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, 86 insertions, 0 deletions

diff --git a/gcc-4.8.1/gcc/testsuite/g++.dg/abi/empty4.C b/gcc-4.8.1/gcc/testsuite/g++.dg/abi/empty4.C
new file mode 100644
index 000000000..d20a55cf7
--- /dev/null
+++ b/gcc-4.8.1/gcc/testsuite/g++.dg/abi/empty4.C
@@ -0,0 +1,86 @@
+// { dg-do run }
+
+// Copyright (C) 2001 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 31 Jul 2001 <nathan@codesourcery.com>
+
+// Bug 3820. We were bit copying empty bases including the
+// padding. Which clobbers whatever they overlay.
+
+struct Empty {};
+
+struct Inter : Empty {};
+
+long now = 0;
+
+struct NonPod
+{
+  long m;
+
+  NonPod () {m = 0x12345678;}
+  NonPod (long m_) {m = m_;}
+  NonPod &operator= (NonPod const &src) {now = m; m = src.m; return *this;}
+  NonPod (NonPod const &src) {m = src.m;}
+};
+
+struct A : Inter
+{
+  A (long c) {m = c;}
+  
+  NonPod m;
+};
+
+struct B
+{
+  Inter empty;
+  NonPod m;
+
+  B (long c) {m = c;}
+};
+
+struct C : NonPod, Inter
+{
+  C (long c) : NonPod (c), Inter () {}
+};
+
+int main ()
+{
+  A a (0x12131415);
+  
+  long was = a.m.m;
+  
+  a = 0x22232425;
+
+  if (was != now)
+    return 1;	// we copied the empty base which clobbered a.m.m's
+		// original value.
+  
+  A b (0x32333435);
+  *(Inter *)&a = *(Inter *)&b;
+  
+  if (a.m.m != 0x22232425)
+    return 2;	// we copied padding, which clobbered a.m.m
+
+  A b2 (0x32333435);
+  (Inter &)b2 = Inter ();
+  if (b2.m.m != 0x32333435)
+    return 2;	// we copied padding, which clobbered b2.m.m
+  
+  B c (0x12131415);
+  was = c.m.m;
+  c = 0x22232425;
+  if (was != now)
+    return 3;
+  
+  B d (0x32333435);
+  c.empty = d.empty;
+
+  if (c.m.m != 0x22232425)
+    return 4;
+
+  C e (0x32333435);
+
+  if (e.m != 0x32333435)
+    return 2;	// we copied padding
+  
+  return 0;
+}