818924 - Android crash in libc on call to an undefined javascript function (triggered by older version of Pacman Canvas app)

Status: RESOLVED WONTFIX

(Firefox for Android Graveyard :: General, defect)

Description

[Andrew Williamson [:eviljeff]]

This bug was filed from the Socorro interface and is 
report bp-689a24ec-2c68-40d9-854f-32cf52121206 .
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Comment 1

[Jason Smith [:jsmith]]

Andrew - Can I get more information here?

Comment 2

[Andrew Williamson [:eviljeff]]

Yeah sorry, I filed it on the device and thought it would pull across more information.

It was from the Pacman Canvas app. Crashes on Android; doesn't on FxOS/Desktop. 
https://marketplace.firefox.com/app/pacman-canvas-early-beta/

Comment 3

[Andrew Williamson [:eviljeff]]

The developer has fixed the app now so it no longer crashes. The bug should still be fixed if possible though.

Comment 4

[Robert Kaiser]

The question is what kind of code triggered this. As the developer seems to have identified that, could we get a record of that here, please?

Comment 5

[chregi.glatthard]

Hello,
I am the dev of the app that seems to have caused the crash.
The bug that occured in the corresponding version of the app was a call to an undefined javascript function.

Comment 6

[Robert Kaiser]

(In reply to chregi.glatthard from comment #5)
> The bug that occured in the corresponding version of the app was a call to
> an undefined javascript function.

Is it possible to create a minimized testcase that just has such a call and see if it also shows this behavior (crash on Android)? If so, we'd love to have that on there.
Even if calling such a function might not be correct JS code, we shouldn't crash our JS engine with it.

Comment 7

[Robert Kaiser]

chregi.glatthard, could you please help us with a testcase here? See comment #6, we'd be really happy to get our hands on some code that causes this crash so we can debug.

Comment 8

[chregi.glatthard]

Hello,
sorry for taking such a long time to answer.

I guess to recreate this you would just have to build an app with javascript.
In it there should be a loop and in the loop you would have to call an undefined funtion.

i.e:

function animationLoop() {

undefinedfunction();

animationLoop();

}

That was all I know there was, which could have caused the error from my side.