re PR c++/51314 ([C++0x] sizeof... and parentheses)

	PR c++/51314
	* parser.c (cp_parser_sizeof_operand): Require parentheses for
	sizeof...

From-SVN: r186988

gcc/cp/ChangeLog

+2012-04-30  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/51314
+	* parser.c (cp_parser_sizeof_operand): Require parentheses for
+	sizeof...
+
 2012-04-30  Dodji Seketeli  <dodji@redhat.com>
 
 	Fix location for static class members

gcc/cp/parser.c

@@ -21969,6 +21969,9 @@ cp_parser_sizeof_operand (cp_parser* parser, enum rid keyword)
 				 /*attrlist=*/NULL);
 	}
     }
+  else if (pack_expansion_p)
+    permerror (cp_lexer_peek_token (parser->lexer)->location,
+	       "%<sizeof...%> argument must be surrounded by parentheses");
 
   /* If the type-id production did not work out, then we must be
      looking at the unary-expression production.  */

gcc/testsuite/ChangeLog

+2012-04-30  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/51314
+	* g++.dg/cpp0x/vt-51314.C: New test.
+	* g++.dg/cpp0x/variadic76.C: Fix.
+
 2012-04-30  Greta Yorsh  <Greta.Yorsh@arm.com>
 
 	* gcc.dg/pr52283.c: Add missing dg-warning and dg-options.

gcc/testsuite/g++.dg/cpp0x/variadic76.C

@@ -4,7 +4,8 @@
 
 template<int... N> int foo ()
 {
-  return sizeof... N ();	// { dg-error "cannot be used as a function" }
+  return sizeof... (N ());	// { dg-error "cannot be used as a function" }
+  return sizeof... (N) ();	// { dg-error "cannot be used as a function" }
 }
 
 int bar ()