re PR c++/57404 ([C++11] ICE: SIGSEGV in cp_classify_record with -g)

	PR c++/57404
	* cp-lang.c (cp_classify_record): Handle structs without
	TYPE_LANG_SPECIFIC.

From-SVN: r199456

gcc/cp/ChangeLog

 2013-05-30  Jason Merrill  <jason@redhat.com>
 
+	PR c++/57404
+	* cp-lang.c (cp_classify_record): Handle structs without
+	TYPE_LANG_SPECIFIC.
+
 	PR c++/52377
 	* class.c (common_enclosing_class): New.
 	* cp-tree.h: Declare it.

gcc/cp/cp-lang.c

@@ -127,7 +127,8 @@ cxx_dwarf_name (tree t, int verbosity)
 static enum classify_record
 cp_classify_record (tree type)
 {
-  if (CLASSTYPE_DECLARED_CLASS (type))
+  if (TYPE_LANG_SPECIFIC (type)
+      && CLASSTYPE_DECLARED_CLASS (type))
     return RECORD_IS_CLASS;
 
   return RECORD_IS_STRUCT;

gcc/testsuite/g++.dg/cpp1y/vla6.C

+// PR c++/57404
+// { dg-options "-std=c++11 -g" }
+
+void f (int i)
+{
+  int a[i];
+  [&a] {};
+}
+
+void g (int i)
+{
+  int a[i];
+  [&a] {} ();
+}