re PR c++/48280 ([C++0x] ICE: tree check: expected var_decl or function_decl,…

re PR c++/48280 ([C++0x] ICE: tree check: expected var_decl or function_decl, have template_decl in check_bases_and_members, at cp/class.c:4695)

	PR c++/48280
	* method.c (defaultable_fn_check): Templates are not defaultable.

From-SVN: r171797

gcc/cp/ChangeLog

 2011-03-31  Jason Merrill  <jason@redhat.com>
 
+	PR c++/48280
+	* method.c (defaultable_fn_check): Templates are not defaultable.
+
 	* parser.c (cp_parser_init_declarator): Avoid redundant
 	cp_finish_decl for member declarations.
 

gcc/cp/method.c

@@ -1588,6 +1588,12 @@ defaultable_fn_check (tree fn)
 {
   special_function_kind kind = sfk_none;
 
+  if (template_parm_scope_p ())
+    {
+      error ("a template cannot be defaulted");
+      return false;
+    }
+
   if (DECL_CONSTRUCTOR_P (fn))
     {
       if (FUNCTION_FIRST_USER_PARMTYPE (fn) == void_list_node)

gcc/testsuite/ChangeLog

+2011-03-31  Jason Merrill  <jason@redhat.com>
+
+	* g++.dg/cpp0x/defaulted24.C: New.
+
 2011-03-31  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR target/16292

gcc/testsuite/g++.dg/cpp0x/defaulted24.C

+// PR c++/48280
+// { dg-options -std=c++0x }
+
+struct S {
+  template < typename > S (const S &) = default; // { dg-error "" }
+};