Eliminate a reduce/reduce conflict in the function-like macro production.

Previously, an empty argument could be parsed as either an "argument_list"
directly or first as an "argument" and then an "argument_list".

We fix this by removing the possibility of an empty "argument_list"
directly.

diff --git a/glcpp-parse.y b/glcpp-parse.y
index 2e40db5..66725db 100644 (file)
--- a/glcpp-parse.y
+++ b/glcpp-parse.y
@@ -121,10 +121,7 @@ macro:
 ;
 
 argument_list:
-       /* empty */ {
-               $$ = _list_create (parser);
-       }
-|      argument {
+       argument {
                $$ = _list_create (parser);
                _list_append_list ($$, $1);
        }