#540: segfault with NSURLDownload with GC on -------------------------------------+-------------------------------------- Reporter: mattaimonetti@… | Owner: mattaimonetti@… Type: defect | Status: new Priority: major | Milestone: MacRuby 0.5 Component: MacRuby | Keywords: -------------------------------------+-------------------------------------- Script: https://gist.github.com/96954a4e59f1293977c0 Backtrace: {{{ Application Specific Information: objc_msgSend() selector name: _downloadActive objc[74889]: garbage collection is ON Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff8821011c objc_msgSend + 40 1 com.apple.Foundation 0x00007fff84db156d _NSURLDownloadDidReceiveData + 45 2 com.apple.CFNetwork 0x00007fff8143b50f URLDownload::sendClientDidReceiveData(long, long, long) + 83 3 com.apple.CFNetwork 0x00007fff8143cd9c ___asyncWrite_block_invoke_4 + 121 4 com.apple.CoreFoundation 0x00007fff8060c1b9 __CFRunLoopDoBlocks + 297 5 com.apple.CoreFoundation 0x00007fff805cece6 __CFRunLoopRun + 3046 6 com.apple.CoreFoundation 0x00007fff805cdc2f CFRunLoopRunSpecific + 575 7 com.apple.Foundation 0x00007fff84c94a24 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 270 8 com.apple.Foundation 0x00007fff84ce048a -[NSRunLoop(NSRunLoop) runUntilDate:] + 78 9 ??? 0x00000001011005fc 0 + 4312794620 Thread 1: Dispatch queue: com.apple.libdispatch-manager 0 libSystem.B.dylib 0x00007fff8650cbba kevent + 10 1 libSystem.B.dylib 0x00007fff8650ea85 _dispatch_mgr_invoke + 154 2 libSystem.B.dylib 0x00007fff8650e75c _dispatch_queue_invoke + 185 3 libSystem.B.dylib 0x00007fff8650e286 _dispatch_worker_thread2 + 244 4 libSystem.B.dylib 0x00007fff8650dbb8 _pthread_wqthread + 353 5 libSystem.B.dylib 0x00007fff8650da55 start_wqthread + 13 Thread 2: 0 libSystem.B.dylib 0x00007fff8650d9da __workq_kernreturn + 10 1 libSystem.B.dylib 0x00007fff8650ddec _pthread_wqthread + 917 2 libSystem.B.dylib 0x00007fff8650da55 start_wqthread + 13 Thread 3: 0 libSystem.B.dylib 0x00007fff8650d9da __workq_kernreturn + 10 1 libSystem.B.dylib 0x00007fff8650ddec _pthread_wqthread + 917 2 libSystem.B.dylib 0x00007fff8650da55 start_wqthread + 13 Thread 4: 0 libSystem.B.dylib 0x00007fff864f3e3a mach_msg_trap + 10 1 libSystem.B.dylib 0x00007fff864f44ad mach_msg + 59 2 com.apple.CoreFoundation 0x00007fff805ce7a2 __CFRunLoopRun + 1698 3 com.apple.CoreFoundation 0x00007fff805cdc2f CFRunLoopRunSpecific + 575 4 com.apple.Foundation 0x00007fff84cd94cf +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 297 5 com.apple.Foundation 0x00007fff84c59e99 __NSThread__main__ + 1429 6 libSystem.B.dylib 0x00007fff8652cf8e _pthread_start + 331 7 libSystem.B.dylib 0x00007fff8652ce41 thread_start + 13 Thread 5: 0 libSystem.B.dylib 0x00007fff8650d9da __workq_kernreturn + 10 1 libSystem.B.dylib 0x00007fff8650ddec _pthread_wqthread + 917 2 libSystem.B.dylib 0x00007fff8650da55 start_wqthread + 13 Thread 6: 0 libSystem.B.dylib 0x00007fff865379e2 select$DARWIN_EXTSN + 10 1 com.apple.CoreFoundation 0x00007fff805f0242 __CFSocketManager + 818 2 libSystem.B.dylib 0x00007fff8652cf8e _pthread_start + 331 3 libSystem.B.dylib 0x00007fff8652ce41 thread_start + 13 }}} works fine with GC_DISABLE=1 --- TODO: Rewrite the script in pure objc, compile with -fobjc-gc and see if it's a MacRuby bug or a Cocoa bug. -- Ticket URL: <http://www.macruby.org/trac/ticket/540> MacRuby <http://macruby.org/>