56140 – REGRESSION: fast/text/large-text-composed-char-dos.html sometimes fails

NEW56140

REGRESSION: fast/text/large-text-composed-char-dos.html sometimes fails

https://bugs.webkit.org/show_bug.cgi?id=56140

Summary REGRESSION: fast/text/large-text-composed-char-dos.html sometimes fails

Adam Roben (:aroben)

Reported 2011-03-10 13:22:50 PST

fast/text/large-text-composed-char-dos.html sometimes fails on Windows. See the URL for one example. This started happening within the last week. Perhaps r80526 is related?

Attachments
composed sequence in adjacent nodes (199 bytes, text/html) 2011-03-14 12:54 PDT, Alexey Proskuryakov	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Alexey Proskuryakov

Comment 1 2011-03-10 15:45:52 PST

Almost certainly related. Not sure what exactly is going on though.

Adam Roben (:aroben)

Comment 2 2011-03-11 05:43:07 PST

It failed on SnowLeopard, too! http://build.webkit.org/results/SnowLeopard%20Intel%20Release%20(Tests)/r80842%20(26633)/fast/text/large-text-composed-char-dos-pretty-diff.html

Adam Roben (:aroben)

Comment 3 2011-03-11 06:51:36 PST

I disabled the test in r80849.

Jessie Berlin

Comment 4 2011-03-11 07:11:46 PST

<rdar://problem/9121050>

David Levin

Comment 5 2011-03-13 14:20:37 PDT

fwiw, looking at our dashboard, things changed with r80526. http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20chromium.org&tests=fast%2Ftext%2Flarge-text-composed-char-dos.html

Alexey Proskuryakov

Comment 6 2011-03-14 12:53:06 PDT

I see what's going on. When a text node length limit cannot be satisfied due to a composed sequence that's longer than 64K, the result depends on what size data chucks are coming in.

Alexey Proskuryakov

Comment 7 2011-03-14 12:54:27 PDT

Created attachment 85704 [details] composed sequence in adjacent nodes I think that it's ultimately a text rendering bug that composed sequences cannot span text nodes. See attached test case for one manifestation of it.

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