In HuonW’s recent pull request <https://github.com/apple/swift/pull/4814> we
hit an unusual error <https://ci.swift.org/job/swift-PR-osx/3922/>:
> 2016-10-03 12:34:08.112 swift[56714:13650955] *** Terminating app due to
> uncaught exception 'NSInvalidArgumentException', reason: '*** -length only
> defined for abstract class. Define -[_TtCs19_NSContiguousString length]!'
> *** First throw call stack:
> (
> 0 CoreFoundation 0x00007fff9cbe64f2
> __exceptionPreprocess + 178
> 1 libobjc.A.dylib 0x00007fff9daaa73c
> objc_exception_throw + 48
> 2 CoreFoundation 0x00007fff9cc4d4bd
> +[NSException raise:format:] + 205
> 3 Foundation 0x00007fff943e8dbd
> NSRequestConcreteImplementation + 229
> 4 Foundation 0x00007fff9442588a -[NSString
> length] + 19
> 5 CoreFoundation 0x00007fff9cc2b613
> CFStringHashNSString + 51
> 6 libswiftCore.dylib 0x0000000114f7ef56
> _TTSfq4s___TFSSg9hashValueSi + 118
> 7 libswiftCore.dylib 0x0000000114f3b96b
> _TTWSSs8HashablesFS_g9hashValueSi + 43
> 8 libswiftCore.dylib 0x0000000114e8f0a2
> _TFVs24_NativeDictionaryStorage7_bucketfxSi + 34
We’re not really sure how this could happen, though. _NSContiguousString
certainly does implement -length
<https://github.com/apple/swift/blob/master/stdlib/public/core/StringBridge.swift#L221>,
and even though there’s an outstanding PR
<https://github.com/apple/swift/pull/5071> to change it to a property that
shouldn’t cause this kind of issue. (It’s not marked @objc, but it shouldn’t
need to be because the superclass is
<https://github.com/apple/swift/blob/master/stdlib/public/core/StringBridge.swift#L184-L191>.)
Anyone know what’s going on here?
Jordan
_______________________________________________
swift-dev mailing list
swift-dev@swift.org
https://lists.swift.org/mailman/listinfo/swift-dev
