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, 20 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr45991.c b/gcc/testsuite/gcc.dg/pr45991.c
new file mode 100644
index 000000000..eefce4429
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr45991.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fstrict-overflow" } */
+
+struct S
+{
+  int i;
+};
+
+char A[64];
+
+void foo (char **dst, int i)
+{
+  char *p = A + 16;
+  while (i--)
+    {
+      int b = ((struct S *) (&p[i * 16 + 4]))->i;
+      char *c = A + i * 16;
+      dst[i] = c + b;
+    }
+}