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, 29 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr28726.c b/gcc/testsuite/gcc.dg/pr28726.c
new file mode 100644
index 000000000..11232ac86
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr28726.c
@@ -0,0 +1,29 @@
+/* PR rtl-optimization/28726 */
+/* Origin: Sigurd Schneider <sg313d@gmail.com> */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -fsched2-use-superblocks" } */
+
+extern void abort (void);
+
+static double my_loop(void) __attribute__((noinline));
+
+static double my_loop(void)
+{
+  double retval = 0.0;
+  const unsigned char *start = "\005\b\000";
+  const unsigned char *const end = start + 2;
+
+  while (start < end)
+    retval += *start++;
+
+  return retval;
+}
+
+int main(void)
+{
+  if (my_loop() != 13.0)
+    abort ();
+
+  return 0;
+}