From ab05897240fb27993741138f137dd096d003058e Mon Sep 17 00:00:00 2001
From: Richard Guenther <rguenther@suse.de>
Date: Mon, 2 Feb 2009 10:39:12 +0000
Subject: [PATCH] re PR tree-optimization/38937 (dereferencing pointer
 '<anonymous>' does break  strict-aliasing)

2009-02-02  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/38937
	* g++.dg/warn/Wstrict-aliasing-bogus-escape.C: New testcase.

From-SVN: r143864
---
 gcc/testsuite/ChangeLog                       |  5 ++++
 .../warn/Wstrict-aliasing-bogus-escape.C      | 30 +++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-escape.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d5040061715..249f717fd4d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2009-02-02  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/38937
+	* g++.dg/warn/Wstrict-aliasing-bogus-escape.C: New testcase.
+
 2009-02-01  Paolo Carlini  <paolo.carlini@oracle.com>
 
         PR c++/39053
diff --git a/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-escape.C b/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-escape.C
new file mode 100644
index 00000000000..9ea61987705
--- /dev/null
+++ b/gcc/testsuite/g++.dg/warn/Wstrict-aliasing-bogus-escape.C
@@ -0,0 +1,30 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wstrict-aliasing" } */
+
+#include <string>
+#include <list>
+
+class A;
+
+class B {
+public:
+    void foo(A&);
+    std::string s;
+};
+
+class A {
+public:
+    A& qaz() {
+	l.push_back( new A() );
+	return *l.back();
+    }
+    std::list<A*> l;
+};
+
+void bar()
+{
+  A a;
+  B b;
+  b.foo(a.qaz());
+}
+
-- 
2.30.2