This issue is found in IsoHeap extension patch[1]. [1]: https://bugs.webkit.org/show_bug.cgi?id=196837
Related to IsoHeap.
Created attachment 367505 [details] Patch
Created attachment 367506 [details] Patch
Comment on attachment 367506 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=367506&action=review > Source/WebCore/css/DOMMatrixReadOnly.h:152 > + std::aligned_storage<sizeof(TransformationMatrix), 8>::type m_storage; aligned_storage just adds alignment information, not adding appropriate padding. So we need to have a padding manually. https://en.cppreference.com/w/cpp/types/aligned_storage Typical aligned_storage implementation. ``` template<std::size_t Len, std::size_t Align /* default alignment not implemented */> struct aligned_storage { struct type { alignas(Align) unsigned char data[Len]; }; }; ```
Let's extract this storage part as PaddedAlignedStorage.
Created attachment 367512 [details] Patch
Created attachment 367513 [details] Patch
The patch becomes not so much related to bmalloc. Remove bmalloc keyword.
Created attachment 367514 [details] Patch
Comment on attachment 367514 [details] Patch Still considering
Comment on attachment 367514 [details] Patch Attachment 367514 [details] did not pass win-ews (win): Output: https://webkit-queues.webkit.org/results/11885059 New failing tests: js/dom/custom-constructors.html
Created attachment 367532 [details] Archive of layout-test-results from ews202 for win-future The attached test failures were seen while running run-webkit-tests on the win-ews. Bot: ews202 Port: win-future Platform: CYGWIN_NT-6.1-2.10.0-0.325-5-3-x86_64-64bit