glcpp: Ignore junk tokens at end of #ifdef/#ifndef (with warning)

Both nVidia's compiler and GCC accept this.
Fixes CorrectPreprocess11.frag.

diff --git a/glcpp/glcpp-parse.y b/glcpp/glcpp-parse.y
index c70370a..035a5c8 100644 (file)
--- a/glcpp/glcpp-parse.y
+++ b/glcpp/glcpp-parse.y
@@ -232,12 +232,12 @@ control_line:
                _token_list_append_list (expanded, $2);
                glcpp_parser_lex_from (parser, expanded);
        }
-|      HASH_IFDEF IDENTIFIER NEWLINE {
+|      HASH_IFDEF IDENTIFIER junk NEWLINE {
                macro_t *macro = hash_table_find (parser->defines, $2);
                talloc_free ($2);
                _glcpp_parser_skip_stack_push_if (parser, & @1, macro != NULL);
        }
-|      HASH_IFNDEF IDENTIFIER NEWLINE {
+|      HASH_IFNDEF IDENTIFIER junk NEWLINE {
                macro_t *macro = hash_table_find (parser->defines, $2);
                talloc_free ($2);
                _glcpp_parser_skip_stack_push_if (parser, & @1, macro == NULL);
@@ -377,6 +377,12 @@ replacement_list:
 |      pp_tokens
 ;
 
+junk:
+       /* empty */
+|      pp_tokens {
+               glcpp_warning(&@1, parser, "extra tokens at end of directive");
+       }
+
 pp_tokens:
        preprocessing_token {
                parser->space_tokens = 1;