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, 34 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/stackalign/alloca-6.c b/gcc/testsuite/gcc.dg/torture/stackalign/alloca-6.c
new file mode 100644
index 000000000..f0e4513de
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/stackalign/alloca-6.c
@@ -0,0 +1,34 @@
+/* PR middle-end/45234 */
+/* { dg-do run { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
+/* { dg-options "-mincoming-stack-boundary=2 -mpreferred-stack-boundary=2" } */
+
+#include "check.h"
+
+void
+__attribute__ ((noinline))
+bar (__float128 f)
+{
+  check (&f, __alignof__(f));
+}
+
+volatile int z = 6;
+
+int
+main (void)
+{
+  char *p = __builtin_alloca (z);
+
+  bar (0);
+
+  __builtin_strncpy (p, "good", 5);
+  if (__builtin_strncmp (p, "good", 5) != 0)
+    {
+#ifdef DEBUG
+      p[z - 1] = '\0';
+      printf ("Failed: %s != good\n", p);
+#endif
+     abort ();
+    }
+
+  return 0;
+}