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  1. Qt
  2. QTBUG-32440

Mac OS: QAccessibleWidget::state() crash

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.1.1
    • 5.1.0
    • GUI: Accessibility (a11y)
    • None
    • OS X 10.7.5, 10.8.4
    • macOS

    Description

      Our product is in beta testing with Qt 5.1, built from the stable branch within the last couple of weeks.
      We have received several crashes in OS X that are related to accessibility. I don't think we got any similar crashes when we were building against 5.0.

      I am attaching three crash reports. Two appear to be with QAccessibleWidget::state() and another in QAccessibleWidget::childCount() which may or may not be related.

      So far we haven't been able to duplicate it ourselves, so I don't have steps to reproduce.

      Here is the stack for one of the crashes:

      Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libQt5Widgets.dylib           	0x0000000102598545 QAccessibleWidget::state() const + 37
1   libqcocoa.dylib               	0x00000001046ad7ec QCocoaAccessible::unignoredChildren(objc_object*, QAccessibleInterface*) + 124
2   libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
3   com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
4   com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
5   com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
6   libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
7   com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
8   com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
9   com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
10  libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
11  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
12  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
13  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
14  libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
15  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
16  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
17  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
18  libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
19  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
20  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
21  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
22  libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
23  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
24  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
25  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
26  libqcocoa.dylib               	0x00000001046ab24a -[QCocoaAccessibleElement accessibilityAttributeValue:] + 426
27  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
28  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
29  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
30  libqcocoa.dylib               	0x00000001046977eb -[QNSView(QNSViewAccessibility) accessibilityAttributeValue:] + 251
31  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
32  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
33  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
34  com.apple.CoreFoundation      	0x00007fff8dd55fb1 -[NSObject performSelector:] + 49
35  com.apple.AppKit              	0x00007fff8444a275 NSAccessibilityAttributeValue + 107
36  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
37  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
38  com.apple.AppKit              	0x00007fff8444a5c6 NSAccessibilityUnignoredChildren + 232
39  com.apple.CoreFoundation      	0x00007fff8dd55fb1 -[NSObject performSelector:] + 49
40  com.apple.AppKit              	0x00007fff8444a275 NSAccessibilityAttributeValue + 107
41  com.apple.AppKit              	0x00007fff8444a0ba ValueOfAttributeWithDefault + 48
42  com.apple.AppKit              	0x00007fff8444a06e NSAccessibilityChildrenOrEmptyArray + 19
43  com.apple.AppKit              	0x00007fff8444bbc7 -[NSObject(NSObjectAccessibilityAttributeAccessAdditions) accessibilityIndexOfChild:] + 17
44  com.apple.AppKit              	0x00007fff8444bbb4 -[NSObject(NSAccessibilityUIElementSpecifier) _accessibilitySpecifierComponentForChildUIElement:registerIfNeeded:] + 18
45  com.apple.AppKit              	0x00007fff8444b7c2 -[NSObject(NSAccessibilityUIElementSpecifier) _accessibilityUIElementSpecifierForChild:registerIfNeeded:] + 148
46  com.apple.AppKit              	0x00007fff8444ae6d -[NSObject(NSAccessibilityUIElementSpecifier) _accessibilityUIElementSpecifierRegisterIfNeeded:] + 143
47  com.apple.AppKit              	0x00007fff8444addc -[NSObject(NSAccessibilityUIElementSpecifier) _accessibilityUIElementSpecifier] + 23
48  com.apple.AppKit              	0x00007fff8461084e NSAccessibilityCreateAXUIElementRef + 919
49  com.apple.AppKit              	0x00007fff84610d83 ConvertOutgoingValue + 1294
50  com.apple.AppKit              	0x00007fff84610f75 ConvertOutgoingValueForAttribute + 445
51  com.apple.AppKit              	0x00007fff84610fc8 CopyAppKitUIElementAttributeValueNoCatch + 72
52  com.apple.AppKit              	0x00007fff8460e9b9 CopyAttributeValue + 316
53  com.apple.HIServices          	0x00007fff84124307 _AXXMIGCopyAttributeValue + 225
54  com.apple.HIServices          	0x00007fff8412d60e _XCopyAttributeValue + 619
55  com.apple.HIServices          	0x00007fff84108f1a mshMIGPerform + 564
56  com.apple.CoreFoundation      	0x00007fff8dcbdabc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 44
57  com.apple.CoreFoundation      	0x00007fff8dcbd7eb __CFRunLoopDoSource1 + 155
58  com.apple.CoreFoundation      	0x00007fff8dcf3f27 __CFRunLoopRun + 1895
59  com.apple.CoreFoundation      	0x00007fff8dcf3486 CFRunLoopRunSpecific + 230
60  com.apple.HIToolbox           	0x00007fff878a62bf RunCurrentEventLoopInMode + 277
61  com.apple.HIToolbox           	0x00007fff878ad56d ReceiveNextEventCommon + 355
62  com.apple.HIToolbox           	0x00007fff878ad3fa BlockUntilNextEventMatchingListInMode + 62
63  com.apple.AppKit              	0x00007fff84376779 _DPSNextEvent + 659
64  com.apple.AppKit              	0x00007fff8437607d -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 135
65  com.apple.AppKit              	0x00007fff843729b9 -[NSApplication run] + 470
66  libqcocoa.dylib               	0x0000000104699cd8 QCocoaEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 2360
67  libQt5Core.dylib              	0x00000001031a5e1d QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 397
68  libQt5Core.dylib              	0x00000001031a8f92 QCoreApplication::exec() + 354
69  com.dzed.DragonframeQt        	0x00000001000675ac main + 156
70  com.dzed.DragonframeQt        	0x000000010000c214 start + 52

      Attachments

        1. crash-8325.dmp.txt
          64 kB
        2. crash-8289.dmp.txt
          65 kB
        3. crash-8279.dmp.txt
          61 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-31956 MacOS: qmlviewer crash when resizing windows when assistive devices is enabled

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          replaces

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-32930 The program has unexpectedly finished.

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
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          Activity

            People

              smd Jan Arve
              dzedsystems Dyami Caliri
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              Dates

                Created:
                Updated:
                Resolved:

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