parse.y (unary_expr): Give a pedwarn if someone tries to use the &&label GNU extension.

	* parse.y (unary_expr): Give a pedwarn if someone tries to use the
	&&label GNU extension.

From-SVN: r15907

gcc/cp/ChangeLog

+1997-10-14  Brendan Kehoe  <brendan@lisa.cygnus.com>
+
+	* parse.y (unary_expr): Give a pedwarn if someone tries to use the
+	&&label GNU extension.
+
 Tue Oct 14 12:01:00 1997  Mark Mitchell  <mmitchell@usa.net>
 
 	* decl.c (pushtag): Unset DECL_ASSEMBLER_NAME before setting it,

gcc/cp/parse.y

@@ -1088,6 +1088,8 @@ unary_expr:
 	/* Refer to the address of a label as a pointer.  */
 	| ANDAND identifier
 		{ tree label = lookup_label ($2);
+		  if (pedantic)
+		    pedwarn ("ANSI C++ forbids `&&'");
 		  if (label == NULL_TREE)
 		    $$ = null_pointer_node;
 		  else