49579 2010-11-15 23:09:13 -0800 REGRESSION (r72040): Error image with alt text can cause style to be frozen in a subtree 2010-11-16 14:09:09 -0800 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) All All RESOLVED FIXED HasReduction, LayoutTestFailure, Regression P1 Critical --- 1 mitz webkit-unassigned aestes inferno sam oldest_to_newest 309595 0 73964 mitz 2010-11-15 23:09:13 -0800 Created attachment 73964 Test case See attached test case. The problem is that RenderImage::imageChanged() is called during attach() when an ancestor is attaching during recalcStyle(), and imageChanged() calls setNeedsStyleRecalc(). After recalcStyle() calls attach, it clears the childNeedsStyleRecalc state for itself, but not for all of its descendants leading down to the image. Now there is an island out of which setNeedsStyleRecalc() cannot propagate to the root. 309599 1 mitz 2010-11-15 23:11:47 -0800 <rdar://problem/8672000> 309602 2 mitz 2010-11-15 23:17:38 -0800 This bug was causing fast/block/float/015.html to fail intermittently, so I disabled it in <http://trac.webkit.org/projects/webkit/changeset/72064>. 309893 3 74030 mitz 2010-11-16 13:11:10 -0800 Created attachment 74030 Only defer intrinsic size compoutation if a style recalc is coming 309920 4 74030 simon.fraser 2010-11-16 13:49:55 -0800 Comment on attachment 74030 Only defer intrinsic size compoutation if a style recalc is coming View in context: https://bugs.webkit.org/attachment.cgi?id=74030&action=review > WebCore/ChangeLog:8 > + https://bugs.webkit.org/show_bug.cgi?id=49579 > + > + Tests: fast/block/float/015.html I'd like to see some words here about what the problem was. I don't think the but title is quite enough. 309930 5 mitz 2010-11-16 14:09:09 -0800 Fixed in <http://trac.webkit.org/changeset/72135>. 73964 2010-11-15 23:09:13 -0800 2010-11-15 23:09:13 -0800 Test case frozen-style.html text/html 657 mitz PHN0eWxlPgogICAgI3RhcmdldFtmb29dIHsgY29sb3I6IGdyZWVuOyB9Cjwvc3R5bGU+CjxkaXYg aWQ9ImNvbnRhaW5lciI+CiAgICA8ZGl2PgogICAgICAgIDxpbWcgc3JjPSJ4LWludmFsaWQ6IiBh bHQ9IlNvbWUgd2lkZSB0ZXh0Ij4KICAgICAgICA8ZGl2IGlkPSJ0YXJnZXQiPgogICAgICAgICAg ICBUaGlzIHNob3VsZCBiZSBncmVlbiwgd2l0aCBhIHdpZGUgYnJva2VuIGltYWdlIGFib3ZlLgog ICAgICAgIDwvZGl2PgogICAgPC9kaXY+CjwvZGl2Pgo8c2NyaXB0PgogICAgb25sb2FkID0gZnVu Y3Rpb24oKSB7CiAgICAgICAgZG9jdW1lbnQuYm9keS5vZmZzZXRUb3A7CiAgICAgICAgdmFyIGNv bnRhaW5lciA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCJjb250YWluZXIiKTsKICAgICAgICBj b250YWluZXIuc3R5bGUuZGlzcGxheSA9ICJub25lIjsKICAgICAgICBkb2N1bWVudC5ib2R5Lm9m ZnNldFRvcDsKICAgICAgICBjb250YWluZXIuc3R5bGUucmVtb3ZlUHJvcGVydHkoImRpc3BsYXki 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