141187 - call to Date.getTime() causes hang on Linux

Status: VERIFIED DUPLICATE of bug 139965

(Core :: JavaScript Engine, defect)

Description

[Pascal Byrne]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0rc1) Gecko/20020417
BuildID:    2002041711

When I visit the site http://www.borland.com, the browser hangs after a few
seconds. Running 'strace' shows the following repeating syscall:

gettimeofday({1020174920, 870828}, NULL) = 0
gettimeofday({1020174920, 874214}, NULL) = 0
gettimeofday({1020174920, 874580}, NULL) = 0
...

I think the following code is to blame:
function popUp(URL) {
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "',
'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=600,height=372');");
}

Reproducible: Always
Steps to Reproduce:
1. Open www.borland.com
2.
3.

Comment 1

[Michiel van Leeuwen (email: mvl+moz@)]

Seeing this too on linux 2002042910
When I turn of 'open unrequested windows' in prefs / advanced / script & windows
the page loads fine. So the call to getTime doesn't seem te be the problem, but
the opening of the window.

Comment 2

[Pascal Byrne]

Turning off 'open unrequested windows' isn't working for me. Only turning off
Javascript helps. Are you seeing lots of calls to gettimeofday() like I am when
 you run mozilla with strace?

Comment 3

[Phil Schwartau]

I am unable to reproduce this with my own Linux Mozilla trunk build
dated 2002042807. Reassigning to Browser-General and cc'ing self
until we can get further information. 

I doubt that Date.getTime() is the cause of this. To see this, just try
this javascript: URL in Mozilla:

javascript: day=new Date();id=day.getTime();alert('day=' + day +'\nid = ' + id);

If this hangs the browser, then it's an engine bug; please reassign
to JavaScript Engine in that case. In the meantime:

1. Pascal, Michiel: what window manager are you using on Linux?
2. What version of Linux do you have?
3. If you know how to use Tools > Web Development > JavaScript Debugger,
   what happens if you step through the Borland site? Do you see anything
   getting called recursively?

Comment 4

[R.K.Aa.]

hang at borland.com also reported in bug 139965

Comment 5

[Michiel van Leeuwen (email: mvl+moz@)]

Hmm, I can not anymore reproduce this.... Tried everything. But when I turn on
'js strict warnings' I see bug 139965.
Ans I saw that running strace on a fine runnig mozilla also shows calls to
gettimeofday. So that seems not te be the problem.

Comment 6

[Pascal Byrne]

If it helps here are my system specs:
  Linux: SuSE Linux 7.3
  Kernel: 2.4.10-4GB
  libc: GLIBC 2.2.4
  KDE: 2.2.1
  Pentium III 1000MHz
  512 Mb RAM

Comment 7

[R.K.Aa.]

testing with a linux CVS build, 2d old: no hang, no crash - nothing unusual. WFM

Comment 8

[Christian :Biesinger (don't email me, ping me on IRC)]

-> JS Engine

WFM, Linux trunk 2002060811

Reporter, does the hang still happen in the latest Mozilla trunk build?

Comment 9

[Pascal Byrne]

The Borland web site has been changed and Mozilla no longer hangs. Since I
didn't make a backup of the page, I can't verify any fix.

Did anyone else backup this web page?

Comment 10

[Matthias Versen [:Matti]]

really reassigning

Comment 11

[Phil Schwartau]

This is a duplicate of bug 139965, which seems to contain an
archived URL to the Borland site.

This bug is mis-titled as "call to Date.getTime() causes hang on Linux".
As far as I know, this isn't the problem; see Comment #3 above.

Pascal: if you paste this in the URL bar and hit "Enter", you
never hang, do you?

javascript: day=new Date();id=day.getTime();alert('day=' + day +'\nid = ' + id);


I will mark this as a duplicate of bug 139965; Pascal as the reporter
of this bug will be cc'ed on bug 139965 to follow its progress.

Of course, if that javascript:URL DOES cause a hang on Linux,
please reopen this bug; thanks -

*** This bug has been marked as a duplicate of 139965 ***

Comment 12

[Phil Schwartau]

Marking Verified Duplicate -