error.c (dump_type_real): If a typename is a template-id, put out the template arguments.

	* error.c (dump_type_real): If a typename is a template-id, put
	out the template arguments.
	(dump_expr): Handle TEMPLATE_ID_EXPR.
	* pt.c (lookup_template_class): Now that full arguments are
	available everywhere, remove code that tried to guess them.

From-SVN: r26335

gcc/cp/ChangeLog

+1999-04-10  Mark Mitchell  <mark@codesourcery.com>
+
+	* error.c (dump_type_real): If a typename is a template-id, put
+	out the template arguments.
+	(dump_expr): Handle TEMPLATE_ID_EXPR.
+	* pt.c (lookup_template_class): Now that full arguments are
+	available everywhere, remove code that tried to guess them.
+
 1999-04-09  Mark Mitchell  <mark@codesourcery.com>
 
 	* decl.c (make_typename_type): Complain if we don't find a type

gcc/cp/error.c

@@ -321,7 +321,7 @@ dump_type_real (t, v, canonical_name)
       OB_PUTS ("typename ");
       dump_type_real (TYPE_CONTEXT (t), 0, canonical_name);
       OB_PUTS ("::");
-      OB_PUTID (TYPE_IDENTIFIER (t));
+      dump_decl (TYPENAME_TYPE_FULLNAME (t), v);
       break;
 
     case TYPEOF_TYPE:
@@ -1766,6 +1766,10 @@ dump_expr (t, nop)
       dump_expr (TREE_OPERAND (t, 0), nop);
       break;
 
+    case TEMPLATE_ID_EXPR:
+      dump_decl (t, 0);
+      break;
+
     case TREE_LIST:
       if (TREE_VALUE (t) && TREE_CODE (TREE_VALUE (t)) == FUNCTION_DECL)
 	{

gcc/cp/pt.c

@@ -3568,9 +3568,9 @@ lookup_template_class (d1, arglist, in_decl, context, entering_scope)
 	  if (context)
 	    push_decl_namespace (context);
 	  if (current_class_type != NULL_TREE)
-	    template = 
+	    template =
 	      maybe_get_template_decl_from_type_decl
-	      (IDENTIFIER_CLASS_VALUE (d1));
+	      (IDENTIFIER_CLASS_VALUE (d1)));
 	  if (template == NULL_TREE)
 	    template = lookup_name_nonclass (d1);
 	  if (context)
@@ -3650,14 +3650,15 @@ lookup_template_class (d1, arglist, in_decl, context, entering_scope)
   else 
     {
       tree template_type = TREE_TYPE (template);
+      tree gen_tmpl;
       tree type_decl;
       tree found = NULL_TREE;
       int arg_depth;
       int parm_depth;
       int is_partial_instantiation;
 
-      template = most_general_template (template);
-      parmlist = DECL_TEMPLATE_PARMS (template);
+      gen_tmpl = most_general_template (template);
+      parmlist = DECL_TEMPLATE_PARMS (gen_tmpl);
       parm_depth = TMPL_PARMS_DEPTH (parmlist);
       arg_depth = TMPL_ARGS_DEPTH (arglist);
 
@@ -3679,36 +3680,19 @@ lookup_template_class (d1, arglist, in_decl, context, entering_scope)
 	     TEMPLATE will be `template <class T> template
 	     <class U> struct S1<T>::S2'.  We must fill in the missing
 	     arguments.  */
-	  my_friendly_assert (context != NULL_TREE, 0);
-	  while (!IS_AGGR_TYPE_CODE (TREE_CODE (context))
-		 && context != global_namespace)
-	    context = DECL_REAL_CONTEXT (context);
-
-	  if (context == global_namespace)
-	    /* This is bad.  We cannot get enough arguments, even from
-	       the surrounding context, to resolve this class.  One
-	       case where this might happen is (illegal) code like:
-
-	           template <class U> 
-		   template <class T>
-		   struct S { 
-		     A(const A<T>& a) {}
-		   };  
-	    
-	       We should catch this error sooner (at the opening curly
-	       for `S', but it is better to be safe than sorry here.  */
-	    {
-	      cp_error ("invalid use of `%D'", template);
-	      return error_mark_node;
-	    }
-
-	  arglist = add_to_template_args (TYPE_TI_ARGS (context),
-					  arglist);
+	  arglist 
+	    = add_outermost_template_args (TYPE_TI_ARGS (TREE_TYPE (template)),
+					   arglist);
 	  arg_depth = TMPL_ARGS_DEPTH (arglist);
 	}
 
+      /* Now we should enough arguments.  */
       my_friendly_assert (parm_depth == arg_depth, 0);
       
+      /* From here on, we're only interested in the most general
+	 template.  */
+      template = gen_tmpl;
+
       /* Calculate the BOUND_ARGS.  These will be the args that are
 	 actually tsubst'd into the definition to create the
 	 instantiation.  */

gcc/testsuite/g++.old-deja/g++.pt/memclass20.C

+// Build don't link:
+// Origin: Mark Mitchell <mark@codesourcery.com>
+
+template <class X, class Y>
+struct S{};
+
+template <class X> 
+struct S<int, X> {
+  template <class W>
+  struct I {};
+};
+
+template <class T>
+void f() {
+  typename S<T, T>::I<T> si;
+}
+
+template void f<int>();