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Raise an exception when transfer arguments are too many; fix #3641

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The fix was proposed by @block8437.  Thank you.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2017-05-25 21:39:13 +09:00
parent de48d95c6d
commit ac442bc1df
1 changed files with 6 additions and 2 deletions
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mrbgems/mruby-fiber/src/fiber.c
+6 -2
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@@ -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++;
}