Bug 20386 – REGRESSION (r35445): In Gmail, a crash occurs at KJS::Machine::privateExecute() when applying list styling to text after a quote had been removed

• Status: RESOLVED
• Resolution: FIXED
• Component: JavaScriptCore

[Geoffrey Garen]

* SUMMARY
In Gmail, a crash occurs at KJS::Machine::privateExecute() when applying list styling to text after a quote had been removed
This looks like a crash in JS core but sending to Justin to take a look.


* STEPS TO REPRODUCE
1. With TOT , log into your Gmail account.
2. Create a rich text message and type the following:

oranges<return>limes

3.Select both words and click on the Numbered list icon
4. After list has been applied, press the indent more icon so the selected list indents.
5. With this list still selected, click the Quote toolbar icon
6. With the quote applied, click the Unordered list icon once
7. Notice the quote is removed and the list is now unordered. However, the selection around this list is removed.
8. At this point, click the Unordered list icon again
9. A crash occurs now.

Process:         Safari [1869]
Path:            /Volumes/Untitled/Applications/Safari.app/Contents/MacOS/Safari
Identifier:      com.apple.Safari
Version:         3.1.2 (5525.20.1)
Build Info:      WebBrowser-55252001~1
Code Type:       X86 (Native)
Parent Process:  bash [1696]

Date/Time:       2008-08-14 12:12:32.272 -0700
OS Version:      Mac OS X 10.5.4 (9E17)
Report Version:  6

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000004
Crashed Thread:  0

Thread 0 Crashed:
0   com.apple.JavaScriptCore      	0x003c3242 KJS::Machine::privateExecute(KJS::Machine::ExecutionFlag, KJS::ExecState*, KJS::RegisterFile*, KJS::Register*, KJS::ScopeChainNode*, KJS::CodeBlock*, KJS::JSValue**) + 6834
1   com.apple.JavaScriptCore      	0x003cba0b KJS::Machine::execute(KJS::FunctionBodyNode*, KJS::ExecState*, KJS::JSFunction*, KJS::JSObject*, KJS::ArgList const&, KJS::ScopeChainNode*, KJS::JSValue**) + 731
2   com.apple.JavaScriptCore      	0x00352586 KJS::JSFunction::call(KJS::ExecState*, KJS::JSValue*, KJS::ArgList const&) + 102
3   com.apple.JavaScriptCore      	0x0037b64c KJS::functionProtoFuncCall(KJS::ExecState*, KJS::JSObject*, KJS::JSValue*, KJS::ArgList const&) + 252
4   com.apple.JavaScriptCore      	0x003ca9ef KJS::Machine::privateExecute(KJS::Machine::ExecutionFlag, KJS::ExecState*, KJS::RegisterFile*, KJS::Register*, KJS::ScopeChainNode*, KJS::CodeBlock*, KJS::JSValue**) + 37471
5   com.apple.JavaScriptCore      	0x003cba0b KJS::Machine::execute(KJS::FunctionBodyNode*, KJS::ExecState*, KJS::JSFunction*, KJS::JSObject*, KJS::ArgList const&, KJS::ScopeChainNode*, KJS::JSValue**) + 731
6   com.apple.JavaScriptCore      	0x00352586 KJS::JSFunction::call(KJS::ExecState*, KJS::JSValue*, KJS::ArgList const&) + 102
7   com.apple.JavaScriptCore      	0x0037b990 KJS::functionProtoFuncApply(KJS::ExecState*, KJS::JSObject*, KJS::JSValue*, KJS::ArgList const&) + 560
8   com.apple.JavaScriptCore      	0x003ca9ef KJS::Machine::privateExecute(KJS::Machine::ExecutionFlag, KJS::ExecState*, KJS::RegisterFile*, KJS::Register*, KJS::ScopeChainNode*, KJS::CodeBlock*, KJS::JSValue**) + 37471
9   com.apple.JavaScriptCore      	0x003cba0b KJS::Machine::execute(KJS::FunctionBodyNode*, KJS::ExecState*, KJS::JSFunction*, KJS::JSObject*, KJS::ArgList const&, KJS::ScopeChainNode*, KJS::JSValue**) + 731
10  com.apple.JavaScriptCore      	0x00352586 KJS::JSFunction::call(KJS::ExecState*, KJS::JSValue*, KJS::ArgList const&) + 102
11  com.apple.JavaScriptCore      	0x0037b64c KJS::functionProtoFuncCall(KJS::ExecState*, KJS::JSObject*, KJS::JSValue*, KJS::ArgList const&) + 252
12  com.apple.JavaScriptCore      	0x003ca9ef KJS::Machine::privateExecute(KJS::Machine::ExecutionFlag, KJS::ExecState*, KJS::RegisterFile*, KJS::Register*, KJS::ScopeChainNode*, KJS::CodeBlock*, KJS::JSValue**) + 37471
13  com.apple.JavaScriptCore      	0x003cba0b KJS::Machine::execute(KJS::FunctionBodyNode*, KJS::ExecState*, KJS::JSFunction*, KJS::JSObject*, KJS::ArgList const&, KJS::ScopeChainNode*, KJS::JSValue**) + 731
14  com.apple.JavaScriptCore      	0x00352586 KJS::JSFunction::call(KJS::ExecState*, KJS::JSValue*, KJS::ArgList const&) + 102
15  com.apple.WebCore             	0x00df4ddd WebCore::JSAbstractEventListener::handleEvent(WebCore::Event*, bool) + 1261
16  com.apple.WebCore             	0x00d68c26 WebCore::EventTarget::handleLocalEvents(WebCore::EventTargetNode*, WebCore::Event*, bool) + 182
17  com.apple.WebCore             	0x00d68b4f WebCore::EventTargetNode::handleLocalEvents(WebCore::Event*, bool) + 79
18  com.apple.WebCore             	0x00d685e6 WebCore::EventTarget::dispatchGenericEvent(WebCore::EventTargetNode*, WTF::PassRefPtr<WebCore::Event>, int&, bool) + 454
19  com.apple.WebCore             	0x00d6832f WebCore::EventTargetNode::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, int&, bool) + 255
20  com.apple.WebCore             	0x00ef6e1a WebCore::EventTargetNode::dispatchMouseEvent(WebCore::AtomicString const&, int, int, int, int, int, int, bool, bool, bool, bool, bool, WebCore::Node*, WTF::PassRefPtr<WebCore::Event>) + 746
21  com.apple.WebCore             	0x00ef6ae5 WebCore::EventTargetNode::dispatchMouseEvent(WebCore::PlatformMouseEvent const&, WebCore::AtomicString const&, int, WebCore::Node*) + 165
22  com.apple.WebCore             	0x00ef65cb WebCore::EventHandler::dispatchMouseEvent(WebCore::AtomicString const&, WebCore::Node*, bool, int, WebCore::PlatformMouseEvent const&, bool) + 107
23  com.apple.WebCore             	0x00e7661b WebCore::EventHandler::handleMouseReleaseEvent(WebCore::PlatformMouseEvent const&) + 731
24  com.apple.WebCore             	0x00e76249 WebCore::EventHandler::mouseUp(NSEvent*) + 393
25  com.apple.WebKit              	0x001a60bc -[WebHTMLView mouseUp:] + 220
26  com.apple.WebCore             	0x00eae70e WebCore::EventHandler::passSubframeEventToSubframe(WebCore::MouseEventWithHitTestResults&, WebCore::Frame*, WebCore::HitTestResult*) + 558
27  com.apple.WebCore             	0x00ed7ae7 WebCore::EventHandler::passMouseReleaseEventToSubframe(WebCore::MouseEventWithHitTestResults&, WebCore::Frame*) + 39
28  com.apple.WebCore             	0x00e76508 WebCore::EventHandler::handleMouseReleaseEvent(WebCore::PlatformMouseEvent const&) + 456
29  com.apple.WebCore             	0x00e76249 WebCore::EventHandler::mouseUp(NSEvent*) + 393
30  com.apple.WebKit              	0x001a60bc -[WebHTMLView mouseUp:] + 220
31  com.apple.AppKit              	0x903f8929 -[NSWindow sendEvent:] + 5539
32  com.apple.Safari              	0x0002bb53 0x1000 + 174931
33  com.apple.AppKit              	0x903c5431 -[NSApplication sendEvent:] + 2941
34  com.apple.Safari              	0x0002b5d8 0x1000 + 173528
35  com.apple.AppKit              	0x90322e27 -[NSApplication run] + 847
36  com.apple.AppKit              	0x902f0030 NSApplicationMain + 574
37  com.apple.Safari              	0x000ba4d6 0x1000 + 758998

Thread 1:
0   libSystem.B.dylib             	0x9351168e __semwait_signal + 10
1   libSystem.B.dylib             	0x9353c36d pthread_cond_wait$UNIX2003 + 73
2   com.apple.WebCore             	0x00d0945f WebCore::IconDatabase::syncThreadMainLoop() + 239
3   com.apple.WebCore             	0x00cc3045 WebCore::IconDatabase::iconDatabaseSyncThread() + 181
4   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
5   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 2:
0   libSystem.B.dylib             	0x9350a4a6 mach_msg_trap + 10
1   libSystem.B.dylib             	0x93511c9c mach_msg + 72
2   com.apple.CoreFoundation      	0x93d7d0ce CFRunLoopRunSpecific + 1790
3   com.apple.CoreFoundation      	0x93d7dcf8 CFRunLoopRunInMode + 88
4   com.apple.CFNetwork           	0x91a16a32 CFURLCacheWorkerThread(void*) + 396
5   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
6   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 3:
0   libSystem.B.dylib             	0x9350a4a6 mach_msg_trap + 10
1   libSystem.B.dylib             	0x93511c9c mach_msg + 72
2   com.apple.CoreFoundation      	0x93d7d0ce CFRunLoopRunSpecific + 1790
3   com.apple.CoreFoundation      	0x93d7dcf8 CFRunLoopRunInMode + 88
4   com.apple.Foundation          	0x925e1460 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 320
5   com.apple.Foundation          	0x9257df1d -[NSThread main] + 45
6   com.apple.Foundation          	0x9257dac4 __NSThread__main__ + 308
7   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
8   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 4:
0   libSystem.B.dylib             	0x9355a5e2 select$DARWIN_EXTSN + 10
1   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
2   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 5:
0   libSystem.B.dylib             	0x9350a4a6 mach_msg_trap + 10
1   libSystem.B.dylib             	0x93511c9c mach_msg + 72
2   ...romedia.Flash Player.plugin	0x1aa0b959 memcopy_mmx + 709497
3   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
4   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 6:
0   libSystem.B.dylib             	0x9350a4ee semaphore_wait_signal_trap + 10
1   libSystem.B.dylib             	0x9353c866 _pthread_cond_wait + 1267
2   libSystem.B.dylib             	0x93582371 pthread_cond_wait + 48
3   ...romedia.Flash Player.plugin	0x1a8d2928 0x1a540000 + 3746088
4   ...romedia.Flash Player.plugin	0x1a90a230 Flash_EnforceLocalSecurity + 125000
5   ...romedia.Flash Player.plugin	0x1a8d2bd2 0x1a540000 + 3746770
6   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
7   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 7:
0   libSystem.B.dylib             	0x9350a4ee semaphore_wait_signal_trap + 10
1   libSystem.B.dylib             	0x9353c866 _pthread_cond_wait + 1267
2   libSystem.B.dylib             	0x93582371 pthread_cond_wait + 48
3   ...romedia.Flash Player.plugin	0x1a8d2928 0x1a540000 + 3746088
4   ...romedia.Flash Player.plugin	0x1a90a230 Flash_EnforceLocalSecurity + 125000
5   ...romedia.Flash Player.plugin	0x1a8d2bd2 0x1a540000 + 3746770
6   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
7   libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 8:
0   libSystem.B.dylib             	0x9350a506 semaphore_timedwait_signal_trap + 10
1   libSystem.B.dylib             	0x9353c84f _pthread_cond_wait + 1244
2   libSystem.B.dylib             	0x9353e0d3 pthread_cond_timedwait_relative_np + 47
3   com.apple.Foundation          	0x925c3e8c -[NSCondition waitUntilDate:] + 236
4   com.apple.Foundation          	0x925c3ca0 -[NSConditionLock lockWhenCondition:beforeDate:] + 144
5   com.apple.Foundation          	0x925c3c05 -[NSConditionLock lockWhenCondition:] + 69
6   com.apple.AppKit              	0x90390470 -[NSUIHeartBeat _heartBeatThread:] + 753
7   com.apple.Foundation          	0x9257df1d -[NSThread main] + 45
8   com.apple.Foundation          	0x9257dac4 __NSThread__main__ + 308
9   libSystem.B.dylib             	0x9353b6f5 _pthread_start + 321
10  libSystem.B.dylib             	0x9353b5b2 thread_start + 34

Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0x00000001  ebx: 0x003c17a1  ecx: 0x00000000  edx: 0x00000001
  edi: 0x17db7a8c  esi: 0xfffffdf6  ebp: 0xbfffc238  esp: 0xbfffb690
   ss: 0x0000001f  efl: 0x00010246  eip: 0x003c3242   cs: 0x00000017
   ds: 0x0000001f   es: 0x0000001f   fs: 0x00000000   gs: 0x00000037
  cr2: 0x00000004

Binary Images:
    0x1000 -   0x133fef  com.apple.Safari 3.1.2 (5525.20.1) <b8911db3c9f4e89257f40775a27be7c6> /Volumes/Untitled/Applications/Safari.app/Contents/MacOS/Safari
  0x17b000 -   0x247fe7  com.apple.WebKit 5528 (5528.2) <69271d332a60965fd09c2a072fa94c09> /Volumes/Untitled/release/WebKit.framework/Versions/A/WebKit
  0x2dc000 -   0x2ebff8  SyndicationUI ??? (???) <edde0133829971dbd8a0f3473cdb85fc> /System/Library/PrivateFrameworks/SyndicationUI.framework/Versions/A/SyndicationUI
  0x2fb000 -   0x3e3fef  com.apple.JavaScriptCore 5528 (5528.2) <0a74333133dba87ad67f9e86f9d646f2> /Volumes/Untitled/release/JavaScriptCore.framework/Versions/A/JavaScriptCore
  0x7a4000 -   0x7a9ff3  libCGXCoreImage.A.dylib ??? (???) <32265ec157db98a33c5dcf0e6687dec2> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGXCoreImage.A.dylib
  0xcbc000 -  0x148cfff  com.apple.WebCore 5528 (5528.2) <8aabbb8da73643a1ddc667f4bb7759f7> /Volumes/Untitled/release/WebCore.framework/Versions/A/WebCore
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0x172a0000 - 0x172a0ffe  com.apple.JavaPluginCocoa 12.0.0 (12.0.0) <2da800f2bba7c0670773b6305fe7625e> /Library/Internet Plug-Ins/JavaPluginCocoa.bundle/Contents/MacOS/JavaPluginCocoa
0x17c37000 - 0x17c3effd  com.apple.JavaVM 12.0.2 (12.0.2) <2cd4cd0edace299c1d5231657d107b54> /System/Library/Frameworks/JavaVM.framework/Versions/A/JavaVM
0x1a540000 - 0x1ab40ffb +com.macromedia.Flash Player.plugin 9.0.124 (1.0.4f60) <8355dcf076564b6784c517fd0eccb2f2> /Library/Internet Plug-Ins/Flash Player.plugin/Contents/MacOS/Flash Player
0x1ac81000 - 0x1aca0fed  com.apple.audio.CoreAudioKit 1.5 (1.5) <82f2e52c502db7f3b32349a54209a0fe> /System/Library/Frameworks/CoreAudioKit.framework/Versions/A/CoreAudioKit
0x8fe00000 - 0x8fe2da53  dyld 96.2 (???) <14ac3b684fa5a31932fa89c4bba7a29b> /usr/lib/dyld
0x90003000 - 0x9013bff7  libicucore.A.dylib ??? (???) <5031226ea28b371d8dfdbb32acfb48b5> /usr/lib/libicucore.A.dylib
0x9013c000 - 0x902bbfff  com.apple.AddressBook.framework 4.1.1 (695) <24a448ba4f9f784189bd3183e3474d81> /System/Library/Frameworks/AddressBook.framework/Versions/A/AddressBook
0x902e7000 - 0x902e8ffc  libffi.dylib ??? (???) <a3b573eb950ca583290f7b2b4c486d09> /usr/lib/libffi.dylib
0x902e9000 - 0x902e9ffd  com.apple.Accelerate.vecLib 3.4.2 (vecLib 3.4.2) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/vecLib
0x902ea000 - 0x90ae7fef  com.apple.AppKit 6.5.3 (949.33) <84b236f43802f4c15011513d18efa101> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
0x90ae8000 - 0x90af3ff9  com.apple.helpdata 1.0 (14) /System/Library/PrivateFrameworks/HelpData.framework/Versions/A/HelpData
0x90b67000 - 0x90b8ffff  libcups.2.dylib ??? (???) <ece20dff2a2c8ed3ae6ef735ef440c37> /usr/lib/libcups.2.dylib
0x90b90000 - 0x90b9ffff  libsasl2.2.dylib ??? (???) <b9e1ca0b6612e280b6cbea6df0eec5f6> /usr/lib/libsasl2.2.dylib
0x90ba0000 - 0x90d6efff  com.apple.security 5.0.4 (34102) <f01d6cbd6a0f24f6c13952ed448e77d6> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x90d6f000 - 0x90db0fe7  libRIP.A.dylib ??? (???) <c8d988d3880d7268468112c64c626d86> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib
0x90db1000 - 0x90e63ffb  libcrypto.0.9.7.dylib ??? (???) <330b0e48e67faffc8c22dfc069ca7a47> /usr/lib/libcrypto.0.9.7.dylib
0x90e64000 - 0x90e82ff3  com.apple.DirectoryService.Framework 3.5.4 (3.5.4) <fe27e80e1a9e86403fd9ed16dcfe4e11> /System/Library/Frameworks/DirectoryService.framework/Versions/A/DirectoryService
0x90e83000 - 0x90e9bfff  com.apple.openscripting 1.2.6 (???) <b8e553df643f2aec68fa968b3b459b2b> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/OpenScripting.framework/Versions/A/OpenScripting
0x90e9c000 - 0x90ea4fff  com.apple.DiskArbitration 2.2.1 (2.2.1) <75b0c8d8940a8a27816961dddcac8e0f> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x914f6000 - 0x915bdff2  com.apple.vImage 3.0 (3.0) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
0x916c3000 - 0x919caff7  com.apple.HIToolbox 1.5.3 (???) <e36f5c553e5a32f64b7eb458dadadc71> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
0x919cb000 - 0x919daffe  com.apple.DSObjCWrappers.Framework 1.3 (1.3) <09deb9e32d0d09dfb95ae569bdd2b7a4> /System/Library/PrivateFrameworks/DSObjCWrappers.framework/Versions/A/DSObjCWrappers
0x919db000 - 0x91a0afe3  com.apple.AE 402.2 (402.2) <e01596187e91af5d48653920017b8c8e> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.framework/Versions/A/AE
0x91a0b000 - 0x91a8dff3  com.apple.CFNetwork 330.4 (330.4) <ce5b085df34a78b7f198aff9db5b52ec> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
0x91a94000 - 0x91ac1feb  libvDSP.dylib ??? (???) <b232c018ddd040ec4e2c2af632dd497f> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
0x91ac2000 - 0x91b8dfff  com.apple.ColorSync 4.5.0 (4.5.0) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
0x91c01000 - 0x91c01ff8  com.apple.Cocoa 6.5 (???) <e064f94d969ce25cb7de3cfb980c3249> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
0x91ccc000 - 0x91cecff2  libGL.dylib ??? (???) /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib
0x91ced000 - 0x91dd2ff3  com.apple.CoreData 100.1 (186) <8e28162ef2288692615b52acc01f8b54> /System/Library/Frameworks/CoreData.framework/Versions/A/CoreData
0x91dd3000 - 0x91deeff3  libPng.dylib ??? (???) <c0484bec6e2432b406755591924fe664> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libPng.dylib
0x91def000 - 0x91dffffc  com.apple.LangAnalysis 1.6.4 (1.6.4) <8b7831b5f74a950a56cf2d22a2d436f6> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
0x91e01000 - 0x91e4bfe1  com.apple.securityinterface 3.0 (32532) <f521dae416ce7a3bdd594b0d4e2fb517> /System/Library/Frameworks/SecurityInterface.framework/Versions/A/SecurityInterface
0x91e4c000 - 0x9220afea  libLAPACK.dylib ??? (???) /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
0x9220b000 - 0x92212ff7  libCGATS.A.dylib ??? (???) <57f0aa6c1b3caaa19980ce4c8ff5dbf0> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCGATS.A.dylib
0x92213000 - 0x9223bff7  com.apple.shortcut 1 (1.0) <057783867138902b52bc0941fedb74d1> /System/Library/PrivateFrameworks/Shortcut.framework/Versions/A/Shortcut
0x9223c000 - 0x9223ffff  com.apple.help 1.1 (36) <b507b08e484cb89033e9cf23062d77de> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Help.framework/Versions/A/Help
0x92240000 - 0x9224afeb  com.apple.audio.SoundManager 3.9.2 (3.9.2) <0f2ba6e891d3761212cf5a5e6134d683> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/CarbonSound.framework/Versions/A/CarbonSound
0x9224b000 - 0x92256fe7  libCSync.A.dylib ??? (???) <8011fc1963cebdde0c6f101dbee5afd7> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
0x9228c000 - 0x92308feb  com.apple.audio.CoreAudio 3.1.0 (3.1) <fd70d88739fd63baf0b05a18999ea080> /System/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
0x924c5000 - 0x92521ff7  com.apple.htmlrendering 68 (1.1.3) <fe87a9dede38db00e6c8949942c6bd4f> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HTMLRendering.framework/Versions/A/HTMLRendering
0x92573000 - 0x927eefe7  com.apple.Foundation 6.5.5 (677.19) <bfd4ebea1a7739dd6b523f15dca01a37> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x927ef000 - 0x92848ff7  libGLU.dylib ??? (???) /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib
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[Cameron Zwarich (cpst)]

I am assigning this to myself.

[Cameron Zwarich (cpst)]

This works in r35417, but it crashes in r35531. Since this is the same range as bug 20391, it seems like they might be the same bug. It crashes in the same opcode, get_scoped_var, but it hits

            ASSERT(iter != end);

instead of crashing on a later line.

I'll bisect to find the exact point of regression.

[Cameron Zwarich (cpst)]

The revision that causes this is r34445:

http://trac.webkit.org/changeset/35445

It seems that the scope chain is being unwound too far. I'll try to make a test case.

[Oliver Hunt]

Thr problem is that the depth() function does not account for a 0-depth function not having a full scope chain node.  I have  patch that rectifies this.  SImple test case :
function runTest() {
    var test = "FAIL";
    with({test:"PASS"})
       (function () { try { throw ""; } finally { print(test); }})()
}
runTest();

[Oliver Hunt]

Created attachment 22842 [details]
fix

[Oliver Hunt]

Committing to http://svn.webkit.org/repository/webkit/trunk ...
	M	JavaScriptCore/ChangeLog
	M	JavaScriptCore/VM/Machine.cpp
	M	LayoutTests/ChangeLog
	A	LayoutTests/fast/js/exception-try-finally-scope-error-expected.txt
	A	LayoutTests/fast/js/exception-try-finally-scope-error.html
	A	LayoutTests/fast/js/resources/exception-try-finally-scope-error.js
Committed r35812