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* reduce UNREACHABLE.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35358 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2012-04-17 04:55:10 +00:00
parent 854a6e47a5
commit 485f88e62e
1 changed files with 6 additions and 9 deletions
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15
cont.c
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@ -1093,25 +1093,22 @@ return_fiber(void)
{ {
rb_fiber_t *fib; rb_fiber_t *fib;
VALUE curr = rb_fiber_current(); VALUE curr = rb_fiber_current();
VALUE prev;
GetFiberPtr(curr, fib); GetFiberPtr(curr, fib);
if (fib->prev == Qnil) { prev = fib->prev;
rb_thread_t *th = GET_THREAD(); if (NIL_P(prev)) {
const VALUE root_fiber = GET_THREAD()->root_fiber;
if (th->root_fiber != curr) { if (root_fiber == curr) {
return th->root_fiber;
}
else {
rb_raise(rb_eFiberError, "can't yield from root fiber"); rb_raise(rb_eFiberError, "can't yield from root fiber");
} }
return root_fiber;
} }
else { else {
VALUE prev = fib->prev;
fib->prev = Qnil; fib->prev = Qnil;
return prev; return prev;
} }
UNREACHABLE;
} }
VALUE rb_fiber_transfer(VALUE fib, int argc, VALUE *argv); VALUE rb_fiber_transfer(VALUE fib, int argc, VALUE *argv);