[Webkit-unassigned] [Bug 216520] New: REGRESSION (r267002): ASSERTION FAILED:[ iOS wk2 Debug ] !HashTranslator::equal(KeyTraits::emptyValue(), key) on compositing/ios/overflow-scroll-update-overlap.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=216520

            Bug ID: 216520
           Summary: REGRESSION (r267002): ASSERTION FAILED:[ iOS wk2 Debug
                    ] !HashTranslator::equal(KeyTraits::emptyValue(), key)
                    on compositing/ios/overflow-scroll-update-overlap.html
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: hector_i_lopez at apple.com

compositing/ios/overflow-scroll-update-overlap.html

Test is a constant crash according to history on iOS wk2 Debug. First occurrence is at r267002.

History:

https://results.webkit.org/?suite=layout-tests&test=compositing%2Fios%2Foverflow-scroll-update-overlap.html

Crash Log:
Thread 0 Crashed:
0   com.apple.JavaScriptCore            0x0000000215bdae2e WTFCrash + 14 (Assertions.cpp:295)
1   com.apple.WebKit                    0x00000002000a930b WTFCrashWithInfo(int, char const*, char const*, int) + 27
2   com.apple.WebKit                    0x00000002003f9f6b void WTF::HashTable<unsigned long long, unsigned long long, WTF::IdentityExtractor, WTF::DefaultHash<unsigned long long>, WTF::HashTraits<unsigned long long>, WTF::HashTraits<unsigned long long> >::checkKey<WTF::IdentityHashTranslator<WTF::HashTraits<unsigned long long>, WTF::DefaultHash<unsigned long long> >, unsigned long long>(unsigned long long const&) + 139 (HashTable.h:647)
3   com.apple.WebKit                    0x00000002003f9df4 unsigned long long* WTF::HashTable<unsigned long long, unsigned long long, WTF::IdentityExtractor, WTF::DefaultHash<unsigned long long>, WTF::HashTraits<unsigned long long>, WTF::HashTraits<unsigned long long> >::inlineLookup<WTF::IdentityHashTranslator<WTF::HashTraits<unsigned long long>, WTF::DefaultHash<unsigned long long> >, unsigned long long>(unsigned long long const&) + 36 (HashTable.h:670)
4   com.apple.WebKit                    0x00000002003f9dbd unsigned long long* WTF::HashTable<unsigned long long, unsigned long long, WTF::IdentityExtractor, WTF::DefaultHash<unsigned long long>, WTF::HashTraits<unsigned long long>, WTF::HashTraits<unsigned long long> >::lookup<WTF::IdentityHashTranslator<WTF::HashTraits<unsigned long long>, WTF::DefaultHash<unsigned long long> >, unsigned long long>(unsigned long long const&) + 29 (HashTable.h:661)
5   com.apple.WebKit                    0x00000002003f9d78 bool WTF::HashTable<unsigned long long, unsigned long long, WTF::IdentityExtractor, WTF::DefaultHash<unsigned long long>, WTF::HashTraits<unsigned long long>, WTF::HashTraits<unsigned long long> >::contains<WTF::IdentityHashTranslator<WTF::HashTraits<unsigned long long>, WTF::DefaultHash<unsigned long long> >, unsigned long long>(unsigned long long const&) const + 56 (HashTable.h:1098)
6   com.apple.WebKit                    0x00000002003f9d2d WTF::HashTable<unsigned long long, unsigned long long, WTF::IdentityExtractor, WTF::DefaultHash<unsigned long long>, WTF::HashTraits<unsigned long long>, WTF::HashTraits<unsigned long long> >::contains(unsigned long long const&) const + 29 (HashTable.h:477)
7   com.apple.WebKit                    0x00000002003f662d WTF::HashSet<unsigned long long, WTF::DefaultHash<unsigned long long>, WTF::HashTraits<unsigned long long> >::contains(unsigned long long const&) const + 29 (HashSet.h:219)
8   com.apple.WebKit                    0x000000020133be26 WebKit::RemoteScrollingCoordinator::isUserScrollInProgress(unsigned long long) const + 38 (RemoteScrollingCoordinator.mm:82)
9   com.apple.WebCore                   0x0000000221778cd1 WebCore::RenderLayer::isUserScrollInProgress() const + 113 (RenderLayer.cpp:1896)
10  com.apple.WebCore                   0x0000000221783d26 WebCore::RenderLayer::updateScrollInfoAfterLayout() + 150 (RenderLayer.cpp:3921)
11  com.apple.WebCore                   0x0000000221610900 WebCore::RenderBlock::updateScrollInfoAfterLayout() + 224 (RenderBlock.cpp:589)

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