705571 - Scratchpad Code can Crash Firefox

Status: RESOLVED WORKSFORME

(DevTools Graveyard :: Scratchpad, defect, P3)

Description

[sys.sgx]

User Agent: Mozilla/5.0 (Windows NT 6.0; rv:8.0.1) Gecko/20100101 Firefox/8.0.1
Build ID: 20111120135848

Steps to reproduce:

1. Open Scratchpad
2. Enter the following piece of code:

var a = {
     b: a
}

for (;;) {
     console.log(a.b);
}

3. Run the code
4. Check the memory usage of the browser


Actual results:

Firefox becomes unresponsive, crashes or continues to consume memory from the system.


Expected results:

There should be an option to continue this code with user control.

Comment 1

[Panos Astithas (he/him) [:past] (please ni?)]

Bug triage, filter on PEGASUS.

Comment 2

[Rob Campbell [:rc] (:robcee)]

we should pop up a slow script dialog for these.

Panos tested this and did get a slow script dialog. This might be a problem with machines with lower memory availability.

Can we get some testing to confirm that this bug exists in Firefox 8 and up? Thanks.

Comment 3

[Jeremy Eramian]

Crashed Mozilla and then asked permission to close the script.

Comment 4

[Anton Kovalyov (:anton)]

I got "Unresponsive Script" dialog in Nightly both on Windows and Mac. Closing.