-Wextensions on by default

diff --git a/main.c b/main.c
index c2e7a8d6cc842fa3af86aa51d62de288ffeb2a14..06e036d280e64d0c6a6aca45727e5e4e8acbe491 100644 (file)
--- a/main.c
+++ b/main.c
@@ -336,6 +336,7 @@ int main(int argc, char **argv) {
 
     /* default options / warn flags */
     options_set(opts_warn, WARN_UNKNOWN_CONTROL_SEQUENCE, true);
+    options_set(opts_warn, WARN_EXTENSIONS, true);
 
     if (!options_parse(argc, argv)) {
         return usage();