From 59c1f3840203780d04974b37b617ac0d673e8c4a Mon Sep 17 00:00:00 2001
From: Marek Polacek <polacek@redhat.com>
Date: Thu, 30 Apr 2015 18:01:07 +0000
Subject: [PATCH] re PR tree-optimization/63551 (wrong code (segfaults) at -Os
 on x86_64-linux-gnu)

	PR tree-optimization/63551
    	* g++.dg/ipa/pr63551.C: New test.

From-SVN: r222650
---
 gcc/testsuite/ChangeLog            |  5 +++++
 gcc/testsuite/g++.dg/ipa/pr63551.C | 23 +++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/ipa/pr63551.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 00af2c42833..aa0123502c7 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-04-30  Marek Polacek  <polacek@redhat.com>
+
+	PR tree-optimization/63551
+	* g++.dg/ipa/pr63551.C: New test.
+
 2015-04-30  Caroline Tice  <cmtice@google.com>
 
 	PR  65929
diff --git a/gcc/testsuite/g++.dg/ipa/pr63551.C b/gcc/testsuite/g++.dg/ipa/pr63551.C
new file mode 100644
index 00000000000..03e03397969
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ipa/pr63551.C
@@ -0,0 +1,23 @@
+// { dg-options "-O -Wno-psabi" }
+// { dg-do compile }
+
+struct A { int a; };
+template <typename T, typename V> struct B { V operator[] (T); };
+union U { long double ld; void *v; };
+A a;
+
+void
+bar (U &x)
+{
+  if (x.v) *reinterpret_cast <A *>(x.v) = a;
+}
+
+struct C { C (A) { c.ld = 0; bar (c); } U c; };
+struct D { A d, e; void foo () { f[0][d] = e; } B <int, B <A, C> > f; };
+
+void
+baz ()
+{
+  D d;
+  d.foo ();
+}
-- 
2.30.2