------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- W A R N S W -- -- -- -- S p e c -- -- -- -- Copyright (C) 1999-2013, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT 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 distributed with GNAT; see file COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This unit contains the routines used to handle setting of warning options package Warnsw is ------------------- -- Warning Flags -- ------------------- -- These flags are activated or deactivated by -gnatw switches and control -- whether warnings of a given class will be generated or not. -- Note: most of these flags are still in opt, but the plan is to move them -- here as time goes by. And in fact a really nice idea would be to put -- them all in a Warn_Record so that they would be easy to save/restore. Warn_On_Record_Holes : Boolean := False; -- Warn when explicit record component clauses leave uncovered holes (gaps) -- in a record layout. Off by default, set by -gnatw.h (but not -gnatwa). Warn_On_Overridden_Size : Boolean := False; -- Warn when explicit record component clause or array component_size -- clause specifies a size that overrides a size for the typen which was -- set with an explicit size clause. Off by default, modified by use of -- -gnatw.s/.S, but not set by -gnatwa. Warn_On_Standard_Redefinition : Boolean := False; -- Warn when a program defines an identifier that matches a name in -- Standard. Off by default, modified by use of -gnatw.k/.K, but not -- affected by -gnatwa. ----------------------------------- -- Saving and Restoring Warnings -- ----------------------------------- -- Type used to save and restore warnings type Warning_Record is record Address_Clause_Overlay_Warnings : Boolean; Check_Unreferenced : Boolean; Check_Unreferenced_Formals : Boolean; Check_Withs : Boolean; Constant_Condition_Warnings : Boolean; Elab_Info_Messages : Boolean; Elab_Warnings : Boolean; Implementation_Unit_Warnings : Boolean; Ineffective_Inline_Warnings : Boolean; List_Body_Required_Info : Boolean; List_Inherited_Aspects : Boolean; Warning_Doc_Switch : Boolean; Warn_On_Ada_2005_Compatibility : Boolean; Warn_On_Ada_2012_Compatibility : Boolean; Warn_On_All_Unread_Out_Parameters : Boolean; Warn_On_Assertion_Failure : Boolean; Warn_On_Assumed_Low_Bound : Boolean; Warn_On_Atomic_Synchronization : Boolean; Warn_On_Bad_Fixed_Value : Boolean; Warn_On_Biased_Representation : Boolean; Warn_On_Constant : Boolean; Warn_On_Deleted_Code : Boolean; Warn_On_Dereference : Boolean; Warn_On_Export_Import : Boolean; Warn_On_Hiding : Boolean; Warn_On_Modified_Unread : Boolean; Warn_On_No_Value_Assigned : Boolean; Warn_On_Non_Local_Exception : Boolean; Warn_On_Object_Renames_Function : Boolean; Warn_On_Obsolescent_Feature : Boolean; Warn_On_Overlap : Boolean; Warn_On_Overridden_Size : Boolean; Warn_On_Parameter_Order : Boolean; Warn_On_Questionable_Missing_Parens : Boolean; Warn_On_Record_Holes : Boolean; Warn_On_Redundant_Constructs : Boolean; Warn_On_Reverse_Bit_Order : Boolean; Warn_On_Standard_Redefinition : Boolean; Warn_On_Suspicious_Contract : Boolean; Warn_On_Unchecked_Conversion : Boolean; Warn_On_Unordered_Enumeration_Type : Boolean; Warn_On_Unrecognized_Pragma : Boolean; Warn_On_Unrepped_Components : Boolean; Warn_On_Warnings_Off : Boolean; end record; function Save_Warnings return Warning_Record; -- Returns current settingh of warnings procedure Restore_Warnings (W : Warning_Record); -- Restores current settings of warning flags from W ----------------- -- Subprograms -- ----------------- function Set_Warning_Switch (C : Character) return Boolean; -- This function sets the warning switch or switches corresponding to the -- given character. It is used to process a -gnatw switch on the command -- line, or a character in a string literal in pragma Warnings. Returns -- True for valid warning character C, False for invalid character. function Set_Dot_Warning_Switch (C : Character) return Boolean; -- This function sets the warning switch or switches corresponding to the -- given character preceded by a dot. Used to process a -gnatw. switch on -- the command line or .C in a string literal in pragma Warnings. Returns -- True for valid warning character C, False for invalid character. procedure Set_GNAT_Mode_Warnings; -- This is called in -gnatg mode to set the warnings for gnat mode. It is -- also used to set the proper warning statuses for -gnatw.g. Note that -- this set of warnings is disjoint from -gnatwa, it enables warnings that -- are not included in -gnatwa, and it disables warnings that are included -- in -gnatwa (such as Warn_On_Implementation_Units, which we clearly want -- to be False for units built with -gnatg). end Warnsw;