288931 - attack of the marquees hangs mozillla

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Bernd]

one of the classical mangleme testcases (nearly) hangs mozilla.
It looks like in xul we coerce a large number to NS_UNCONSTRAINEDSIZE  and have
a styled height with a NS_UNCONSTRAINEDSIZE predefined height and and start looping.

Comment 1

[Bernd]

Attachment: coerce demo

Comment 2

[Bernd]

the coerce demo will cause in a debug build:

nsBlockReflowContext: HTMLScroll(div)(0)@03475F1C metrics=13392,1073741824!
nsBlockReflowContext: Block(body)(2)@034746D4 metrics=13392,1073741824!
nsBlockReflowContext: HTMLScroll(div)(0)@03475F1C metrics=13152,1073741824!
nsBlockReflowContext: Block(body)(2)@034746D4 metrics=13152,1073741824!
###!!! ASSERTION: non-root frame's desired size changed during an incremental re
flow: 'first == root || (aDesiredSize.width == size.width && aDesiredSize.height
 == size.height)', file e:/moz_src/mozilla/layout/base/nsPresShell.cpp, line 905

Comment 3

[Bernd]

the default for a computed max height is NS_UNCONSTRAINEDSIZE this corresponds
to 0x40000000.On my machine the large height is just above that, somewhere
around 0x46......, so we coerce the preferered size in xul to NS_UNCONSTRAINEDSIZE.

Comment 4

[Martijn Wargers (dead)]

Url testcase freezes in 2005-04-28 build, but works in 2005-04-29 build.
Probably fixed by bug 240276?

Comment 5

[Jack Whelpton]

WFM with

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20050816
Firefox/1.6a1

Should this be marked as fixed?

Comment 6

[Simon Paquet [:sipaq]]

WFM on Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b4) Gecko/20050910
Firefox/1.4

-> WFM