Bug #3781: FIBER_USE_NATIVE $B$,M-8z$@$HMn$A$k%9%/%j%W%H$,$"$k(B
http://redmine.ruby-lang.org/issues/show/3781
$B5/I<<T(B: Makoto K.
$B%9%F!<%?%9(B: Open, $BM%@john(B: Normal
$B%+%F%4%j(B: core, Target version: 1.9.3
ruby -v: ruby 1.9.3dev (2010-09-01 trunk 29159) [x86_64-freebsd8.0]
$B<j85$N%9%/%j%W%H!J:F8