664803 - Firefox hangs forever on print preview

Status: RESOLVED WORKSFORME

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

Description

[Guilherme Lima]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:7.0a1) Gecko/20110616 Firefox/7.0a1
Build Identifier: 

Summary says everything

Reproducible: Always

Steps to Reproduce:
1.Open the URL from the url field
2.On Firefox, select Print Preview
3.Firefox hangs, using 100% of a CPU core.



The problem occurs on Firefox 4.0.1 and on nightly, so I suspect Beta and Aurora also have the same problem.

Comment 1

[Matthias Versen [:Matti]]

confirming with FF4.0.1 on win7/32

Comment 2

[(mostly gone) XtC4UaLL [:xtc4uall]]

Confirmed against Mozilla/5.0 (Windows NT 5.1; rv:7.0a1) Gecko/20110617 Firefox/7.0a1 ID:20110617030741

Comment 3

[(mostly gone) XtC4UaLL [:xtc4uall]]

Attachment: WinDbg Log

Comment 4

[Boris Zbarsky [:bzbarsky]]

Yeah, all the time is taken renumbering lists.  David, any idea why?

Comment 5

[Guilherme Lima]

David, ping?

Comment 6

[Alice0775 White]

Regression window
Works:
http://hg.mozilla.org/mozilla-central/rev/2ffbe81d752f
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101006 Firefox/4.0b8pre ID:20101006180223
Fails:
http://hg.mozilla.org/mozilla-central/rev/d73c25aaf89b
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101006 Firefox/4.0b8pre ID:20101006200257
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=2ffbe81d752f&tochange=d73c25aaf89b

Triggered by:
41690fececaf	Boris Zbarsky — Bug 129941. Don't create scrollframes for blockframes (except inline blocks) while printing, and make such blockframes clip their contents instead. r=dbaron

Comment 7

[Guilherme Lima]

FYI, print previewing this URL in IE9 and Chrome 24 don't give the correct result. They preview something totally wrong.

Comment 8

[Robert Utasi [:hunboy]]

Attachment: partially reduced testcase

I partially reduced the webpage and noticed too big margin-left and margin-right is defined and that presses the content so it tries to generate thousands of pages and this causes the exponential runtime and hang.

I upload the testcase, this is already good, so good for checking the printing result.

Comment 9

[Robert Utasi [:hunboy]]

When I remove the width: 100%; from the <li> element, it prints well.

Comment 10

[Guilherme Lima]

The original page now needs login, I don't have one.

On the attached testcase, Firefox 45 takes a couple of seconds to print preview, and the result is totally wrong (the same result as Chrome 49).
Nightly 48 prints very fast and the result is correct! Robert, is it possible for you to check everything is fine now?

Comment 11

[Robert Utasi [:hunboy]]

It prints as expected on the current release, so in my opinion as I mentioned before, it should be a bug in the testcase with wrong css rules. You can close this bug as WORKSFORME yeah.