162837 - Scrolling a page containing an IFRAME produces garbage.

Status: RESOLVED DUPLICATE of bug 75214

(SeaMonkey :: General, defect)

Description

[hahn]

Mozilla Linux/PC Build ID: 2002072204 and 2002081504

Scrolling down on any of its pages results in garbage being displayed after
about scrolling down one third of the page. Up to a certain point, minimizing
and redisplaying resolves the issue. After this point, minimizing and
redisplaying results in weird things being drawn elsewhere in mozilla's memory
(e.g. parts of other browser windows including navigation buttons and the
sidebar or the download window). Scrolling up reverses this behavior, i.e. the
top of the page always displays correctly.

This bug is probably related to bug 142355, the problem occurs on the URL
referenced there, too.
It is probably also related to bug 138103, the only difference to the issue
reported there is that the critical size is around 1740, not 2200, so you should
consider reopening that bug.

I speculate that it might be caused by wrong pointer arithmetic or an integer
overflow.

Enjoy! 
Tobias Hahn

Comment 1

[hahn]

Attachment: Testcase

This is a testcase showing the problem.

Comment 2

[Mats Palmgren (inactive)]

*** This bug has been marked as a duplicate of 75214 ***