pt.c (determine_specialization): Print candidates after 'no match' error.

	* pt.c (determine_specialization): Print candidates after 'no
	match' error.

From-SVN: r226653

gcc/cp/ChangeLog

 2015-08-05  Jason Merrill  <jason@redhat.com>
 
+	* pt.c (determine_specialization): Print candidates after 'no
+	match' error.
+
 	* decl.c (cp_finish_decl): Tidy.
 	* typeck.c (finish_class_member_access_expr): Use
 	type_dependent_expression_p.

gcc/cp/pt.c

@@ -1952,6 +1952,8 @@ determine_specialization (tree template_id,
        b = b->level_chain)
     ++header_count;
 
+  tree orig_fns = fns;
+
   if (variable_template_p (fns))
     {
       tree parms = INNERMOST_TEMPLATE_PARMS (DECL_TEMPLATE_PARMS (fns));
@@ -2168,6 +2170,8 @@ determine_specialization (tree template_id,
 	inform (input_location, "saw %d %<template<>%>, need %d for "
 		"specializing a member function template",
 		header_count, template_count + 1);
+      else
+	print_candidates (orig_fns);
       return error_mark_node;
     }
   else if ((templates && TREE_CHAIN (templates))

gcc/testsuite/g++.dg/template/spec39.C

+template <class T> void f(T);	// { dg-message "void f" }
+template <> int f(int);		// { dg-error "does not match" }
+