148026 2015-08-14 08:49:44 -0700 Frequent assertions on animations/restart-after-scroll.html 2015-08-14 10:32:19 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified NEW InRadar P2 Normal --- 1 ap webkit-unassigned rniwa simon.fraser oldest_to_newest 1117635 0 ap 2015-08-14 08:49:44 -0700 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 1117658 1 ap 2015-08-14 10:10:16 -0700 Got 9 crashes when running the test like this, so the assertion is readily reproducible: run-webkit-tests LayoutTests/animations/restart-after-scroll.html --repeat 100 -f Skipped the test in r188476 1117663 2 simon.fraser 2015-08-14 10:32:19 -0700 This was an iOS platform test that I moved.