301844 - ASSERTION: bad prev-in-flow ancestor chain: 'nsLayoutUtils::IsProperAncestorFrame(prevBlock, fpif)'

Status: RESOLVED WORKSFORME

(Core :: Layout: Block and Inline, defect)

Description

[Mats Palmgren (inactive)]

STEPS TO REPRODUCE
1. load URL
2. File -> Print Preview

ACTUAL RESULTS
###!!! ASSERTION: bad prev-in-flow ancestor chain:
'nsLayoutUtils::IsProperAncestorFrame(prevBlock, fpif)', file nsBlockFrame.cpp,
line 4922


http://bonsai.mozilla.org/cvsblame.cgi?file=mozilla/layout/generic/nsBlockFrame.cpp&rev=3.724&root=/cvsroot&mark=4921,4922#4905

PLATFORMS & BUILDS TESTED
Bug occurs in SeaMonkey debug build on Linux (a few hours old)

Comment 1

[Mats Palmgren (inactive)]

Attachment: Stack leading up to the assertion

Comment 2

[Mats Palmgren (inactive)]

Testcase #1 (attachment 273836 [details]) in bug 389583 also triggers this assertion.
That testcase did not trigger the assertion in a tree that was about
a week old, so it's likely a recent regression (assuming it's the same
problem).

Comment 3

[Mats Palmgren (inactive)]

Ignore the last comment, I didn't realize how old this bug was.
The "bad prev-in-flow" assertion on Testcase #1 from bug 389583 is more
likely a regression from bug 379349 which is handled in bug 389776.

Comment 4

[:Cykesiopka]

Bug 503183 removed the assertion.