diff options
| -rw-r--r-- | mrbgems/mruby-fiber/src/fiber.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mrbgems/mruby-fiber/src/fiber.c b/mrbgems/mruby-fiber/src/fiber.c index bd1d09d43..bc1d82bbc 100644 --- a/mrbgems/mruby-fiber/src/fiber.c +++ b/mrbgems/mruby-fiber/src/fiber.c @@ -188,9 +188,13 @@ fiber_switch(mrb_state *mrb, mrb_value self, mrb_int len, const mrb_value *a, mr mrb->c->status = resume ? MRB_FIBER_RESUMED : MRB_FIBER_TRANSFERRED; c->prev = resume ? mrb->c : (c->prev ? c->prev : mrb->root_c); if (c->status == MRB_FIBER_CREATED) { - mrb_value *b = c->stack+1; - mrb_value *e = b + len; + mrb_value *b, *e; + if (len > c->stend - c->stack) { + mrb_raise(mrb, E_FIBER_ERROR, "too many arguments to fiber"); + } + b = c->stack+1; + e = b + len; while (b<e) { *b++ = *a++; } |