227719 2021-07-06 13:50:44 -0700 REGRESSION (r279542): [ Mac Debug ] imported/w3c/web-platform-tests/media-source tests are crashing 2021-07-06 14:37:15 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build Mac (Intel) Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 ayumi_kojima webkit-unassigned jean-yves.avenard tsavell webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1775070 0 ayumi_kojima 2021-07-06 13:50:44 -0700 imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-implicit.html imported/w3c/web-platform-tests/media-source/mediasource-changetype-play.html imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-without-codecs-parameter.html imported/w3c/web-platform-tests/media-source/mediasource-changetype-play-negative.html History: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-implicit.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-negative.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play-without-codecs-parameter.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-changetype-play.html It looks like the tests started crashing since the change made in https://trac.webkit.org/changeset/279542/webkit https://build.webkit.org/results/Apple-BigSur-Debug-AppleSilicon-WK2-Tests/r279586%20(2011)/results.html 1775081 1 ayumi_kojima 2021-07-06 14:14:38 -0700 ++ See below for the crash log ++ No crash log found for GPUProcess:30810. stdout: stderr: (cpu_info.cc:53): Available number of cores: 8 ASSERTION FAILED: m_mediaSamples.isEmpty() /Volumes/Data/worker/bigsur-debug/build/Source/WebCore/platform/graphics/avfoundation/objc/SourceBufferPrivateAVFObjC.mm(731) : auto WebCore::SourceBufferPrivateAVFObjC::resetParserState()::(anonymous class)::operator()() const LEAK: 1 WebPageProxy ++ ++ ++ 1775082 2 webkit-bug-importer 2021-07-06 14:15:28 -0700 <rdar://problem/80230748> 1775094 3 tsavell 2021-07-06 14:37:15 -0700 reverted the change that caused this in https://trac.webkit.org/changeset/279622/webkit