51529 - Animated GIFs load each time the animation cycles

Status: VERIFIED DUPLICATE of bug 48546

(Core :: Graphics: ImageLib, defect, P3)

Description

[kmshanah]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux 2.2.14-5.0 i686; en-US; m18) Gecko/20000904
BuildID:    2000090421

When viewing an animated gif, the image seems to reload each time that the
animation sequence completes. The browser says "document done" after the first
load, and the "stop loading" button is disabled.

I noticed this because when viewing certain pages, my modem would not stop
loading when the page was complete. When I narrowed it down to the animated GIFs
and just loaded a single one (with no html), I could hear the loading happen
exactly at the begining of each animation cycle (my modem makes a noise when
transferring data).

The bug occur with the GIF alone and also in the full page.

Example GIF: http://bluesnews.com/miscimages/banners/m_blu_butt.gif
In it's frame: http://bluesnews.com/contents.html
Whole page: http://bluesnews.com


Reproducible: Always
Steps to Reproduce:
1. run mozilla
2. enter URL of GIF (http://bluesnews.com/miscimages/banners/m_blu_butt.gif)
3. monitor your network traffic (however you do that, for me it's listen to my
modem or watch the lights for activity).


Actual Results:  The animated GIF was loaded every time it's animation sequence
began.


Expected Results:  Only load the image once, and loop the animations.

Comment 1

[Jeffrey Baker]

That isn't happening here at Linux 2000-09-06-08.  I didn't put the stethoscope
to my modem, but I did use tcpdump.

Comment 2

[R.K.Aa.]

dup of bug 48546, marked fixed Sept. 2nd.

*** This bug has been marked as a duplicate of 48546 ***

Comment 3

[Diego]

Very odd It's fixed for me, tested with 2000090208 and with 2000090508
(two days before and one after your nightly build).Tested with tcpdump, with and
without proxy (checked also the proxy logs).

Could you test it with tcpdump instead of hearing the modem?
If it tells that gifs are really reloaded, and you are sure that you have
a post 2000090121 build, please send comments to bug 48546:
http://bugzilla.mozilla.org/show_bug.cgi?id=48546

Marked verified dupe of fixed bug 48546: "Too many progress messages generated
for animated GIFs"