255341 - Mozilla hangs during the long JS-cycle with document.write

Status: RESOLVED WORKSFORME

(SeaMonkey :: General, defect)

Description

[Met - Martin Hassman]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; cs-CZ; rv:1.7.2) Gecko/20040803
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; cs-CZ; rv:1.7.2) Gecko/20040803

During the long cycle with document.write() Mozilla hangs (depending on the
length of the cycle - sometimes only for some minutes, sometimes for ever)
without showing dialog "Do you want abort the script?".

E.g.:
document.write("<table>");
for(i=1; i<10000; i++) document.write("<tr><td>1</td></tr>");
document.write("</table>");


When you document.write not table cells but only string, it is quick enough:
document.write("<table>");
for(i=1; i<10000; i++) document.write("1");
document.write("</table>");


Reproducible: Always
Steps to Reproduce:

Comment 1

[Met - Martin Hassman]

Attachment: Hang testcase

Testcase

Comment 2

[Adam Hauner]

WFM 2004081109/Seamonkey-trunk/W2K (950 MHz, 650 MB)

Comment 3

[Boris Zbarsky [:bzbarsky]]

The testcase runs in about 4 seconds here with a current build.

Comment 4

[Met - Martin Hassman]

> The testcase runs in about 4 seconds here with a current build.
And I thought I have quick computer ;-(
Try to enlarge the 'for loop' in the testcase.

Comment 5

[Boris Zbarsky [:bzbarsky]]

> And I thought I have quick computer ;-(

I have a P3-733... hardly "quick".

Please do make sure to be testing a current trunk build, not 1.7, though.

Comment 6

[Met - Martin Hassman]

Attachment: Large cycle

OK, testcase wit hlarge cycle.

Comment 7

[Met - Martin Hassman]

OK, tested on nigthtly Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8a3)
Gecko/20040812, Build ID: 2004081208

Ouuu, it is pretty much quicker! After enlarging the cycle, Mozilla freezes for
about 20 sec and then allows me to stop the script.

OK, closing.

Boris>But I am not sure whether complete Mozilla freenzing for 20 sec by one
webpage still is not bug to be considered.