re PR c++/51420 ([c++0x] ICE with invalid user-defined literals)

	PR c++/51420
	* parser.c (lookup_literal_operator): Check that declaration is an
	overloaded function.

From-SVN: r182083

gcc/cp/ChangeLog

+2011-12-07  Ed Smith-Rowland <3dw4rd@verizon.net>
+
+	PR c++/51420
+	* parser.c (lookup_literal_operator): Check that declaration is an
+	overloaded function.
+
 2011-12-06  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/51430

gcc/cp/parser.c

@@ -3554,7 +3554,7 @@ lookup_literal_operator (tree name, VEC(tree,gc) *args)
 {
   tree decl, fns;
   decl = lookup_name (name);
-  if (!decl || decl == error_mark_node)
+  if (!decl || !is_overloaded_fn (decl))
     return error_mark_node;
 
   for (fns = decl; fns; fns = OVL_NEXT (fns))

gcc/testsuite/ChangeLog

+2011-12-07  Ed Smith-Rowland <3dw4rd@verizon.net>
+
+	PR c++/51420
+	* g++.dg/cpp0x/pr51420.C: New.
+
 2011-12-07  Richard Guenther  <rguenther@suse.de>
 
 	PR lto/48100

gcc/testsuite/g++.dg/cpp0x/pr51420.C

+// { dg-options "-std=c++11" }
+
+void
+foo()
+{
+  float x = operator"" _F();  //  { dg-error  "was not declared in this scope" }
+  float y = 0_F;  //  { dg-error  "unable to find numeric literal operator" }
+}