[PR c++/71251] check tmpl parms in template using decl

Check that template using decls have the correct number of parm lists.

for  gcc/cp/ChangeLog

	PR c++/71251
	* parser.c (cp_parser_alias_declaration): Call
	parser_check_template_parameters.

for  gcc/testsuite/ChangeLog

	PR c++/71251
	* g++.dg/cpp0x/pr71251.C: New.

From-SVN: r258793

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 08ecf21..cdbbd41 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,4 +1,8 @@
-2018-03-22  Alexandre Oliva <aoliva@redhat.com>
+2018-03-23  Alexandre Oliva <aoliva@redhat.com>
+
+       PR c++/71251
+       * parser.c (cp_parser_alias_declaration): Call
+       parser_check_template_parameters.
 
        PR c++/84789
        * pt.c (resolve_typename_type): Drop assert that stopped

diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index fd81702..602cc99 100644 (file)
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -18965,6 +18965,13 @@ cp_parser_alias_declaration (cp_parser* parser)
                               ds_alias,
                               using_token);
 
+  if (parser->num_template_parameter_lists
+      && !cp_parser_check_template_parameters (parser,
+                                              /*num_templates=*/0,
+                                              id_location,
+                                              /*declarator=*/NULL))
+    return error_mark_node;
+
   declarator = make_id_declarator (NULL_TREE, id, sfk_none);
   declarator->id_loc = id_location;
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4875ce4..560e6d3 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,4 +1,7 @@
-2018-03-22  Alexandre Oliva <aoliva@redhat.com>
+2018-03-23  Alexandre Oliva <aoliva@redhat.com>
+
+       PR c++/71251
+       * g++.dg/cpp0x/pr71251.C: New.
 
        PR c++/84789
        * g++.dg/template/pr84789.C: New.

diff --git a/gcc/testsuite/g++.dg/cpp0x/pr71251.C b/gcc/testsuite/g++.dg/cpp0x/pr71251.C
new file mode 100644 (file)
index 0000000..3df831b
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/pr71251.C
@@ -0,0 +1,15 @@
+// { dg-do compile { target c++11 } }
+
+template<int,int> template<typename>
+using U = void; // { dg-error "too many" }
+
+template<typename>
+using V = void;
+
+template<typename> struct X {
+  template<typename> template<typename>
+  using U = void; // { dg-error "too many" }
+
+  template<typename>
+  using V = void;
+};