534368 - "ASSERTION: continuations should have the same style context" with -moz-column, abs pos

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Jesse Ruderman]

Attachment: testcase

This terrible testcase, which has visible <style> elements, triggers:

###!!! ASSERTION: continuations should have the same style context: 'oldContext == nextContinuationContext || oldContext->GetPseudo() != nextContinuationContext->GetPseudo() || oldContext->GetParent() != nextContinuationContext->GetParent()', file /Users/jruderman/mozilla-central/layout/base/nsFrameManager.cpp, line 1303

Comment 1

[Jesse Ruderman]

Oops, I forgot to mention that it only triggers the assertion half of the time.

Comment 2

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

The two contexts in question are the style contexts for the <style style="position: absolute; display: block;">, which are two block frames (continuations of each other), both children of block frames for the :-moz-column-content of the HTML element (i.e., columns).  aFrame is on the absolute list of the first column; its next continuation is on the overflow containers list of the second column.

Comment 3

[Jesse Ruderman]

WFM