obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 42 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/pr25654.c b/gcc/testsuite/gcc.target/i386/pr25654.c
new file mode 100644
index 000000000..2d7ef221f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr25654.c
@@ -0,0 +1,42 @@
+/* { dg-do run } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O2 -mpreferred-stack-boundary=2 -march=i686 -frename-registers" } */
+
+extern void abort (void) __attribute__((noreturn));
+
+struct wrapper {
+union setconflict
+{
+  short a[20];
+  int b[10];
+} a;
+};
+
+int
+main ()
+{
+  int sum = 0;
+  {
+    struct wrapper a;
+    short *c;
+    c = a.a.a;
+    asm ("": "=r" (c):"0" (c));
+    *c = 0;
+    asm ("": "=r" (c):"0" (c));
+    sum += *c;
+  }
+  {
+    struct wrapper a;
+    int *c;
+    c = a.a.b;
+    asm ("": "=r" (c):"0" (c));
+    *c = 1;
+    asm ("": "=r" (c):"0" (c));
+    sum += *c;
+  }
+
+  if (sum != 1)
+    abort();
+  return 0;
+}
+