glcpp: Complain about unrecognized directives.

diff --git a/glcpp/glcpp-parse.y b/glcpp/glcpp-parse.y
index f9fab8b..fde9b92 100644 (file)
--- a/glcpp/glcpp-parse.y
+++ b/glcpp/glcpp-parse.y
@@ -360,7 +360,9 @@ text_line:
 ;
 
 non_directive:
-       pp_tokens NEWLINE
+       pp_tokens NEWLINE {
+               yyerror (parser, "Invalid tokens after #");
+       }
 ;
 
 replacement_list: