re PR c++/59296 ([c++11] ref-qualified member function is ambiguous)

	PR c++/59296
	* call.c (add_function_candidate): Set LOOKUP_NO_RVAL_BIND for
	ref-qualifier handling.

From-SVN: r211809

gcc/cp/ChangeLog

 2014-06-18  Jason Merrill  <jason@redhat.com>
 
+	PR c++/59296
+	* call.c (add_function_candidate): Set LOOKUP_NO_RVAL_BIND for
+	ref-qualifier handling.
+
 	PR c++/61507
 	* pt.c (resolve_overloaded_unification): Preserve
 	ARGUMENT_PACK_EXPLICIT_ARGS.

gcc/cp/call.c

@@ -2025,6 +2025,8 @@ add_function_candidate (struct z_candidate **candidates,
 		     object parameter has reference type.  */
 		  bool rv = FUNCTION_RVALUE_QUALIFIED (TREE_TYPE (fn));
 		  parmtype = cp_build_reference_type (parmtype, rv);
+		  /* Don't bind an rvalue to a const lvalue ref-qualifier.  */
+		  lflags |= LOOKUP_NO_RVAL_BIND;
 		}
 	      else
 		{

gcc/testsuite/g++.dg/cpp0x/ref-qual15.C

+// PR c++/59296
+// { dg-do compile { target c++11 } }
+
+struct Type
+{
+  void get() const& { }
+  void get() const&& { }
+};
+
+int main()
+{
+  Type{}.get();
+}