Re: [C PATCH] Make attributes accept enum values (PR c/50459)

[Jason Merrill]

On 04/17/2014 12:00 PM, Marek Polacek wrote:
                      == CPP_CLOSE_PAREN)))
            {
              tree arg1 = c_parser_peek_token (parser)->value;
+             if (!attr_takes_id_p)
+               {
+                 /* This is for enum values, so that they can be used as
+                    an attribute parameter; lookup_name will find their
+                    CONST_DECLs.  */
+                 tree ln = lookup_name (arg1);
+                 if (ln)
+                   arg1 = ln;
+               }
              c_parser_consume_token (parser);

Instead, we should add !attr_takes_id_p to the if condition immediately 
above so that we parse the arguments as an expression-list.

Jason