323421 - Unhandled exception at 0x002d5ea4 (js3250.dll) in xulrunner.exe: 0xC0000005: Access violation reading location 0x00000004.

Status: RESOLVED INCOMPLETE

(Core :: JavaScript Engine, defect)

Description

[Doug Wright]

I'm writing a xulrunner app, and keep crashing...

I've built a debug xulrunner hope I got everything you need from it since I don't know anything about C/C++.

Seen on both MOZILLA_1_8_BRANCH, and trunk.

Comment 1

[Doug Wright]

Attachment: Contents of the 'Call Stack'

Comment 2

[Doug Wright]

Attachment: Screengrab of debugger

Comment 3

[:Gavin Sharp [email: [e-mail]]]

CAn you try and minimize your XUL app and attach it as a testcase? Or provide some other way to reproduce the crash?

Comment 4

[Doug Wright]

(In reply to comment #3)
> CAn you try and minimize your XUL app and attach it as a testcase? Or provide
> some other way to reproduce the crash?
> 

I haven't been able to create a minimal testcase crasher. I only downloaded the xulrunner source and built a debug build because I couldn't!

The best I can do is attach the JS source, and identify the line of code that causes the crash.

This crashes
------------
var filename = outputLocation + DirIO.sep + getResultFromXML('<xsl:value-of select="Collection/DVD[position()=' + (profile + 1) + ']/ID"/>') + '.html';

Replacing it with this, stops the crash
---------------------------------------
var id = getResultFromXML('<xsl:value-of select="Collection/DVD[position()=' + (profile + 1) + ']/ID"/>');
var filename = outputLocation + DirIO.sep + id + '.html';

Comment 5

[Doug Wright]

Attachment: non-minimal code that causes the crash

Comment 6

[Ryan VanderMeulen [:RyanVM]]

I emailed Doug about this bug:
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Actually I think I do have a copy of the app, but it was designed to process the output of a 3rd party program which I don't use anymore, so don't have any suitable input to test it with.

Happy for you to mark the bug as resolved if you want - the JS engine has had major changes since I filed it.
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