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The crash happens when we try to reparent the absolute/fixed positioned children to the non-column-span wrapper's absolute list. When constructing the multicol container, we want it to be the absolute/fixed position container, not the moz-column-content anonymous blocks. Hence the modification in AppendFramesToParent() and ConstructBlock(). Delete AdjustAbsoluteContainingBlock() because we'd like to reparent absolute/fixed children to non-first continuation of block descendant of multicol. And it doesn't crash anymore today. Differential Revision: https://phabricator.services.mozilla.com/D16728 --HG-- extra : moz-landing-system : lando
34 lines
843 B
HTML
34 lines
843 B
HTML
<!DOCTYPE html>
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<html>
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<meta charset="utf-8">
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<title>CSS Multi-column Layout Test Reference: Test the position of the out-of-flow block is relative to the fragment divided by column-span:all</title>
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<link rel="author" title="Ting-Yu Lin" href="tlin@mozilla.com">
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<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
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<style>
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body {
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column-count: 1;
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column-rule: 6px solid;
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width: 400px;
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outline: 1px solid black;
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}
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h3 {
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/* "column-count: 1" makes this behave like a real spanner. */
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outline: 1px solid blue;
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}
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.out-of-flow {
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position: absolute;
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top: 0;
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left: 0;
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}
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</style>
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<body>
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<article id="column">
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<h3>spanner</h3>
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<div style="transform: scale(1)">
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<div class="out-of-flow">out-of-flow</div>
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</div>
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</article>
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</body>
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</html>
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