Check in a pristine copy of GCC 4.8.1.

The copy of GCC that we use for Android is still not working for
mingw. Rather than finding all the differences that have crept into
our GCC, just check in a copy from
ftp://ftp.gnu.org/gnu/gcc/gcc-4.9.3/gcc-4.8.1.tar.bz2.

GCC 4.8.1 was chosen because it is what we have been using for mingw
thus far, and the emulator doesn't yet work when upgrading to 4.9.

Bug: http://b/26523949
Change-Id: Iedc0f05243d4332cc27ccd46b8a4b203c88dcaa3

1 files changed, 90 insertions, 0 deletions

diff --git a/gcc-4.8.1/libgo/runtime/go-runtime-error.c b/gcc-4.8.1/libgo/runtime/go-runtime-error.c
new file mode 100644
index 000000000..f5ab4f919
--- /dev/null
+++ b/gcc-4.8.1/libgo/runtime/go-runtime-error.c
@@ -0,0 +1,90 @@
+/* go-runtime-error.c -- Go runtime error.
+
+   Copyright 2010 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include "runtime.h"
+
+/* The compiler generates calls to this function.  This enum values
+   are known to the compiler and used by compiled code.  Any change
+   here must be reflected in the compiler.  */
+
+enum
+{
+  /* Slice index out of bounds: negative or larger than the length of
+     the slice.  */
+  SLICE_INDEX_OUT_OF_BOUNDS = 0,
+
+  /* Array index out of bounds.  */
+  ARRAY_INDEX_OUT_OF_BOUNDS = 1,
+
+  /* String index out of bounds.  */
+  STRING_INDEX_OUT_OF_BOUNDS = 2,
+
+  /* Slice slice out of bounds: negative or larger than the length of
+     the slice or high bound less than low bound.  */
+  SLICE_SLICE_OUT_OF_BOUNDS = 3,
+
+  /* Array slice out of bounds.  */
+  ARRAY_SLICE_OUT_OF_BOUNDS = 4,
+
+  /* String slice out of bounds.  */
+  STRING_SLICE_OUT_OF_BOUNDS = 5,
+
+  /* Dereference of nil pointer.  This is used when there is a
+     dereference of a pointer to a very large struct or array, to
+     ensure that a gigantic array is not used a proxy to access random
+     memory locations.  */
+  NIL_DEREFERENCE = 6,
+
+  /* Slice length or capacity out of bounds in make: negative or
+     overflow or length greater than capacity.  */
+  MAKE_SLICE_OUT_OF_BOUNDS = 7,
+
+  /* Map capacity out of bounds in make: negative or overflow.  */
+  MAKE_MAP_OUT_OF_BOUNDS = 8,
+
+  /* Channel capacity out of bounds in make: negative or overflow.  */
+  MAKE_CHAN_OUT_OF_BOUNDS = 9,
+
+  /* Integer division by zero.  */
+  DIVISION_BY_ZERO = 10
+};
+
+extern void __go_runtime_error () __attribute__ ((noreturn));
+
+void
+__go_runtime_error (int32 i)
+{
+  switch (i)
+    {
+    case SLICE_INDEX_OUT_OF_BOUNDS:
+    case ARRAY_INDEX_OUT_OF_BOUNDS:
+    case STRING_INDEX_OUT_OF_BOUNDS:
+      runtime_panicstring ("index out of range");
+
+    case SLICE_SLICE_OUT_OF_BOUNDS:
+    case ARRAY_SLICE_OUT_OF_BOUNDS:
+    case STRING_SLICE_OUT_OF_BOUNDS:
+      runtime_panicstring ("slice bounds out of range");
+
+    case NIL_DEREFERENCE:
+      runtime_panicstring ("nil pointer dereference");
+
+    case MAKE_SLICE_OUT_OF_BOUNDS:
+      runtime_panicstring ("make slice len or cap out of range");
+
+    case MAKE_MAP_OUT_OF_BOUNDS:
+      runtime_panicstring ("make map len out of range");
+
+    case MAKE_CHAN_OUT_OF_BOUNDS:
+      runtime_panicstring ("make chan len out of range");
+
+    case DIVISION_BY_ZERO:
+      runtime_panicstring ("integer divide by zero");
+
+    default:
+      runtime_panicstring ("unknown runtime error");
+    }
+}