tree cb25d4b898f5a3cbdbcab49fdd74d5fffceaa95a
parent 825b8cfbf84c250bb351d2172525912d999677a4
author Morten Stenshorne <mstensho@chromium.org> 1655828284 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1655829114 -0700

Negative spanner margin may increase available size for columns.

We failed to calculate the stretched nested column block-size correctly,
because we didn't take negative margins from a preceding column spanner
into account. A spanner in a nested fragmentation context with a
negative margin may increase the space available for the columns that
follow. Just set the new size to infinity, and let the clamping code
right after do its job.

Bug: 1321365
Change-Id: Ia952ea6efddbaef18ed04f842eb54026dbd09c19
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3714118
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1016234}