Bug #640

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Summary CRASH: NSAppleScript freaks out under Garbage Collection
Product Synergy
When Created 10 January 2008, updated 07 July 2008
Status Open
Reporter sjmills
Description

Created an attachment (id=149) crash log

I wanted to try the Track Change Items feature, so I looked at the sample scripts, then wrote my own. I saved it as a plain script file (data fork) in ~/Library/Application Support/Synergy/Track Change Items. I stopped and started Synergy from the Synergy Preferences app. It soon quit. So I thought perhaps Synergy only expects scripts to be saved as bundles, so I resaved my script and deleted the .scpt version. Started Synergy again and it quit again.

So, to take the entire Track Change Items folder out of the equation, I renamed it with a 'z' at the beginning of the name. Same thing - still quits. I checked for another folder in /Library/... and there is an empty Track Change Items there as well, as well as a folder I created named "Track Change Items (disabled)".

I'm an AppleScript developer, but the crash log doesn't tell me anything useful. I've attached it for you.

Comments

Wincent Colaiuta
2,533 posts
10 January 2008

Thanks for the report, Steve. I think you're correct in concluding that your track change experiments have nothing to do with the crashes.

I've seen these crashes myself and they're the one remaining known stability issue. Basically, it seems that NSAppleScript has some serious issues under Garbage Collection. I've analysed the calling code and there doesn't seem to be anything obvious that can be done about it. The calling code is basically just things like:

static NSString *source =

   @"tell application \"iTunes\"\n"
   @"  try\n"
   @"    return the name of every playlist\n"
   @"  on error\n"
   @"    return \"ERROR\"\n"
   @"  end try\n"
   @"end tell";

NSAppleScript *script = [[NSAppleScript alloc] initWithSource:source]; NSAppleEventDescriptor *result = [script executeAndReturnError:NULL];

As you can see, nothing much there that could explain the crashes... Incidentally, the NULL there is just an alternative to see if it made any difference; prior to that I was passing a parameter in there.

In the worst case scenario I'll have to throw out all use of NSAppleScript if a workaround can't be found... which would be quite painful as it is used in dozens of places all around the code base and will be quite hard to replace.

In my own experience I sometimes have to try launching various times, and every time is crashes in NSAppleScript. But once it's up it generally stays up indefinitely. If the stability starts to wear on you, remember that you can still go back to 3.2, as that works fine on Leopard:

http://wincent.com/a/products/synergy-classic/download/tiger/
Brad
1 post
21 April 2008

I'm experiencing constant crashes as well with Synergy 3.5a6. Here's an example crash log:

Process:         Synergy [6645]
Path:            /Applications/Synergy Preferences.app/Contents/Resources/Synergy.prefPane/Contents/Resources/Synergy.app/Contents/MacOS/Synergy
Identifier:      org.wincent.Synergy
Version:         version 3.5a6 (69d0d56)
Code Type:       X86 (Native)
Parent Process:  launchd [81]

Date/Time:       2008-04-21 14:32:07.713 -0700
OS Version:      Mac OS X 10.5.2 (9C7010)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread:  0

Application Specific Information:
objc[6645]: garbage collection is ON

Thread 0 Crashed:
0   com.apple.applescript         	0x0056dd85 TUASFrame::UnlinkTo(TUASFrameType, TUASUnlinkExtent) + 53
1   com.apple.applescript         	0x005565dc UASExecute1() + 3108
2   com.apple.applescript         	0x00556884 UASExecute(unsigned char) + 178
3   com.apple.applescript         	0x005280e4 ASExecute(unsigned long, unsigned long, long, unsigned long*) + 302
4   ...ple.CoreServices.CarbonCore	0x96862905 CallComponentFunctionCommon + 537
5   ...ple.CoreServices.CarbonCore	0x968a7cb8 CallComponentFunction + 122
6   com.apple.applescript         	0x00523ae2 AppleScriptComponent + 1744
7   com.apple.applescript         	0x0053f927 AGenericManager::HandleOSACall(ComponentParameters*) + 63
8   ...ple.CoreServices.CarbonCore	0x968625cd CallComponentDispatch + 29
9   com.apple.openscripting       	0x91630390 OSAExecute + 61
10  com.apple.Foundation          	0x93658f7b -[NSAppleScript(NSPrivate) _executeWithMode:andReturnError:] + 107
11  com.apple.Foundation          	0x93658e51 -[NSAppleScript executeAndReturnError:] + 49
12  org.wincent.Synergy           	0x00010b73 -[SynergyController timer:] + 9203
13  org.wincent.Synergy           	0x0000ce21 -[SynergyController handleNotification:] + 425
14  com.apple.Foundation          	0x9356fbda _nsnote_callback + 106
15  com.apple.CoreFoundation      	0x9316b71b __CFXNotificationHandleMessage + 587
16  com.apple.CoreFoundation      	0x9316b80e __CFXNotificationReceiveFromServer + 238
17  com.apple.CoreFoundation      	0x93166555 __CFMachPortPerform + 117
18  com.apple.CoreFoundation      	0x9318a921 CFRunLoopRunSpecific + 3921
19  com.apple.CoreFoundation      	0x9318ad18 CFRunLoopRunInMode + 88
20  com.apple.HIToolbox           	0x948ad6a0 RunCurrentEventLoopInMode + 283
21  com.apple.HIToolbox           	0x948ad3f2 ReceiveNextEventCommon + 175
22  com.apple.HIToolbox           	0x948ad32d BlockUntilNextEventMatchingListInMode + 106
23  com.apple.AppKit              	0x91cf27d9 _DPSNextEvent + 657
24  com.apple.AppKit              	0x91cf208e -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
25  com.apple.AppKit              	0x91ceb0c5 -[NSApplication run] + 795
26  com.apple.AppKit              	0x91cb830a NSApplicationMain + 574
27  org.wincent.Synergy           	0x00002dd2 start + 54

Thread 1:
0   libSystem.B.dylib             	0x914a7bce __semwait_signal + 10
1   libSystem.B.dylib             	0x914d28cd pthread_cond_wait$UNIX2003 + 73
2   libauto.dylib                 	0x91477bcf auto_collection_thread(void*) + 175
3   libSystem.B.dylib             	0x914d1c55 _pthread_start + 321
4   libSystem.B.dylib             	0x914d1b12 thread_start + 34

Thread 2:
0   libSystem.B.dylib             	0x914a09e6 mach_msg_trap + 10
1   libSystem.B.dylib             	0x914a81dc mach_msg + 72
2   com.apple.CoreFoundation      	0x9318a0de CFRunLoopRunSpecific + 1806
3   com.apple.CoreFoundation      	0x9318ad18 CFRunLoopRunInMode + 88
4   com.apple.Foundation          	0x935d3ac0 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 320
5   com.apple.Foundation          	0x935705ad -[NSThread main] + 45
6   com.apple.Foundation          	0x93570154 __NSThread__main__ + 308
7   libSystem.B.dylib             	0x914d1c55 _pthread_start + 321
8   libSystem.B.dylib             	0x914d1b12 thread_start + 34

Thread 3:
0   libSystem.B.dylib             	0x914f0b3a select$DARWIN_EXTSN + 10
1   libSystem.B.dylib             	0x914d1c55 _pthread_start + 321
2   libSystem.B.dylib             	0x914d1b12 thread_start + 34

Thread 4:
0   libSystem.B.dylib             	0x914a09e6 mach_msg_trap + 10
1   libSystem.B.dylib             	0x914a81dc mach_msg + 72
2   com.apple.CoreFoundation      	0x9318a0de CFRunLoopRunSpecific + 1806
3   com.apple.CoreFoundation      	0x9318ad18 CFRunLoopRunInMode + 88
4   com.apple.CFNetwork           	0x947216cc CFURLCacheWorkerThread(void*) + 396
5   libSystem.B.dylib             	0x914d1c55 _pthread_start + 321
6   libSystem.B.dylib             	0x914d1b12 thread_start + 34

Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0x09828000  ebx: 0x0056dd5b  ecx: 0x00000008  edx: 0x002a3044
  edi: 0x00000000  esi: 0x005a4070  ebp: 0xbfffe348  esp: 0xbfffe310
   ss: 0x0000001f  efl: 0x00010206  eip: 0x0056dd85   cs: 0x00000017
   ds: 0x0000001f   es: 0x0000001f   fs: 0x00000000   gs: 0x00000037
  cr2: 0x00000000

Binary Images:
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   0x5f000 -    0x79fff  com.apple.ScriptingBridge 1.0 (1.0) <4ef56775c0b6c2f6a28e181b979b5383> /System/Library/Frameworks/ScriptingBridge.framework/Versions/A/ScriptingBridge
  0x10e000 -   0x1efff7  libxml2.2.dylib ??? (???) <3cd4cccd4ca35dffa4688436aa0cd908> /usr/lib/libxml2.2.dylib
  0x272000 -   0x272ffe  com.apple.applescript.component 2.0 (2.0) /System/Library/Components/AppleScript.component/Contents/MacOS/AppleScript
  0x51c000 -   0x5a3ffb  com.apple.applescript 2.0 (2.0) /System/Library/PrivateFrameworks/AppleScript.framework/Versions/A/AppleScript
  0x6fa000 -   0x7e8fef  com.apple.RawCamera.bundle 2.0.3 (2.0.3) /System/Library/CoreServices/RawCamera.bundle/Contents/MacOS/RawCamera
0x15dd6000 - 0x15e5afff  com.apple.xquery 1.3 (27) /System/Library/PrivateFrameworks/XQuery.framework/XQuery
0x8fe00000 - 0x8fe2da53  dyld 96.2 (???) <7af47d3b00b2268947563c7fa8c59a07> /usr/lib/dyld
0x90028000 - 0x9002dfff  com.apple.CommonPanels 1.2.4 (85) <ea0665f57cd267609466ed8b2b20e893> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CommonPanels.framework/Versions/A/CommonPanels
0x9002e000 - 0x9004eff2  libGL.dylib ??? (???) /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
0x9004f000 - 0x900e2fff  com.apple.ink.framework 101.3 (86) <bf3fa8927b4b8baae92381a976fd2079> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Ink.framework/Versions/A/Ink
0x90134000 - 0x901e6ffb  libcrypto.0.9.7.dylib ??? (???) <330b0e48e67faffc8c22dfc069ca7a47> /usr/lib/libcrypto.0.9.7.dylib
0x91298000 - 0x9131fff7  libsqlite3.0.dylib ??? (???) <6978bbcca4277d6ae9f042beff643f7d> /usr/lib/libsqlite3.0.dylib
0x91320000 - 0x9135eff7  libGLImage.dylib ??? (???) <090de775838db03ddc710f57abbf6218> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLImage.dylib
0x9135f000 - 0x9135fffc  com.apple.audio.units.AudioUnit 1.5 (1.5) /System/Library/Frameworks/AudioUnit.framework/Versions/A/AudioUnit
0x913a1000 - 0x913a3ff5  libRadiance.dylib ??? (???) <20eadb285da83df96c795c2c5fa20590> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libRadiance.dylib
0x913a4000 - 0x913a4ffd  com.apple.vecLib 3.4.2 (vecLib 3.4.2) /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
0x91474000 - 0x9149ffe7  libauto.dylib ??? (???) <42d8422dc23a18071869fdf7b5d8fab5> /usr/lib/libauto.dylib
0x914a0000 - 0x915ffff3  libSystem.B.dylib ??? (???) <4899376234e55593b22fc370935f8cdf> /usr/lib/libSystem.B.dylib
0x9161d000 - 0x91635fff  com.apple.openscripting 1.2.6 (???) <b8e553df643f2aec68fa968b3b459b2b> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/OpenScripting.framework/Versions/A/OpenScripting
0x9167b000 - 0x91683fff  com.apple.DiskArbitration 2.2.1 (2.2.1) <75b0c8d8940a8a27816961dddcac8e0f> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x916b7000 - 0x91711ff7  com.apple.CoreText 2.0.1 (???) <07494945ad1e3f5395599f42748457cc> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreText.framework/Versions/A/CoreText
0x91712000 - 0x91726ff3  com.apple.ImageCapture 4.0 (5.0.0) /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/ImageCapture.framework/Versions/A/ImageCapture
0x91737000 - 0x917e7fff  edu.mit.Kerberos 6.0.12 (6.0.12) <3dd13466876a8fe4549cfc1354233ec3> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos
0x917e8000 - 0x91815feb  libvDSP.dylib ??? (???) <b232c018ddd040ec4e2c2af632dd497f> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
0x91816000 - 0x91873ffb  libstdc++.6.dylib ??? (???) <04b812dcec670daa8b7d2852ab14be60> /usr/lib/libstdc++.6.dylib
0x91874000 - 0x9187dfff  com.apple.speech.recognition.framework 3.7.24 (3.7.24) <d3180f9edbd9a5e6f283d6156aa3c602> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SpeechRecognition.framework/Versions/A/SpeechRecognition
0x9187e000 - 0x91b9efe2  com.apple.QuickTime 7.4.5 (67) <520cbf4ae05622466ad1b89f1ba3a4e1> /System/Library/Frameworks/QuickTime.framework/Versions/A/QuickTime
0x91b9f000 - 0x91b9fffd  com.apple.Accelerate 1.4.2 (Accelerate 1.4.2) /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
0x91c82000 - 0x91c88fff  com.apple.print.framework.Print 218.0.2 (220.1) <8bf7ef71216376d12fcd5ec17e43742c> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Print.framework/Versions/A/Print
0x91c89000 - 0x91cb1fff  libcups.2.dylib ??? (???) <2f0a710a9128882efb2ed92ad139b58c> /usr/lib/libcups.2.dylib
0x91cb2000 - 0x924affef  com.apple.AppKit 6.5.2 (949.26) <bc4593edd8a224409fb6953a354505a0> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
0x924b0000 - 0x924b7fe9  libgcc_s.1.dylib ??? (???) <f53c808e87d1184c0f9df63aef53ce0b> /usr/lib/libgcc_s.1.dylib
0x92598000 - 0x92598ff8  com.apple.ApplicationServices 34 (34) <8f910fa65f01d401ad8d04cc933cf887> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
0x9259a000 - 0x92623fe3  com.apple.DesktopServices 1.4.5 (1.4.5) <8b264cd6abbbd750928c637e1247269d> /System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/DesktopServicesPriv
0x92624000 - 0x92703fff  libobjc.A.dylib ??? (???) <a53206274b6c2d42691f677863f379ae> /usr/lib/libobjc.A.dylib
0x92777000 - 0x92792ffb  libPng.dylib ??? (???) <b6abcac36ec7654ff3e1cfa786b0117b> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libPng.dylib
0x927c4000 - 0x92bd4fef  libBLAS.dylib ??? (???) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
0x92d00000 - 0x92d10ffc  com.apple.LangAnalysis 1.6.4 (1.6.4) <cbeb17ab39f28351fe2ab5b82bf465bc> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
0x92d11000 - 0x92d8dfeb  com.apple.audio.CoreAudio 3.1.0 (3.1) <70bb7c657061631491029a61babe0b26> /System/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
0x92d9b000 - 0x92ee0ff7  com.apple.ImageIO.framework 2.0.1 (2.0.1) <68ba11e689a9ca30f8310935cd1e02d6> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
0x92f84000 - 0x92fc3fef  libTIFF.dylib ??? (???) <6d0f80e9d4d81f3f64c876aca005bd53> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libTIFF.dylib
0x92fd4000 - 0x92fd5ffc  libffi.dylib ??? (???) <a3b573eb950ca583290f7b2b4c486d09> /usr/lib/libffi.dylib
0x92fd6000 - 0x93017fe7  libRIP.A.dylib ??? (???) <9d42e83d860433f9126c4871d1fe0ce8> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib
0x93018000 - 0x93018ffa  com.apple.CoreServices 32 (32) <2fcc8f3bd5bbfc000b476cad8e6a3dd2> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x9307f000 - 0x930c1fef  com.apple.NavigationServices 3.5.1 (161) <cc6bd78eabf1e2e7166914e9f12f5850> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/NavigationServices.framework/Versions/A/NavigationServices
0x93114000 - 0x93117fff  com.apple.help 1.1 (36) <b507b08e484cb89033e9cf23062d77de> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Help.framework/Versions/A/Help
0x93118000 - 0x9324afef  com.apple.CoreFoundation 6.5.1 (476.10) <d5bed2688a5eea11a6dc3a3c5c17030e> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x9324b000 - 0x93316fff  com.apple.ColorSync 4.5.0 (4.5.0) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
0x93317000 - 0x9332dfe7  com.apple.CoreVideo 1.5.0 (1.5.0) <bad2d3a9a92fdecd02e64f0b73a76f27> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo
0x9332e000 - 0x93466ff7  libicucore.A.dylib ??? (???) <afcea652ff2ec36885b2c81c57d06d4c> /usr/lib/libicucore.A.dylib
0x9349e000 - 0x93565ff2  com.apple.vImage 3.0 (3.0) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
0x93566000 - 0x937e0fe7  com.apple.Foundation 6.5.4 (677.15) <6216196287f98a65ddb654d04d773e7b> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x937e1000 - 0x93cb4fde  libGLProgrammability.dylib ??? (???) <a3d68f17f37ff55a3e61aca1e3aee522> /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLProgrammability.dylib
0x94306000 - 0x946c4fea  libLAPACK.dylib ??? (???) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
0x946c5000 - 0x94715ff7  com.apple.HIServices 1.7.0 (???) <f7e78891a6d08265c83dca8e378be1ea> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices
0x94716000 - 0x9478dfe3  com.apple.CFNetwork 221.5 (221.5) <5474cdd7d2a8b2e8059de249c702df9e> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
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0x94829000 - 0x94858fe3  com.apple.AE 402.2 (402.2) <e01596187e91af5d48653920017b8c8e> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.framework/Versions/A/AE
0x94859000 - 0x94877fff  libresolv.9.dylib ??? (???) <0629b6dcd71f4aac6a891cbe26253e85> /usr/lib/libresolv.9.dylib
0x9487d000 - 0x94b85fff  com.apple.HIToolbox 1.5.2 (???) <7449d6f2da33ded6936243a92e307459> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
0x94b86000 - 0x94b8dffe  libbsm.dylib ??? (???) <d25c63378a5029648ffd4b4669be31bf> /usr/lib/libbsm.dylib
0x94b8e000 - 0x94b9efff  com.apple.speech.synthesis.framework 3.6.59 (3.6.59) <4ffef145fad3d4d787e0c33eab26b336> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/SpeechSynthesis.framework/Versions/A/SpeechSynthesis
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0x94bac000 - 0x94f42ff7  com.apple.QuartzCore 1.5.1 (1.5.1) <665c80f6e28555b303020c8007c36b8b> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
0x94f43000 - 0x955dcfff  com.apple.CoreGraphics 1.351.21 (???) <6c93fd21149f389129fe47fa6ef71880> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
0x957c4000 - 0x957c4fff  com.apple.Carbon 136 (136) <98a5e3bc0c4fa44bbb09713bb88707fe> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
0x957c5000 - 0x9581eff7  libGLU.dylib ??? (???) /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib
0x9581f000 - 0x958b2ff3  com.apple.ApplicationServices.ATS 3.2 (???) <cdf31bd0ac7de54a35ee2d27cf86b6be> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/ATS
0x958fc000 - 0x958fefff  com.apple.securityhi 3.0 (30817) <2b2854123fed609d1820d2779e2e0963> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/SecurityHI.framework/Versions/A/SecurityHI
0x95919000 - 0x95950fff  com.apple.SystemConfiguration 1.9.1 (1.9.1) <8a76e429301afe4eba1330bfeaabd9f2> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
0x95a22000 - 0x95a46fff  libxslt.1.dylib ??? (???) <4933ddc7f6618743197aadc85b33b5ab> /usr/lib/libxslt.1.dylib
0x95b4f000 - 0x95b59feb  com.apple.audio.SoundManager 3.9.2 (3.9.2) <0f2ba6e891d3761212cf5a5e6134d683> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CarbonSound.framework/Versions/A/CarbonSound
0x95b85000 - 0x95b89fff  libmathCommon.A.dylib ??? (???) /usr/lib/system/libmathCommon.A.dylib
0x95b8a000 - 0x95bc4fff  com.apple.coreui 1.1 (61) /System/Library/PrivateFrameworks/CoreUI.framework/Versions/A/CoreUI
0x95bc5000 - 0x95c0afef  com.apple.Metadata 10.5.2 (398.7) <73a6424c06effc474e699cde6883de99> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
0x95c0b000 - 0x95c96fff  com.apple.framework.IOKit 1.5.1 (???) <a17f9f5ea7e8016a467e67349f4d3d03> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x95ca9000 - 0x95cc8ffa  libJPEG.dylib ??? (???) <0cfb80109d624beb9ceb3c43b6c5ec10> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libJPEG.dylib
0x95e67000 - 0x95f8bfe3  com.apple.audio.toolbox.AudioToolbox 1.5.1 (1.5.1) /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox
0x95fbc000 - 0x95fc7fe7  libCSync.A.dylib ??? (???) <df82fc093e498a9eb5490761cb292218> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
0x95fc8000 - 0x96054ff7  com.apple.LaunchServices 286.5 (286.5) <33c3ae54abb276b61a99d4c764d883e2> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices
0x960e2000 - 0x9615ffef  libvMisc.dylib ??? (???) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib
0x9619a000 - 0x96219ff5  com.apple.SearchKit 1.2.0 (1.2.0) <277b460da86bc222785159fe77e2e2ed> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
0x96421000 - 0x96506ff3  com.apple.CoreData 100.1 (186) <8e28162ef2288692615b52acc01f8b54> /System/Library/Frameworks/CoreData.framework/Versions/A/CoreData
0x96515000 - 0x9653dff7  com.apple.shortcut 1 (1.0) <057783867138902b52bc0941fedb74d1> /System/Library/PrivateFrameworks/Shortcut.framework/Versions/A/Shortcut
0x96543000 - 0x96551ffd  libz.1.dylib ??? (???) <5ddd8539ae2ebfd8e7cc1c57525385c7> /usr/lib/libz.1.dylib
0x96552000 - 0x96568fff  com.apple.DictionaryServices 1.0.0 (1.0.0) <ad0aa0252e3323d182e17f50defe56fc> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/DictionaryServices.framework/Versions/A/DictionaryServices
0x96569000 - 0x96734ff7  com.apple.security 5.0.2 (33001) <0788969ffe7961153219be10786da436> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x96735000 - 0x96735ffb  com.apple.installserver.framework 1.0 (8) /System/Library/PrivateFrameworks/InstallServer.framework/Versions/A/InstallServer
0x96774000 - 0x9682efe3  com.apple.CoreServices.OSServices 224.4 (224.4) <ff5007ab220908ac54b6c661e447d593> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
0x9682f000 - 0x9682fff8  com.apple.Cocoa 6.5 (???) <e064f94d969ce25cb7de3cfb980c3249> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
0x96830000 - 0x96b09ff3  com.apple.CoreServices.CarbonCore 785.8 (785.8) <827c228e7d717b397cdb4941eba69553> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
0x96b0a000 - 0x96b66ff7  com.apple.htmlrendering 68 (1.1.3) <fe87a9dede38db00e6c8949942c6bd4f> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HTMLRendering.framework/Versions/A/HTMLRendering
0x96b67000 - 0x96b6bfff  libGIF.dylib ??? (???) <d4234e6f5e5f530bdafb969157f1f17b> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libGIF.dylib
0x96b6d000 - 0x96c14feb  com.apple.QD 3.11.52 (???) <c72bd7bd2ce12694c3640a731d1ad878> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD
0x96c1b000 - 0x96c26ff9  com.apple.helpdata 1.0 (14) /System/Library/PrivateFrameworks/HelpData.framework/Versions/A/HelpData
0x96ec2000 - 0x96ec2ffd  com.apple.Accelerate.vecLib 3.4.2 (vecLib 3.4.2) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/vecLib
0xba900000 - 0xba916fff  libJapaneseConverter.dylib ??? (???) <7b0248c392848338f5d6ed093313eeef> /System/Library/CoreServices/Encodings/libJapaneseConverter.dylib
0xc0000000 - 0xc0008fff +com.growl.growlframework 1.1.2 (1.1.2) <e4a1c0affd65f843be253224e017b90e> /Applications/Synergy Preferences.app/Contents/Resources/Synergy.prefPane/Contents/Resources/Synergy.app/Contents/Frameworks/Growl.framework/Versions/A/Growl
0xfffe8000 - 0xfffebfff  libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780  libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib
Wincent Colaiuta
2,533 posts
22 April 2008

Just saw a very interesting post to the cocoa-dev mailing list from Apple's own Mark Piccirelli.

Basically, a developer wrote in asking about random crashes in NSAppleScript and Mark replied:

Is this a garbage-collected app? If so the crash is a known bug.

And then in a follow-up:

But we intend to fix it in a software update. (And I can't say anything more specific than that. A fix isn't a fix until it's shipped.)

So fingers crossed that it comes sooner rather than later (although note that he does say that they intend to fix it; which suggests that while it is a known issue it isn't actually fixed yet). It would be nice to have this in 10.5.3 rather than 10.6!
Wincent Colaiuta
2,533 posts
26 April 2008

If you are interested in this issue and would like to see Apple fix the bug, please file a report with them at:

http://bugreport.apple.com/

In your report you should basically make the following points:

  1. That applications that run under Garbage Collection on Leopard are crashing in NSAppleScript
  2. That you're aware that this is a known issue, that the original Radar number is 5523530, but that you wanted to file a report because the issue is negatively impacting your use of Mac OS X and you have no known workarounds

Apparently, receiving duplicate reports help Apple prioritize their engineering resources and decide which bugs should be fixed first.

I think you need an ADC account (free, get one here) in order to use their bugreporter, and it would also be a good idea to attach a sample crash report. Look in your ~/Library/Logs/CrashReporter/ folder for a report, and make sure that it is one which resembles the sample above; in other words, it should be crashing in the main thread, thread 0:

Thread 0 Crashed:

And if you look down the list of stack frames for thread 0 you should see some NSAppleScript calls that resemble these:

10  com.apple.Foundation          	0x93658f7b -[NSAppleScript(NSPrivate) _executeWithMode:andReturnError:] + 107
11  com.apple.Foundation          	0x93658e51 -[NSAppleScript executeAndReturnError:] + 49
Wincent Colaiuta
2,533 posts
30 May 2008

Installed 10.5.3 last night and am testing to see if Apple has fixed this bug... Not hopeful about it as there was no allusion to NSAppleScript, AppleScript or Apple Events in the release notes, and my own bug in Apple's tracker was marked as Closed/Duplicate a long time ago and they don't let you see the status of the original bug. But still, fingers crossed: will see if they've made a fix.
anonymous

24 June 2008

hi, i'm just wondering if this bug has been fixed by Apple or not.

thanks.
Wincent Colaiuta
2,533 posts
24 June 2008

I haven't seen any crashes since upgrading to 10.5.3, and I haven't heard any reports from others either, so I am hoping that the fix was included. But only time will tell seeing as the release notes are not very detailed and didn't mention any low-level bugfixes.
Wincent Colaiuta
2,533 posts
24 June 2008

Sadly, just received my first report of this crash on 10.5.3, so looks like Apple still hasn't fixed the bug:

Date/Time:       2008-06-24 13:26:02.360 -0400
OS Version:      Mac OS X 10.5.3 (9D34)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000003
Crashed Thread:  0

Application Specific Information:
objc[156]: garbage collection is ON

Thread 0 Crashed:
0   com.apple.applescript         	0x1c996214 TUASFrame::UnlinkTo(TUASFrameType, TUASUnlinkExtent) + 64
1   com.apple.applescript         	0x1c97f714 UASExecute1() + 3240
2   com.apple.applescript         	0x1c97f968 UASExecute(unsigned char) + 148
3   com.apple.applescript         	0x1c94ea2c ASExecute(unsigned long, unsigned long, long, unsigned long*) + 308
4   com.apple.applescript         	0x1c94a02c AppleScriptComponent + 1900
5   com.apple.applescript         	0x1c968240 AGenericManager::HandleOSACall(ComponentParameters*) + 64
6   com.apple.openscripting       	0x928877bc OSAExecute + 48
7   com.apple.Foundation          	0x90faefd8 -[NSAppleScript(NSPrivate) _executeWithMode:andReturnError:] + 92
8   org.wincent.Synergy           	0x0000f3c4 -[SynergyController timer:] + 8108
9   org.wincent.Synergy           	0x000091a0 -[SynergyController playPauseHotKeyPressed] + 32
10  org.wincent.Synergy           	0x0000295c -[HotkeyCapableApplication sendEvent:] + 100
11  com.apple.AppKit              	0x938fb6f4 -[NSApplication run] + 776
12  com.apple.AppKit              	0x938cc0d0 NSApplicationMain + 440
13  org.wincent.Synergy           	0x000026fc start + 64
Brett Cassette
1 post
07 July 2008

So what are we able to do in the meantime? I've been experiencing the same crash with Synergy
Wincent Colaiuta
2,533 posts
07 July 2008

In the meantime, you can use Synergy 3.2.1, which has the exact same feature set but does not expose the Leopard bug because it doesn't use the new Garbage Collection added in Leopard.

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