RESOLVED FIXED252321
AX: In rare scenarios, WebKit fails to expose the text associated with various types of elements / nodes (text, headings) 
https://bugs.webkit.org/show_bug.cgi?id=252321
Summary AX: In rare scenarios, WebKit fails to expose the text associated with variou...
Tyler Wilcock
Reported 2023-02-15 09:49:25 PST
This results in accessibility clients not getting the information they need to make the correct announcement.
Attachments
Patch (7.50 KB, patch)
2023-02-15 20:33 PST, Tyler Wilcock 		no flags
DetailsFormatted DiffDiff
Patch (9.26 KB, patch)
2023-02-16 21:31 PST, Tyler Wilcock 		no flags
DetailsFormatted DiffDiff
Patch (10.47 KB, patch)
2023-02-17 20:06 PST, Tyler Wilcock 		no flags
DetailsFormatted DiffDiff
Patch (10.95 KB, patch)
2023-02-18 11:16 PST, Tyler Wilcock 		no flags
DetailsFormatted DiffDiff
Show Obsolete (3) View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2023-02-15 09:49:36 PST
<rdar://problem/105501379>
Tyler Wilcock
Comment 2 2023-02-15 20:23:21 PST
rdar://102025959
Tyler Wilcock
Comment 3 2023-02-15 20:33:47 PST
Created attachment 465018 [details] Patch
chris fleizach
Comment 4 2023-02-16 10:24:46 PST
Comment on attachment 465018 [details] Patch Talked with Tyler and given that the new test exercises this code path without causing problems is a good sign that this is correct behavior
Tyler Wilcock
Comment 5 2023-02-16 10:26:16 PST
For more context, these checks were originally added in: https://github.com/WebKit/WebKit/commit/e55881c553216d5c417ed9ac9dbb48c079e689ec (search for "recalc") That commit added a test called accessibility/heading-crash-after-hidden.html which we still pass in release and debug with this change.
Tyler Wilcock
Comment 6 2023-02-16 21:31:17 PST
Created attachment 465043 [details] Patch
Andres Gonzalez
Comment 7 2023-02-17 14:04:44 PST
(In reply to Tyler Wilcock from comment #6) > Created attachment 465043 [details] > Patch diff --git a/LayoutTests/accessibility/empty-text-under-element-cached.html b/LayoutTests/accessibility/empty-text-under-element-cached.html new file mode 100644 index 000000000000..d74525ca8d60 --- /dev/null +++ b/LayoutTests/accessibility/empty-text-under-element-cached.html + finishJSTest(); Do you need this? I didn't see jsTestIsAsync = true; This covers the test case where the iso tree is built for the first time. Should we cover the case where a change happens after the iso tree is built and needs an update? Maybe adding a <l> and a <LI> with some text which was the case in QA's report.
Tyler Wilcock
Comment 8 2023-02-17 20:06:10 PST
Created attachment 465063 [details] Patch
Tyler Wilcock
Comment 9 2023-02-18 11:16:16 PST
Created attachment 465066 [details] Patch
Tyler Wilcock
Comment 10 2023-02-18 11:18:40 PST
(In reply to Andres Gonzalez from comment #7) > This covers the test case where the iso tree is built for the first time. > Should we cover the case where a change happens after the iso tree is built > and needs an update? Maybe adding a <l> and a <LI> with some text which was > the case in QA's report. OK, added this additional testcase in the latest patch.
EWS
Comment 11 2023-02-18 16:44:36 PST
Committed 260521@main (87adaeb6e078): <https://commits.webkit.org/260521@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 465066 [details].
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