235343 2022-01-18 16:44:49 -0800 AX: Remove unnecessary isolated tree update for AXSelectedTextChanged node 2022-01-19 11:43:05 -0800 1 1 1 Unclassified WebKit Accessibility WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 tyler_w tyler_w aboxhall andresg_22 apinheiro cfleizach dmazzoni ews-watchlist jcraig jdiggs samuel_white webkit-bug-importer oldest_to_newest 1831903 0 tyler_w 2022-01-18 16:44:49 -0800 When we get an AXSelectedTextChanged notification, we update the isolated tree with the node that has gained selection. Sometimes this node is not a part of the AX tree, meaning its AXAncestorFlags are not initialized. This results in hitting this ASSERT in AXIsolatedObject::initializeAttributeData: // For all objects besides the root, the ancestry flags should've been set by now. ASSERT(isRoot || object.ancestorFlagsAreInitialized()); I don't think updating the isolated tree with this node is necessary. This behavior was added here to fix accessibility/mac/search-text/search-text.html: https://bugs.webkit.org/show_bug.cgi?id=208434 But the test passes in ITM with and without updating the isolated tree with this node. Also, for text selection related operations, isolated tree objects currently defer to the main thread (e.g. AXIsolatedObject::selectedText, AXIsolatedObject::selectedText), further leading me to believe this update is unnecessary. 1831904 1 webkit-bug-importer 2022-01-18 16:45:02 -0800 <rdar://problem/87742260> 1831909 2 449453 tyler_w 2022-01-18 17:00:43 -0800 Created attachment 449453 Patch 1831911 3 449454 tyler_w 2022-01-18 17:02:23 -0800 Created attachment 449454 Patch 1832112 4 ews-feeder 2022-01-19 11:43:01 -0800 Committed r288220 (246180@main): <https://commits.webkit.org/246180@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 449454. 449453 2022-01-18 17:00:43 -0800 2022-01-18 17:02:21 -0800 Patch bug-235343-20220118190042.patch text/plain 3637 tyler_w U3VidmVyc2lvbiBSZXZpc2lvbjogMjg4MDk0CmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggZjNmOTQ4ZjI3NzBmMTA0 MjQ3OTAyYzdjYWE0NjAwYTczYzk5MDQ4Zi4uYzhlOTllMjkxNjkwMzI2NWY2NzE4NDRmMmE2MDQ1 MDUxMTQ5ZDRhMCAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDMxIEBACisyMDIyLTAxLTE4ICBUeWxl ciBXaWxjb2NrICA8dHlsZXJfd0BhcHBsZS5jb20+CisKKyAgICAgICAgQVg6IFJlbW92ZSB1bm5l Y2Vzc2FyeSBpc29sYXRlZCB0cmVlIHVwZGF0ZSBmb3IgQVhTZWxlY3RlZFRleHRDaGFuZ2VkIG5v ZGUKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTIzNTM0 MworCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAgICAgIFdoZW4g d2UgZ2V0IGFuIEFYU2VsZWN0ZWRUZXh0Q2hhbmdlZCBub3RpZmljYXRpb24sIHdlIHVwZGF0ZSB0 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