Is __attribute((noescape)) — the Objective-C equivalent of Swift’s @noescape attribute — fully implemented yet (as of Xcode 7)? I’m trying to use it to avoid that pesky “capturing 'self' strongly in this block is likely to lead to a retain cycle” error.
I’ve got a method declared like so, with the ‘noescape’ attribute on the block parameter: - (BOOL) addBytes: (const void*)bytes length: (size_t)length onOutput: (__attribute__((noescape)) void(^)(const void*,size_t))onOutput; Then I call the method from another method like so: [_zipper addBytes: data.bytes length: data.length onOutput: ^(const void *bytes, size_t length) { [_writer appendData: [[NSData alloc] initWithBytes .... But I still get the retain-cycle error, even though the compiler/analyzer should be able to tell that no retain cycle is possible since it’s been promised that no one will hold onto a reference to the block. I’ve tried this with Xcode 6.4 and Xode 7 beta 4 and get the same results. Should I file a Radar or is this already known? —Jens
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