253723 2023-03-10 10:55:26 -0800 REGRESSION(261329@main): inspector/css/modify-css-property.html(layout-tests) is a constant crash 2023-03-17 17:50:05 -0700 1 1 1 Unclassified WebKit CSS Other Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 Morningstar webkit-unassigned pangle webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1940442 0 Morningstar 2023-03-10 10:55:26 -0800 inspector/css/modify-css-property.html is a constant crash on macOS queues after261329@main http://commits.webkit.org/261329@main HISTORY: https://results.webkit.org/?suite=layout-tests&test=inspector%2Fcss%2Fmodify-css-property.html This test is crashing but it seems unable to generate a crash-log. Instead it says: No crash log found for DumpRenderTree:50556. I'll do my best to get one and add it here as a comment. 1940444 1 webkit-bug-importer 2023-03-10 10:57:31 -0800 <rdar://problem/106561354> 1940447 2 Morningstar 2023-03-10 11:00:23 -0800 Continuing to investigate and attempting to grab crash log but assigning to Patrick whom made the commit. 1940468 3 ryanhaddad 2023-03-10 11:49:56 -0800 ASSERTION FAILED: is<Target>(source) /Volumes/Data/worker/Apple-Ventura-Debug-Build/build/WebKitBuild/Debug/usr/local/include/wtf/TypeCasts.h(79) : match_constness_t<Source, Target> &WTF::downcast(Source &) [Target = WebCore::StyleRule, Source = WebCore::StyleRuleBase] 1 0x32c282c39 WTFCrash 2 0x32c282c59 WTFCrashWithSecurityImplication 3 0x2eec2e971 std::__1::conditional<std::is_const_v<WebCore::StyleRuleBase>, std::__1::add_const<WebCore::StyleRule>::type, std::__1::remove_const<WebCore::StyleRule>::type>::type& WTF::downcast<WebCore::StyleRule, WebCore::StyleRuleBase>(WebCore::StyleRuleBase&) 4 0x2eec2e8c1 WebCore::CSSStyleRule::reattach(WebCore::StyleRuleBase&) 5 0x2eec30257 WebCore::CSSStyleSheet::reattachChildRuleCSSOMWrappers() 6 0x2eec30070 WebCore::CSSStyleSheet::willMutateRules() 7 0x2eec333ab WebCore::CSSStyleSheet::RuleMutationScope::RuleMutationScope(WebCore::CSSStyleSheet*, WebCore::CSSStyleSheet::RuleMutationType, WebCore::StyleRuleKeyframes*) 8 0x2eec319cb WebCore::CSSStyleSheet::RuleMutationScope::RuleMutationScope(WebCore::CSSStyleSheet*, WebCore::CSSStyleSheet::RuleMutationType, WebCore::StyleRuleKeyframes*) 9 0x2efb23a73 WebCore::InspectorStyleSheet::reparseStyleSheet(WTF::String const&) 10 0x2efb28e5e WebCore::InspectorStyleSheet::setRuleStyleText(WebCore::InspectorCSSId const&, WTF::String const&, WTF::String*, WebCore::InspectorStyleSheet::IsUndo)::$_22::operator()(WTF::String&) const 11 0x2efb28d6e WebCore::InspectorStyleSheet::setRuleStyleText(WebCore::InspectorCSSId const&, WTF::String const&, WTF::String*, WebCore::InspectorStyleSheet::IsUndo) 12 0x2efbce082 WebCore::InspectorCSSAgent::SetStyleTextAction::redo() 1940494 4 pangle 2023-03-10 13:14:01 -0800 I wonder if a CSS change and I crossed paths here... The pre-commit bots were green at the time of landing. 1942167 5 m_dubet 2023-03-17 13:14:33 -0700 Pull request: https://github.com/WebKit/WebKit/pull/11663 1942215 6 ews-feeder 2023-03-17 17:50:03 -0700 Committed 261815@main (1274b2e85784): <https://commits.webkit.org/261815@main> Reviewed commits have been landed. Closing PR #11663 and removing active labels.