Index: libcpp/macro.c
===================================================================
--- libcpp/macro.c	(revision 209800)
+++ libcpp/macro.c	(working copy)
@@ -2794,14 +2794,12 @@ parse_params (cpp_reader *pfile, cpp_mac
 				   pfile->spec_nodes.n__VA_ARGS__);
 	      pfile->state.va_args_ok = 1;
 	      if (! CPP_OPTION (pfile, c99)
-		  && CPP_OPTION (pfile, cpp_pedantic)
 		  && CPP_OPTION (pfile, warn_variadic_macros))
 		cpp_pedwarning
                   (pfile, CPP_W_VARIADIC_MACROS,
 		   "anonymous variadic macros were introduced in C99");
 	    }
-	  else if (CPP_OPTION (pfile, cpp_pedantic)
-		   && CPP_OPTION (pfile, warn_variadic_macros))
+	  else if (CPP_OPTION (pfile, warn_variadic_macros))
 	    cpp_pedwarning (pfile, CPP_W_VARIADIC_MACROS,
 		            "ISO C does not permit named variadic macros");
 
Index: gcc/c-family/c-opts.c
===================================================================
--- gcc/c-family/c-opts.c	(revision 209800)
+++ gcc/c-family/c-opts.c	(working copy)
@@ -396,6 +396,10 @@ c_common_handle_option (size_t scode, co
       cpp_opts->cpp_warn_long_long = value;
       break;
 
+    case OPT_Wvariadic_macros:
+      cpp_opts->warn_variadic_macros = value;
+      break;
+
     case OPT_Wmissing_include_dirs:
       cpp_opts->warn_missing_include_dirs = value;
       break;
@@ -1227,8 +1231,9 @@ sanitize_cpp_opts (void)
 
   /* Similarly with -Wno-variadic-macros.  No check for c99 here, since
      this also turns off warnings about GCCs extension.  */
-  cpp_opts->warn_variadic_macros
-    = cpp_warn_variadic_macros && (pedantic || warn_traditional);
+  if (cpp_warn_variadic_macros == -1)
+    cpp_warn_variadic_macros = pedantic || warn_traditional;
+  cpp_opts->warn_variadic_macros = cpp_warn_variadic_macros;
 
   /* If we're generating preprocessor output, emit current directory
      if explicitly requested or if debugging information is enabled.
Index: gcc/c-family/c.opt
===================================================================
--- gcc/c-family/c.opt	(revision 209800)
+++ gcc/c-family/c.opt	(working copy)
@@ -509,6 +509,9 @@ Warn about missing fields in struct init
 Wsizeof-pointer-memaccess
 C ObjC C++ ObjC++ Var(warn_sizeof_pointer_memaccess) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
 
+Wsizeof-array-argument
+C Var(warn_sizeof_array_argument) Warning LangEnabledBy(C,Wall)
+
 Wsuggest-attribute=format
 C ObjC C++ ObjC++ Var(warn_suggest_attribute_format) Warning
 Warn about functions which might be candidates for format attributes
@@ -785,7 +788,7 @@ C ObjC C++ ObjC++ Var(warn_unused_result
 Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value
 
 Wvariadic-macros
-C ObjC C++ ObjC++ Var(cpp_warn_variadic_macros) Init(1) Warning
+C ObjC C++ ObjC++ Var(cpp_warn_variadic_macros) Init(-1) Warning
 Warn about using variadic macros
 
 Wvarargs
Index: gcc/testsuite/gcc.dg/cpp/Wvariadic-5.c
===================================================================
--- gcc/testsuite/gcc.dg/cpp/Wvariadic-5.c	(revision 0)
+++ gcc/testsuite/gcc.dg/cpp/Wvariadic-5.c	(working copy)
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-options "-std=iso9899:1990 -Wvariadic-macros" } */
+
+#define f(x,...)	/* { dg-warning "variadic" } */
+#define g(x,y...)	/* { dg-warning "variadic" } */
+int not_empty;