62303 - Crash occurs when Nav4 plug-in is called to load the same object twice

Status: VERIFIED INCOMPLETE

(Core Graveyard :: Plug-ins, defect, P3)

Description

[Shari McClure]

From Bugzilla Helper:
User-Agent: Mozilla/4.76 [en] (Win98; U)
BuildID:    M18 (Netscape 6 - Released)

The Prizm plug-in displays scanned image files.  When a user clicks on a link to 
a TIFF file, Netscape calls the plug-in to display the image.  If you click on 
the same link again, an invalid page fault occurs before the plug-in is loaded 
the second time.  The same plug-in works fine in all versions of Netscape 4.x 
(tested heavily with 4.08, 4.5 and 4.7x).

Reproducible: Always
Steps to Reproduce:
1. Copy plug-in DLL to NS 6 plugins directory (default:  c:\Program 
Files\Netscape\Netscape 6\Plugins.  Plug-in DLL located at 
http://www.hq.tmsinc.com/tmss/bughelp.html.
2. Restart browser.
3. Browse to this URL: (http://www.tmsinc.com/prizmcorporate/pzc_samples.html)
4. Click on a link to an image.  The image will come up in the plug-in.  Do NOT 
click on the link to the "List File."
5. Click the back button to release the plug-in.
6. Click on the same link to the same image.

Actual Results:  After following the steps above, a dialog will pop up 
indicating that an error occurred and recommends that you shut down Netscape.  
After closing Netscape, you get an error message about an invalid page fault.  
Contents of that error message is below.
 
NETSCP6 caused an invalid page fault in
module MSVCRT.DLL at 0167:7800d5ca.
Registers:
EAX=0160ae84 CS=0167 EIP=7800d5ca EFLGS=00010202
EBX=00770084 SS=016f ESP=0065ead8 EBP=0065eaf8
ECX=00da7f58 DS=016f ESI=00000001 FS=683f
EDX=00da7f9c ES=016f EDI=0160af50 GS=0000
Bytes at CS:EIP:
89 4c 11 fc 8b 75 f0 03 d1 8d 4e 01 89 0a 89 4c 
Stack dump:
60affe30 00000030 00dd34a0 fbffffff 00000040 0160b3d0 00da7f58 00000002 0065eb2c 
7800cc7f 10770084 60affe30 00dd34a0 00dd34a0 00000004 007e4630 

Expected Results:  The browser should have called the plug-in again with the 
same data stream.  The plug-in should have loaded and then displayed the image 
data.

Also tested under Windows 2000 and Windows NT 4.  These operating systems 
exhibit the same problem.

Comment 1

[Duncan Findlay]

Shari - Thanks for your input, but the correct place for
reporting Netscape 6 bugs is <http://home.netscape.com/browsers/6/feedback/>.
Unfortunately, mozilla.org doesn't have the resources to cope with their bugs as
well as
our own. :-) Additionally, lots of stuff which is broken in their version
is now fixed in ours.

However, if you see this problem in a recent build of Mozilla, which is avalable
from ftp://ftp.mozilla.org/pub/mozilla/nightly/latest/ feel free to return and
ask for this bug to be reopened.

Marking INVALID (don't take it personally, Bugzilla doesn't have a politer option
;-)

Duncan Findlay

Comment 2

[shrirang khanzode]

spam : marking invalid bugs 'verif'. reopen if u disagree, reporter!

Comment 3

[timeless]

http://www.accusoft.com/prizmviewerdownload.htm

the plugin claims to support Mozilla, so I'm assuming you guys managed to work out the problem.

If you're still having problems, please file a new bug using one of:
https://developer.mozilla.org/En/How_to_get_a_stacktrace_for_a_bug_report
https://developer.mozilla.org/En/How_to_get_a_stacktrace_with_WinDbg

to provide a stack trace, and please use a current version of Firefox (3.6.3 is the latest official release at this time)