From b5afa20284b164fdfaf04801361748076a50a928 Mon Sep 17 00:00:00 2001
From: Paolo Carlini <paolo.carlini@oracle.com>
Date: Sun, 14 Oct 2012 18:24:32 +0000
Subject: [PATCH] re PR c++/53581 (Segmentation fault when enabling -std=c++0x
 on template code)

2012-10-14  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/53581
	* g++.dg/template/crash113.C: New.

From-SVN: r192438
---
 gcc/testsuite/ChangeLog                  |  5 +++
 gcc/testsuite/g++.dg/template/crash113.C | 50 ++++++++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/template/crash113.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 79aee2f3d6e..f8b04d2d5dc 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-14  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/53581
+	* g++.dg/template/crash113.C: New.
+
 2012-10-14  Jan Hubicka  <jh@suse.cz>
 
 	* gcc.dg/unroll_5.c: New testcase.
diff --git a/gcc/testsuite/g++.dg/template/crash113.C b/gcc/testsuite/g++.dg/template/crash113.C
new file mode 100644
index 00000000000..3d3a562bdcd
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/crash113.C
@@ -0,0 +1,50 @@
+// PR c++/53581
+
+template<class A, int M, int N>
+class Child;
+
+template<class A, int M, int N>
+class Base
+{
+public:
+  Child<A, M, N> operator-(const Base<A, M, N> &m) const
+  {
+    Child<A, M, N> diff;
+    return diff;
+  }
+
+  A test() const
+  {
+    return 0;
+  }
+
+private:
+  A values[M * N];
+};
+
+template<class A, int N>
+class Ops
+{
+public:
+  virtual ~Ops() {}
+
+  bool bar() const
+  {
+    Child<A, N, N> mat;
+    return (*static_cast<const Child<A, N, N>*>(this) - mat).test();
+  }
+};
+
+
+template<class A, int N>
+class Child<A, N, N> : public Base<A, N, N>, public Ops<A, N> {};
+
+class ImageWarp
+{
+  bool bar() const
+  {
+    return foo.bar();
+  }
+
+  Child<float, 3, 3> foo;
+};