re PR c++/27665 (ICE writing class instead of typename)

	PR c++/27665
	* parser.c (cp_parser_unqualified_id): Use constructor_name_p to
	identify destructors.
	(cp_parser_nested_name_specifier_opt): Remove invalid
	optimization.
	(cp_parser_template_id): Refine heuristic for determining whether
	we are entering a scope.
	PR c++/27665
	* g++.dg/template/crash52.C: New test.

From-SVN: r114669

gcc/cp/ChangeLog

 2006-06-14  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/27665
+	* parser.c (cp_parser_unqualified_id): Use constructor_name_p to
+	identify destructors.
+	(cp_parser_nested_name_specifier_opt): Remove invalid
+	optimization.
+	(cp_parser_template_id): Refine heuristic for determining whether
+	we are entering a scope.
+
 	PR c++/27648
 	* parser.c (cp_parser_declarator): Robustify.
 

gcc/testsuite/ChangeLog

 2006-06-14  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/27665
+	* g++.dg/template/crash52.C: New test.
+
 	PR c++/27648
 	* g++.dg/ext/attrib22.C: New test.
 

gcc/testsuite/g++.dg/template/crash52.C

+// PR c++/27665
+
+template<int> struct A
+{
+    struct B
+    {
+      struct C {};
+    };
+};
+
+template<int N> void foo()
+{
+  class A<N>::B::C X;
+}
+
+void bar()
+{
+  foo<0>();
+}