From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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.
---
 gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-10.c | 34 ++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-10.c

(limited to 'gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-10.c')

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-10.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-10.c
new file mode 100644
index 000000000..7177d991e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-10.c
@@ -0,0 +1,34 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-fab" } */
+
+/* Check that we fold strlen of equally long strings, and that we do not
+   fail to terminate when there is a nontrivial cycle in the corresponding
+   ssa graph.  */
+
+extern __SIZE_TYPE__ strlen (const char *);
+
+void foo(int i)
+{
+  char *s = "abcde";
+
+  if (i)
+    {
+      s = "defgh";
+      goto middle;
+    }
+
+start:
+
+  bla ();
+
+middle:
+
+  if (bla ())
+    goto start;
+
+  bar (strlen (s));
+}
+
+/* There should be no calls to strlen.  */
+/* { dg-final { scan-tree-dump-times "strlen" 0 "fab"} } */
+/* { dg-final { cleanup-tree-dump "fab" } } */
-- 
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