commit | 6c92767bcb953953dd9a27cd505a402faf78a3a2 | [log] [tgz] |
---|---|---|
author | Morten Stenshorne <mstensho@chromium.org> | Fri May 05 07:46:03 2023 |
committer | Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> | Fri May 05 07:59:38 2023 |
tree | d7938988c7f16f2fcac86b1f0bab74c3499ad33a | |
parent | d3af881365ff04586c84e4354456aeaf93e8d2f5 [diff] |
Stay away from fragment-less boxes during paint / pre-paint. Some layout boxes have no fragments, which means there's nothing to paint or hit-test. This may happen for: * Excess children of LayoutNGFrameSet (i.e. LayoutFrame or LayoutNGFrameSet) that don't fit within the grid defined by the frameset * LayoutNGTableColumn (never creates fragments) * LayoutNGView (iframes in certain states) The test included doesn't actually crash without the code in this CL, since we already had some guards against fragment-less boxes. Without CL:4392606 and CL:4236260 it would crash, though. This CL also makes us bail in pre-paint at fragment-less boxes, so that the paint property tree builder can assume that a LayoutBox always has fragments (in an upcoming CL). Bug: 1409273 Change-Id: I63ffaf0a4550aeb73d935edd63e2cec544d78eaf Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4476730 Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org> Commit-Queue: Morten Stenshorne <mstensho@chromium.org> Cr-Commit-Position: refs/heads/main@{#1139965}
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