stack effects + optimize exefn

1 files changed, 1 insertions, 1 deletions

diff --git a/repl.c b/repl.c
index 9aa7bab..dcdb381 100644
--- a/repl.c
+++ b/repl.c
@@ -51,7 +51,7 @@ main(int argc, char **argv) {
             if (!strcmp(arg, "-h") || !strcmp(arg, "--help")) {
                 help();
                 goto Bye;
-            } else if (arg[1] == 'd') {
+            } else if (arg[1] == 'd' && arg[2]) {
                 pez_debug(cx, arg + 2);
             } else {
                 printf("pez: Invalid option '%s'\n", arg);