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/pr2480.c | 53 ++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/pr2480.c

(limited to 'gcc/testsuite/gcc.dg/tree-ssa/pr2480.c')

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr2480.c b/gcc/testsuite/gcc.dg/tree-ssa/pr2480.c
new file mode 100644
index 000000000..d7f7af4d2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr2480.c
@@ -0,0 +1,53 @@
+/* { dg-do link } */
+/* { dg-options "-O2" } */
+
+/* We have enough cascading at -O2 to cover the missed control-dependence
+   in SCCVN (which considers the link_error calls to clobber the structs).  */
+
+struct example
+{
+  char a;
+  int b;
+  char c;
+} *ex1;
+
+extern void link_error(void);
+
+void
+bar (void)
+{
+  ex1->a = 1;
+  ex1->b = 2;
+  ex1->c = 3;
+
+  if (ex1->a != 1)
+    link_error ();
+  if (ex1->b != 2)
+    link_error ();
+  if (ex1->c != 3)
+    link_error ();
+
+}
+
+void
+foo (struct example *ex2)
+{
+  ex2->a = 1;
+  ex2->b = 2;
+  ex2->c = 3;
+
+  if (ex2->a != 1)
+    link_error ();
+  if (ex2->b != 2)
+    link_error ();
+  if (ex2->c != 3)
+    link_error ();
+
+}
+
+int main (void)
+{
+  bar ();
+  foo (ex1);
+  return 0;
+}
-- 
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