pt.c (check_explicit_specialization): If DECLARATOR turned into an…

pt.c (check_explicit_specialization): If DECLARATOR turned into an error_mark_node from lookup_template_function...

	* pt.c (check_explicit_specialization): If DECLARATOR turned into
	an error_mark_node from lookup_template_function, return the same.
	(determine_specialization): Also make sure TEMPLATE_ID isn't an
	error_mark_node, before we try to read its operands.
	* decl.c (grokdeclarator): If we got an error_mark_node from
	check_explicit_specialization, just return it right back.

From-SVN: r20444

gcc/cp/ChangeLog

+1998-06-12  Brendan Kehoe  <brendan@cygnus.com>
+
+	* pt.c (check_explicit_specialization): If DECLARATOR turned into
+	an error_mark_node from lookup_template_function, return the same.
+	(determine_specialization): Also make sure TEMPLATE_ID isn't an
+	error_mark_node, before we try to read its operands.
+	* decl.c (grokdeclarator): If we got an error_mark_node from
+	check_explicit_specialization, just return it right back.
+
 1998-06-12  Mark Mitchell  <mark@markmitchell.com>
 
 	* class.c (instantiate_type): Don't treat template-ids that don't

gcc/cp/decl.c

@@ -10193,6 +10193,11 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
 	if (decl == NULL_TREE)
 	  return NULL_TREE;
 
+	/* Among other times, could occur from check_explicit_specialization
+	   returning an error_mark_node.  */
+	if (decl == error_mark_node)
+	  return error_mark_node;
+
 	if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c
 	    && (! DECL_USE_TEMPLATE (decl) ||
 		name_mangling_version < 1)) 

gcc/cp/pt.c

@@ -784,14 +784,19 @@ determine_specialization (template_id, decl, targs_out,
      int need_member_template;
      int complain;
 {
-  tree fns = TREE_OPERAND (template_id, 0);
-  tree targs_in = TREE_OPERAND (template_id, 1);
+  tree fns, targs_in;
   tree templates = NULL_TREE;
   tree fn;
   int i;
 
   *targs_out = NULL_TREE;
 
+  if (template_id == error_mark_node)
+    return error_mark_node;
+
+  fns = TREE_OPERAND (template_id, 0);
+  targs_in = TREE_OPERAND (template_id, 1);
+
   if (fns == error_mark_node)
     return error_mark_node;
 
@@ -1084,7 +1089,10 @@ check_explicit_specialization (declarator, decl, template_count, flags)
 	    lookup_template_function (fns, NULL_TREE);
 	}
 
-      if (TREE_CODE (TREE_OPERAND (declarator, 0)) == LOOKUP_EXPR) 
+      if (declarator == error_mark_node)
+	return error_mark_node;
+
+      if (TREE_CODE (TREE_OPERAND (declarator, 0)) == LOOKUP_EXPR)
 	{
 	  /* A friend declaration.  We can't do much, because we don't
 	   know what this resolves to, yet.  */