[PATCH] Add testcase for PR tree-optimization/63551 to 4.9/5/trunk

[Marek Polacek]

This patch adds a C++ testcase for the PR Martin J. fixed some time ago.

Tested on x86_64-linux, applying to 4.9/5/trunk.

2015-04-30  Marek Polacek  <pola...@redhat.com>

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

diff --git gcc/testsuite/g++.dg/ipa/pr63551.C gcc/testsuite/g++.dg/ipa/pr63551.C
index e69de29..03e0339 100644
--- gcc/testsuite/g++.dg/ipa/pr63551.C
+++ 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 ();
+}

        Marek