Call `va_end()` before return
The behavior when returning from a function without `va_end()` is
undefined.
MODIFY
src/class.c
src/class.c
@@ -897,7 +897,7 @@ mrb_get_args(mrb_state *mrb, const char *format, ...)
}
break;
case '|':
- if (opt_skip && i == argc) return argc;
+ if (opt_skip && i == argc) goto finish;
opt = TRUE;
break;
case '?':
@@ -1004,6 +1004,8 @@ mrb_get_args(mrb_state *mrb, const char *format, ...)
if (!c && argc > i) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "wrong number of arguments");
}
+
+finish:
va_end(ap);
return i;
}

Call `va_end()` before return

The behavior when returning from a function without `va_end()` is
undefined.