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, 68 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/pr34176.c b/gcc/testsuite/gcc.c-torture/execute/pr34176.c
new file mode 100644
index 000000000..3bbdb22c7
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr34176.c
@@ -0,0 +1,68 @@
+
+typedef __SIZE_TYPE__ size_t;
+typedef unsigned int index_ty;
+typedef index_ty *index_list_ty;
+
+struct mult_index
+{
+  index_ty index;
+  unsigned int count;
+};
+
+struct mult_index_list
+{
+  struct mult_index *item;
+  size_t nitems;
+  size_t nitems_max;
+
+  struct mult_index *item2;
+  size_t nitems2_max;
+};
+
+int __attribute__((noinline))
+hash_find_entry (size_t *result)
+{
+    *result = 2;
+    return 0;
+}
+
+extern void abort (void);
+struct mult_index * __attribute__((noinline))
+foo (size_t n)
+{
+  static count = 0;
+  if (count++ > 0)
+    abort ();
+  return 0;
+}
+
+int
+main (void)
+{
+    size_t nitems = 0;
+
+    for (;;)
+    {
+        size_t list;
+
+        hash_find_entry (&list);
+        {
+            size_t len2 = list;
+            struct mult_index *destptr;
+            struct mult_index *dest;
+            size_t new_max  = nitems + len2;
+
+            if (new_max != len2)
+                break;
+            dest = foo (new_max);
+
+            destptr = dest;
+            while (len2--)
+                destptr++;
+
+            nitems = destptr - dest;
+        }
+    }
+
+    return 0;
+}