re PR c++/53563 (ICE in start_decl, at cp/decl.c:4427)

	PR c++/53563
	* parser.c (cp_parser_template_id): Add tag_type parm.
	(cp_parser_template_name): Likewise.
	(cp_parser_id_expression, cp_parser_unqualified_id): Adjust.
	(cp_parser_pseudo_destructor_name, cp_parser_type_name): Adjust.
	(cp_parser_simple_type_specifier, cp_parser_class_name): Adjust.
	(cp_parser_elaborated_type_specifier, cp_parser_class_head): Adjust.

From-SVN: r189024

gcc/cp/ChangeLog

+2012-06-27  Jason Merrill  <jason@redhat.com>
+
+	PR c++/53563
+	* parser.c (cp_parser_template_id): Add tag_type parm.
+	(cp_parser_template_name): Likewise.
+	(cp_parser_id_expression, cp_parser_unqualified_id): Adjust.
+	(cp_parser_pseudo_destructor_name, cp_parser_type_name): Adjust.
+	(cp_parser_simple_type_specifier, cp_parser_class_name): Adjust.
+	(cp_parser_elaborated_type_specifier, cp_parser_class_head): Adjust.
+
 2012-06-27  Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>
 
 	PR C++/51033

gcc/cp/parser.c

@@ -2062,9 +2062,9 @@ static tree cp_parser_template_parameter
 static tree cp_parser_type_parameter
   (cp_parser *, bool *);
 static tree cp_parser_template_id
-  (cp_parser *, bool, bool, bool);
+  (cp_parser *, bool, bool, enum tag_types, bool);
 static tree cp_parser_template_name
-  (cp_parser *, bool, bool, bool, bool *);
+  (cp_parser *, bool, bool, bool, enum tag_types, bool *);
 static tree cp_parser_template_argument_list
   (cp_parser *);
 static tree cp_parser_template_argument
@@ -4466,6 +4466,7 @@ cp_parser_id_expression (cp_parser *parser,
       id = cp_parser_template_id (parser,
 				  /*template_keyword_p=*/false,
 				  /*check_dependency_p=*/true,
+				  none_type,
 				  declarator_p);
       /* If that worked, we're done.  */
       if (cp_parser_parse_definitely (parser))
@@ -4543,6 +4544,7 @@ cp_parser_unqualified_id (cp_parser* parser,
 	/* Try a template-id.  */
 	id = cp_parser_template_id (parser, template_keyword_p,
 				    check_dependency_p,
+				    none_type,
 				    declarator_p);
 	/* If it worked, we're done.  */
 	if (cp_parser_parse_definitely (parser))
@@ -4554,6 +4556,7 @@ cp_parser_unqualified_id (cp_parser* parser,
     case CPP_TEMPLATE_ID:
       return cp_parser_template_id (parser, template_keyword_p,
 				    check_dependency_p,
+				    none_type,
 				    declarator_p);
 
     case CPP_COMPL:
@@ -4769,6 +4772,7 @@ cp_parser_unqualified_id (cp_parser* parser,
 	  /* Try a template-id.  */
 	  id = cp_parser_template_id (parser, template_keyword_p,
 				      /*check_dependency_p=*/true,
+				      none_type,
 				      declarator_p);
 	  /* If that worked, we're done.  */
 	  if (cp_parser_parse_definitely (parser))
@@ -6280,6 +6284,7 @@ cp_parser_pseudo_destructor_name (cp_parser* parser,
       cp_parser_template_id (parser,
 			     /*template_keyword_p=*/true,
 			     /*check_dependency_p=*/false,
+			     class_type,
 			     /*is_declaration=*/true);
       /* Look for the `::' token.  */
       cp_parser_require (parser, CPP_SCOPE, RT_SCOPE);
@@ -12376,6 +12381,7 @@ static tree
 cp_parser_template_id (cp_parser *parser,
 		       bool template_keyword_p,
 		       bool check_dependency_p,
+		       enum tag_types tag_type,
 		       bool is_declaration)
 {
   int i;
@@ -12432,6 +12438,7 @@ cp_parser_template_id (cp_parser *parser,
   templ = cp_parser_template_name (parser, template_keyword_p,
 				   check_dependency_p,
 				   is_declaration,
+				   tag_type,
 				   &is_identifier);
   if (templ == error_mark_node || is_identifier)
     {
@@ -12604,6 +12611,7 @@ cp_parser_template_name (cp_parser* parser,
 			 bool template_keyword_p,
 			 bool check_dependency_p,
 			 bool is_declaration,
+			 enum tag_types tag_type,
 			 bool *is_identifier)
 {
   tree identifier;
@@ -12710,7 +12718,7 @@ cp_parser_template_name (cp_parser* parser,
 
   /* Look up the name.  */
   decl = cp_parser_lookup_name (parser, identifier,
-				none_type,
+				tag_type,
 				/*is_template=*/true,
 				/*is_namespace=*/false,
 				check_dependency_p,
@@ -13699,6 +13707,7 @@ cp_parser_simple_type_specifier (cp_parser* parser,
 	  type = cp_parser_template_id (parser,
 					/*template_keyword_p=*/true,
 					/*check_dependency_p=*/true,
+					none_type,
 					/*is_declaration=*/false);
 	  /* If the template-id did not name a type, we are out of
 	     luck.  */
@@ -13811,6 +13820,7 @@ cp_parser_type_name (cp_parser* parser)
       type_decl = cp_parser_template_id (parser,
 					 /*template_keyword_p=*/false,
 					 /*check_dependency_p=*/false,
+					 none_type,
 					 /*is_declaration=*/false);
       /* Note that this must be an instantiation of an alias template
 	 because [temp.names]/6 says:
@@ -14035,6 +14045,7 @@ cp_parser_elaborated_type_specifier (cp_parser* parser,
       token = cp_lexer_peek_token (parser->lexer);
       decl = cp_parser_template_id (parser, template_p,
 				    /*check_dependency_p=*/true,
+				    tag_type,
 				    is_declaration);
       /* If we didn't find a template-id, look for an ordinary
 	 identifier.  */
@@ -17865,6 +17876,7 @@ cp_parser_class_name (cp_parser *parser,
       /* Try a template-id.  */
       decl = cp_parser_template_id (parser, template_keyword_p,
 				    check_dependency_p,
+				    tag_type,
 				    is_declaration);
       if (decl == error_mark_node)
 	return error_mark_node;
@@ -18317,7 +18329,7 @@ cp_parser_class_head (cp_parser* parser,
     = cp_parser_nested_name_specifier_opt (parser,
 					   /*typename_keyword_p=*/false,
 					   /*check_dependency_p=*/false,
-					   /*type_p=*/false,
+					   /*type_p=*/true,
 					   /*is_declaration=*/false);
   /* If there was a nested-name-specifier, then there *must* be an
      identifier.  */
@@ -18392,6 +18404,7 @@ cp_parser_class_head (cp_parser* parser,
       id = cp_parser_template_id (parser,
 				  /*template_keyword_p=*/false,
 				  /*check_dependency_p=*/true,
+				  class_key,
 				  /*is_declaration=*/true);
       /* If that didn't work, it could still be an identifier.  */
       if (!cp_parser_parse_definitely (parser))

gcc/testsuite/ChangeLog

+2012-06-27  Jason Merrill  <jason@redhat.com>
+
+	PR c++/53563
+	* g++.dg/parse/template27.C: New.
+	* g++.dg/template/crash74.C: Adjust expected output.
+
 2012-06-27  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/41951

gcc/testsuite/g++.dg/parse/template27.C

+// PR c++/53563
+
+template<class T>
+struct s
+{
+ template<class U>
+ s(){}
+};
+
+int main() {
+ struct s<void>::s<int> a;	// { dg-error "no match" }
+}

gcc/testsuite/g++.dg/template/crash74.C

@@ -2,5 +2,5 @@
 // { dg-do compile }
 // { dg-options "" }
 
-template<typename F> void foo () { }
-template<typename F> struct foo<F> { };	// { dg-error "redeclared as" }
+template<typename F> void foo () { } // { dg-prune-output "previous" }
+template<typename F> struct foo<F> { };	// { dg-error "template" }