Bug 140286 – AX: Crash at -[WebAccessibilityObjectWrapperBase accessibilityTitle] + 31

• Status: RESOLVED
• Resolution: FIXED
• Component: Accessibility

[chris fleizach]

rashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000

VM Regions Near 0:
--> 
    __TEXT                 00000001062d0000-00000001062d1000 [    4K] r-x/rwx SM=COW  /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

Application Specific Information:
Bundle controller class:
BrowserBundleController
 
Process Model:
Multiple Web Processes
 

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore             	0x00007fff99103aef -[WebAccessibilityObjectWrapperBase accessibilityTitle] + 31
1   com.apple.AppKit              	0x00007fff90a901d2 -[NSAccessibilityAttributeAccessorInfo _getAttributeValueForObject:] + 348
2   com.apple.AppKit              	0x00007fff90a90452 -[NSAccessibilityAttributeAccessorInfo getAttributeValue:forObject:] + 58
3   com.apple.AppKit              	0x00007fff90a8bb44 _NSAccessibilityEntryPointValueForAttribute + 1034
4   com.apple.AppKit              	0x00007fff908ba3ac -[NSObject(NSAccessibilityInternal) _accessibilityValueForAttribute:clientError:] + 266
5   com.apple.AppKit              	0x00007fff908bfd39 CopyAppKitUIElementAttributeValueNoCatch + 50
6   com.apple.AppKit              	0x00007fff908be9bf CopyMultipleAttributeValues + 333
7   com.apple.HIServices          	0x00007fff8c559ce5 _AXXMIGCopyMultipleAttributeValues + 295
8   com.apple.HIServices          	0x00007fff8c5656a3 _XCopyMultipleAttributeValues + 594
9   com.apple.HIServices          	0x00007fff8c5411bb mshMIGPerform + 199
10  com.apple.CoreFoundation      	0x00007fff952538d9 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
11  com.apple.CoreFoundation      	0x00007fff9525384b __CFRunLoopDoSource1 + 475
12  com.apple.CoreFoundation      	0x00007fff952453c7 __CFRunLoopRun + 2375
13  com.apple.CoreFoundation      	0x00007fff95244838 CFRunLoopRunSpecific + 296
14  com.apple.HIToolbox           	0x00007fff99a9c43f RunCurrentEventLoopInMode + 235
15  com.apple.HIToolbox           	0x00007fff99a9c1ba ReceiveNextEventCommon + 431
16  com.apple.HIToolbox           	0x00007fff99a9bffb _BlockUntilNextEventMatchingListInModeWithFilter + 71
17  com.apple.AppKit              	0x00007fff905956d1 _DPSNextEvent + 964
18  com.apple.AppKit              	0x00007fff90594e80 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 194
19  com.apple.AppKit              	0x00007fff90588e23 -[NSApplication run] + 594
20  com.apple.AppKit              	0x00007fff905742d4 NSApplicationMain + 1832
21  libxpc.dylib                  	0x00007fff97cdeef2 _xpc_objc_main + 793
22  libxpc.dylib                  	0x00007fff97ce0a9d xpc_main + 490


<rdar://problem/19362835>

[chris fleizach]

Created attachment 244331 [details]
patch

[Mario Sanchez Prada]

Comment on attachment 244331 [details]
patch

I don't think this error in the EFL port is related at all :), so r+: c++: internal compiler error: Killed (program cc1plus)

[WebKit Commit Bot]

Comment on attachment 244331 [details]
patch

Clearing flags on attachment: 244331

Committed r178171: <http://trac.webkit.org/changeset/178171>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.