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-rw-r--r--tools/mruby/mruby.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/mruby/mruby.c b/tools/mruby/mruby.c
index df69c62c2..5de161def 100644
--- a/tools/mruby/mruby.c
+++ b/tools/mruby/mruby.c
@@ -105,7 +105,8 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
}
- if (args->rfp == NULL && args->cmdline == NULL && (args->rfp = fopen(*argv, args->mrbfile ? "rb" : "r")) == NULL) {
+ if (args->rfp == NULL && args->cmdline == NULL &&
+ (*argv == NULL || (args->rfp = fopen(*argv, args->mrbfile ? "rb" : "r")) == NULL)) {
printf("%s: Cannot open program file. (%s)\n", *origargv, *argv);
return 0;
}