re PR c++/49276 ([C++0x] Segmentation fault with default lambda parameter in member function)

	PR c++/49276
	* mangle.c (write_nested_name): Use CP_DECL_CONTEXT instead of
	DECL_CONTEXT.

	* g++.dg/cpp0x/lambda/lambda-mangle2.C: New test.

From-SVN: r174619

gcc/cp/ChangeLog

+2011-06-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/49276
+	* mangle.c (write_nested_name): Use CP_DECL_CONTEXT instead of
+	DECL_CONTEXT.
+
 2011-06-01  Jason Merrill  <jason@redhat.com>
 
 	* pt.c (build_non_dependent_expr): Remove special handling of

gcc/cp/mangle.c

 /* Name mangling for the 3.0 C++ ABI.
-   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
-   Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010,
+   2011  Free Software Foundation, Inc.
    Written by Alex Samuel <samuel@codesourcery.com>
 
    This file is part of GCC.
@@ -943,7 +943,7 @@ write_nested_name (const tree decl)
   else
     {
       /* No, just use <prefix>  */
-      write_prefix (DECL_CONTEXT (decl));
+      write_prefix (CP_DECL_CONTEXT (decl));
       write_unqualified_name (decl);
     }
   write_char ('E');

gcc/testsuite/ChangeLog

+2011-06-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/49276
+	* g++.dg/cpp0x/lambda/lambda-mangle2.C: New test.
+
 2011-06-03  Nicola Pero  <nicola.pero@meta-innovation.com>
 
 	* objc.dg/headers.m: Do not include sarray.h and hash.h.

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-mangle2.C

+// PR c++/49276
+// { dg-do compile }
+// { dg-options "-std=c++0x" }
+
+template <int N>
+struct F
+{
+  template <typename U> F (U);
+};
+
+struct S
+{
+  void foo (F <0> x = [] {}) {}
+};
+
+int
+main ()
+{
+  S s;
+  s.foo ();
+}