256880 - huge table heights should clamp (at 0x40000000 twips)

Status: NEW

(Core :: Layout: Tables, defect)

Description

[chris]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7) Gecko/20040707 Firefox/0.9.2
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7) Gecko/20040707 Firefox/0.9.2

as the following example shows, a table larger than width="9999999" and
height="9999999" doesn't display correctly. the tiled background image should
cover the whole screen.
http://students.fh-joanneum.at/zagler/ui/welt.htm

in internet explorer the table is displayed correctly even with a
27-digits-width and height.

Reproducible: Always
Steps to Reproduce:
1. just create a table of width="99999999" and height="99999999"
2. set a small table background image
3. display the page in firefox

Actual Results:  
the table background image that should be displayed tiled over the whole table
is just shown once on the top left corner. note that there are no scroll-bars
neither horizontal nor vertical.

Expected Results:  
it should have shown the whole table and let me scroll all over it like in
internet explorer.
please let me say why the hell I need to display such a big page:
I'm working on a project doing the largest webpage in the world. and therefore I
would like it to work in firefox as well! private people, institutions and small
companies should be allowed to buy sections on the page and be respresentet that
way. so I offer you a large piece of land on this page if you manage to display
my width="999999999999999999999999999" table!

Comment 1

[Boris Zbarsky [:bzbarsky]]

Usual units issue.... roc, do we have something reasonable to dup this to?

Comment 2

[Robert O'Callahan (:roc) (email my personal email if necessary)]

This one's a bit unusual. I don't know of any bugs that ask us to support very
large values like this.

Comment 3

[Bernd]

reporter could you please attach a testcase to the bug?

Comment 4

[Carlos Federico Pace]

Attachment: test of error

Comment 5

[Bernd]

Attachment: width="99999999" height="9999999"

the previous attachment does not belong to this bug

Comment 6

[Bernd]

Attachment: width="99999999" height="99999999"

its the last 9 that makes this happening

Comment 7

[Bernd]

the behavior changes at 17895697 px which on my machine corresponds to 0x3FFFFFFC (60 twips) above this we do not clamp to 0x40000000 like we do for width but use the reminder over nscoord_MAX (which is 0x40000000)