[Webkit-unassigned] [Bug 148026] New: Frequent assertions on animations/restart-after-scroll.html

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Aug 14 08:49:44 PDT 2015


https://bugs.webkit.org/show_bug.cgi?id=148026

            Bug ID: 148026
           Summary: Frequent assertions on
                    animations/restart-after-scroll.html
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ap at webkit.org
                CC: rniwa at webkit.org, simon.fraser at apple.com

animations/restart-after-scroll.html very frequently asserts in debug builds, both WK1 and WK2:

    if (m_absCaretBoundsDirty && m_selection.isCaret()) // We should be able to always assert this condition.
        ASSERT(m_absCaretBounds == m_selection.visibleStart().absoluteCaretBounds());

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore          0x000000011088c2f7 WTFCrash + 39
1   com.apple.WebCore                 0x0000000112a029ce WebCore::FrameSelection::recomputeCaretRect() + 878 (FrameSelection.cpp:1484)
2   com.apple.WebCore                 0x0000000112a02e0b WebCore::FrameSelection::invalidateCaretRect() + 91 (FrameSelection.cpp:1518)
3   com.apple.WebCore                 0x00000001129f9b4b WebCore::FrameSelection::caretBlinkTimerFired() + 235 (FrameSelection.cpp:1987)
4   com.apple.WebCore                 0x0000000112a079c8 void std::__1::__invoke_void_return_wrapper<void>::__call<std::__1::__bind<void (WebCore::FrameSelection::*&)(), WebCore::FrameSelection*>&>(std::__1::__bind<void (WebCore::FrameSelection::*&)(), WebCore::FrameSelection*>&&&) + 248 (__functional_base:441)
5   com.apple.WebCore                 0x0000000112a0789c std::__1::__function::__func<std::__1::__bind<void (WebCore::FrameSelection::*&)(), WebCore::FrameSelection*>, std::__1::allocator<std::__1::__bind<void (WebCore::FrameSelection::*&)(), WebCore::FrameSelection*> >, void ()>::operator()() + 44 (functional:1407)
6   com.apple.WebCore                 0x00000001120c463a std::__1::function<void ()>::operator()() const + 26 (functional:1793)
7   com.apple.WebCore                 0x00000001120c455c WebCore::Timer::fired() + 28 (Timer.h:134)
8   com.apple.WebCore                 0x000000011410713a WebCore::ThreadTimers::sharedTimerFiredInternal() + 394 (ThreadTimers.cpp:135)
9   com.apple.WebCore                 0x0000000114106df9 WebCore::ThreadTimers::sharedTimerFired() + 25 (ThreadTimers.cpp:108)
10  com.apple.WebCore                 0x0000000113db5802 WebCore::timerFired(__CFRunLoopTimer*, void*) + 34 (SharedTimerCF.cpp:82)

rdar://problem/21843062

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