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, 43 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/pr51466.c b/gcc/testsuite/gcc.c-torture/execute/pr51466.c
new file mode 100644
index 000000000..aa0b7fd4f
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr51466.c
@@ -0,0 +1,43 @@
+/* PR tree-optimization/51466 */
+
+extern void abort (void);
+
+__attribute__((noinline, noclone)) int
+foo (int i)
+{
+  volatile int v[4];
+  int *p;
+  v[i] = 6;
+  p = (int *) &v[i];
+  return *p;
+}
+
+__attribute__((noinline, noclone)) int
+bar (int i)
+{
+  volatile int v[4];
+  int *p;
+  v[i] = 6;
+  p = (int *) &v[i];
+  *p = 8;
+  return v[i];
+}
+
+__attribute__((noinline, noclone)) int
+baz (int i)
+{
+  volatile int v[4];
+  int *p;
+  v[i] = 6;
+  p = (int *) &v[0];
+  *p = 8;
+  return v[i];
+}
+
+int
+main ()
+{
+  if (foo (3) != 6 || bar (2) != 8 || baz (0) != 8 || baz (1) != 6)
+    abort ();
+  return 0;
+}