167652 2017-01-31 10:57:24 -0800 imported/w3c/web-platform-tests/shadow-dom/slotchange.html is a flaky failure 2018-10-01 20:46:04 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 177597 148695 1 ryanhaddad rniwa cdumez dbates esprehn+autocc ews-watchlist ggaren jlewis3 kangil.han keith_miller lforschler msaboff rniwa saam simon.fraser webkit-bug-importer youennf oldest_to_newest 1271783 0 ryanhaddad 2017-01-31 10:57:24 -0800 LayoutTest imported/w3c/web-platform-tests/shadow-dom/slotchange.html is a flaky failure https://build.webkit.org/results/Apple%20Sierra%20Debug%20WK2%20(Tests)/r211432%20(1844)/results.html https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fshadow-dom%2Fslotchange.html --- /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/shadow-dom/slotchange-expected.txt +++ /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/shadow-dom/slotchange-actual.txt @@ -1,9 +1,9 @@ Harness Error (TIMEOUT), message = null -PASS slotchange event: Append a child to a host. -PASS slotchange event: Remove a child from a host. -PASS slotchange event: Remove a child before adding an event listener. +TIMEOUT slotchange event: Append a child to a host. Test timed out +TIMEOUT slotchange event: Remove a child from a host. Test timed out +TIMEOUT slotchange event: Remove a child before adding an event listener. Test timed out PASS slotchange event: Change slot= attribute to make it un-assigned. TIMEOUT slotchange event: Change slot's name= attribute so that none is assigned. Test timed out PASS slotchange event: Change slot= attribute to make it assigned. 1272622 1 ryanhaddad 2017-02-02 13:38:27 -0800 Marked test as flaky in http://trac.webkit.org/projects/webkit/changeset/211593 1354377 2 jlewis3 2017-09-28 16:55:55 -0700 This has since started to be a flaky timeout on Sierra as well: https://build.webkit.org/results/Apple%20Sierra%20Debug%20WK2%20(Tests)/r222625%20(3254)/results.html https://build.webkit.org/builders/Apple%20Sierra%20Debug%20WK2%20(Tests)/builds/3254 1447164 3 webkit-bug-importer 2018-08-01 21:18:40 -0700 <rdar://problem/42841417> 1462245 4 350479 rniwa 2018-09-21 19:55:38 -0700 Created attachment 350479 Reduction The issue here is that the JS wrapper of a HTMLSlotElement can be prematurely collected. We need to use the GC retention mechanism we introduced in https://bugs.webkit.org/show_bug.cgi?id=184307 to keep these slot elements alive. 1462260 5 350486 rniwa 2018-09-21 20:58:42 -0700 Created attachment 350486 Fixes the bug 1462261 6 350486 rniwa 2018-09-21 20:59:31 -0700 Comment on attachment 350486 Fixes the bug View in context: https://bugs.webkit.org/attachment.cgi?id=350486&action=review > LayoutTests/fast/shadow-dom/signal-slot-list-retains-js-wrappers.html:27 > + const x = new Array(100); This path is used for in-browser testing. This test also catches the same bug in Chrome sometimes LOL 1462264 7 ews-watchlist 2018-09-21 21:02:35 -0700 Attachment 350486 did not pass style-queue: ERROR: Source/WebCore/dom/MutationObserver.cpp:193: More than one command on the same line [whitespace/newline] [4] Total errors found: 1 in 5 files If any of these errors are false positives, please file a bug against check-webkit-style. 1462919 8 350486 saam 2018-09-24 15:18:47 -0700 Comment on attachment 350486 Fixes the bug r=me seems reasonable 1462983 9 350486 rniwa 2018-09-24 16:11:38 -0700 Comment on attachment 350486 Fixes the bug Clearing flags on attachment: 350486 Committed r236440: <https://trac.webkit.org/changeset/236440> 1462984 10 rniwa 2018-09-24 16:11:40 -0700 All reviewed patches have been landed. Closing bug. 1465382 11 rniwa 2018-10-01 20:46:04 -0700 Removed the failing test expectation in https://trac.webkit.org/r236710 now that I observe the test isn't failing on the flakiness dashboard. 350479 2018-09-21 19:55:38 -0700 2018-09-21 19:55:38 -0700 Reduction bug167652.html text/html 1195 rniwa PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8Ym9keT4KPHByZSBpZD0ibG9nIj48L3ByZT4KPHNjcmlw dD4KCmZ1bmN0aW9uIHRyaWdnZXJTbG90Q2hhbmdlKGhvc3QsIHNoYWRvd1Jvb3QsIHNsb3RjaGFu Z2VMaXN0ZW5lcikgewogICAgc2hhZG93Um9vdC5pbm5lckhUTUwgPSAnPGRpdj48c2xvdD48L3Ns b3Q+PC9kaXY+JzsKICAgIHNoYWRvd1Jvb3QucXVlcnlTZWxlY3Rvcignc2xvdCcpLmFkZEV2ZW50 TGlzdGVuZXIoJ3Nsb3RjaGFuZ2UnLCBzbG90Y2hhbmdlTGlzdGVuZXIpOwogICAgaG9zdC5pbm5l ckhUTUwgPSAnaGVsbG8nOwogICAgc2hhZG93Um9vdC5pbm5lckhUTUwgPSAnJzsKICAgIGhvc3Qu aW5uZXJIVE1MID0gJyc7Cn0KCmZ1bmN0aW9uIHJ1blRlc3QoKSB7CiAgICBsZXQgc2xvdGNoYW5n ZUNvdW50ID0gMDsKICAgIGNvbnN0IGl0ZXJhdGlvbiA9IDEwMDA7CiAgICBjb25zdCBob3N0ID0g ZG9jdW1lbnQuY3JlYXRlRWxlbWVudCgnZGl2Jyk7CiAgICBjb25zdCBzaGFkb3dSb290ID0gaG9z 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