diff options
| -rw-r--r-- | glcpp-parse.y | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/glcpp-parse.y b/glcpp-parse.y index b2684d0..ba79a61 100644 --- a/glcpp-parse.y +++ b/glcpp-parse.y @@ -666,6 +666,9 @@ _token_list_append (token_list_t *list, token_t *token) void _token_list_append_list (token_list_t *list, token_list_t *tail) { + if (tail == NULL || tail->head == NULL) + return; + if (list->head == NULL) { list->head = tail->head; } else { @@ -1218,7 +1221,7 @@ _glcpp_parser_expand_token_list_onto (glcpp_parser_t *parser, token_list_t *intermediate, *list_orig = list; int i, need_rescan = 0; - if (list == NULL) + if (list == NULL || list->head == NULL) return; intermediate = _token_list_create (parser); |