Hi K, I met similar problem in Cygwin porting.
I think it will be resolved by defining the typealias with #if/#endif, _stdlib_pthread_attr_t = UnsafePointer<pthread_attr_t?>. Please reference my PR for Cygwin. https://github.com/apple/swift/pull/3886/files#diff-99fd89ad44c4466de8ad6b8aab9c207d Thanks Han Sangjin 2016-09-19 5:08 GMT+09:00 K Staring via swift-dev <[email protected]>: > Hi, > > While trying to port the current swift code to FreeBSD, some swift code > fails to compile. The failures are concentrated in > SwiftPrivatePthreadExtras.swift and code which depends on it. > > Can someone shed some light on the following errors? I am having some > difficulty understanding why the C headers would be interpreted so slightly > differently than expected? > > --(start compile failure) > /home/qdk/src/swift-source/swift/stdlib/private/SwiftPrivatePthreadExtras/ > SwiftPrivatePthreadExtras.swift:75:42: error: cannot convert value of > type 'UnsafePointer<pthread_attr_t>?' to expected argument type > 'UnsafePointer<pthread_attr_t?>!' > let result = pthread_create(&threadID, attr, > ^~~~ > /home/qdk/src/swift-source/swift/stdlib/private/SwiftPrivatePthreadExtras/PthreadBarriers.swift:72:46: > error: cannot convert value of type 'UnsafeMutablePointer<pthread_mutex_t>' > (aka 'UnsafeMutablePointer<OpaquePointer>') to expected argument type > 'UnsafeMutablePointer<pthread_mutex_t?>' (aka 'UnsafeMutablePointer< > Optional<OpaquePointer>>') > if pthread_mutex_init(barrier.pointee.mutex!, nil) != 0 { > ~~~~~~~~~~~~~~~~~~~~~^ > /home/qdk/src/swift-source/swift/stdlib/private/SwiftPrivatePthreadExtras/PthreadBarriers.swift:77:44: > error: cannot convert value of type 'UnsafeMutablePointer<pthread_cond_t>' > (aka 'UnsafeMutablePointer<OpaquePointer>') to expected argument type > 'UnsafeMutablePointer<pthread_cond_t?>' (aka 'UnsafeMutablePointer< > Optional<OpaquePointer>>') > if pthread_cond_init(barrier.pointee.cond!, nil) != 0 { > ~~~~~~~~~~~~~~~~~~~~^ > > --(end compile failure) > > Thanks for any suggestions or pointers! > > -- > Kind regards, > > K Staring <[email protected]> > > > _______________________________________________ > swift-dev mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-dev >
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