sizeof(T)  cxx_sizeof_or_alignof_type (T, SIZEOF_EXPR, true)
+extern tree build_simple_component_ref		(tree, tree);
+extern tree build_ptrmemfunc_access_expr	(tree, tree);
+extern tree build_address			(tree);
+extern tree build_typed_address			(tree, tree);
+extern tree build_nop				(tree, tree);
+extern tree non_reference			(tree);
+extern tree lookup_anon_field			(tree, tree);
+extern bool invalid_nonstatic_memfn_p		(tree, tsubst_flags_t);
+extern tree convert_member_func_to_ptr		(tree, tree, tsubst_flags_t);
+extern tree convert_ptrmem			(tree, tree, bool, bool,
+						 tsubst_flags_t);
+extern int lvalue_or_else			(tree, enum lvalue_use,
+                                                 tsubst_flags_t);
+extern void check_template_keyword		(tree);
+extern bool check_raw_literal_operator		(const_tree decl);
+extern bool check_literal_operator_args		(const_tree, bool *, bool *);
+extern void maybe_warn_about_useless_cast       (tree, tree, tsubst_flags_t);
+extern tree cp_perform_integral_promotions      (tree, tsubst_flags_t);
+
+/* in typeck2.c */
+extern void require_complete_eh_spec_types	(tree, tree);
+extern void cxx_incomplete_type_diagnostic	(const_tree, const_tree, diagnostic_t);
+#undef cxx_incomplete_type_error
+extern void cxx_incomplete_type_error		(const_tree, const_tree);
+#define cxx_incomplete_type_error(V,T) \
+  (cxx_incomplete_type_diagnostic ((V), (T), DK_ERROR))
+extern tree error_not_base_type			(tree, tree);
+extern tree binfo_or_else			(tree, tree);
+extern void cxx_readonly_error			(tree, enum lvalue_use);
+extern void complete_type_check_abstract	(tree);
+extern int abstract_virtuals_error		(tree, tree);
+extern int abstract_virtuals_error		(abstract_class_use, tree);
+extern int abstract_virtuals_error_sfinae	(tree, tree, tsubst_flags_t);
+extern int abstract_virtuals_error_sfinae	(abstract_class_use, tree, tsubst_flags_t);
+
+extern tree store_init_value			(tree, tree, vec<tree, va_gc>**, int);
+extern void check_narrowing			(tree, tree);
+extern tree digest_init				(tree, tree, tsubst_flags_t);
+extern tree digest_init_flags			(tree, tree, int);
+extern tree build_scoped_ref			(tree, tree, tree *);
+extern tree build_x_arrow			(location_t, tree,
+						 tsubst_flags_t);
+extern tree build_m_component_ref		(tree, tree, tsubst_flags_t);
+extern tree build_functional_cast		(tree, tree, tsubst_flags_t);
+extern tree add_exception_specifier		(tree, tree, int);
+extern tree merge_exception_specifiers		(tree, tree, tree);
+
+/* in mangle.c */
+extern void init_mangle				(void);
+extern void mangle_decl				(tree);
+extern const char *mangle_type_string		(tree);
+extern tree mangle_typeinfo_for_type		(tree);
+extern tree mangle_typeinfo_string_for_type	(tree);
+extern tree mangle_vtbl_for_type		(tree);
+extern tree mangle_vtt_for_type			(tree);
+extern tree mangle_ctor_vtbl_for_type		(tree, tree);
+extern tree mangle_thunk			(tree, int, tree, tree);
+extern tree mangle_conv_op_name_for_type	(tree);
+extern tree mangle_guard_variable		(tree);
+extern tree mangle_tls_init_fn			(tree);
+extern tree mangle_tls_wrapper_fn		(tree);
+extern bool decl_tls_wrapper_p			(tree);
+extern tree mangle_ref_init_variable		(tree);
+extern char * get_mangled_vtable_map_var_name   (tree);
+
+/* in dump.c */
+extern bool cp_dump_tree			(void *, tree);
+
+/* In cp/cp-objcp-common.c.  */
+
+extern alias_set_type cxx_get_alias_set		(tree);
+extern bool cxx_warn_unused_global_decl		(const_tree);
+extern size_t cp_tree_size			(enum tree_code);
+extern bool cp_var_mod_type_p			(tree, tree);
+extern void cxx_initialize_diagnostics		(diagnostic_context *);
+extern int cxx_types_compatible_p		(tree, tree);
+extern void init_shadowed_var_for_decl		(void);
+extern bool cxx_block_may_fallthru		(const_tree);
+
+/* in cp-gimplify.c */
+extern int cp_gimplify_expr			(tree *, gimple_seq *,
+						 gimple_seq *);
+extern void cp_genericize			(tree);
+extern bool cxx_omp_const_qual_no_mutable	(tree);
+extern enum omp_clause_default_kind cxx_omp_predetermined_sharing (tree);
+extern tree cxx_omp_clause_default_ctor		(tree, tree, tree);
+extern tree cxx_omp_clause_copy_ctor		(tree, tree, tree);
+extern tree cxx_omp_clause_assign_op		(tree, tree, tree);
+extern tree cxx_omp_clause_dtor			(tree, tree);
+extern void cxx_omp_finish_clause		(tree);
+extern bool cxx_omp_privatize_by_reference	(const_tree);
+
+/* in name-lookup.c */
+extern void suggest_alternatives_for            (location_t, tree);
+extern tree strip_using_decl                    (tree);
+
+/* in vtable-class-hierarchy.c */
+extern void vtv_compute_class_hierarchy_transitive_closure (void);
+extern void vtv_generate_init_routine           (void);
+extern void vtv_save_class_info                 (tree);
+extern void vtv_recover_class_info              (void);
+extern void vtv_build_vtable_verify_fndecl      (void);
+
+/* In cp-cilkplus.c.  */
+extern bool cpp_validate_cilk_plus_loop		(tree);
+
+/* In cp/cp-array-notations.c */
+extern tree expand_array_notation_exprs         (tree);
+bool cilkplus_an_triplet_types_ok_p             (location_t, tree, tree, tree,
+						 tree);
+/* In c-family/cilk.c */
+extern bool cilk_valid_spawn                    (tree);
+
+/* -- end of C++ */
+
+#endif /* ! GCC_CP_TREE_H */