#1478: Dispatch::Queue#barrier_{sync, async} should check OS version at runtime ----------------------------------+----------------------------------------- Reporter: watson1978@… | Owner: lsansonetti@… Type: defect | Status: new Priority: minor | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- When runs MacRuby on OS X 10.6 which is built on OS X 10.7, Dispatch::Queue#barrier_{sync, async} cause crash. OS version check exists at compile-time. [[BR]] https://github.com/MacRuby/MacRuby/blob/master/gcd.c#L511-521 [[BR]] https://github.com/MacRuby/MacRuby/blob/master/gcd.c#L544-554 I think these methods also need to check at runtime. {{{ gcdq = Dispatch::Queue.concurrent('org.macruby.documentation') p gcdq.class @i = "" gcdq.barrier_sync { @i += 'c' } gcdq.barrier_async { @i += 'c' } }}} {{{ $ uname -a Darwin watson.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386 $ macruby t.rb dyld: Symbol not found: __dispatch_queue_attr_concurrent Referenced from: /Library/Frameworks/MacRuby.framework/Versions/0.12/usr/lib/libmacruby.dylib Expected in: flat namespace in /Library/Frameworks/MacRuby.framework/Versions/0.12/usr/lib/libmacruby.dylib zsh: trace trap macruby t.rb }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1478> MacRuby <http://macruby.org/>