1126217 - Cannot create inline Web Worker in Firefox 35 addon

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[[e-mail]]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.99 Safari/537.36

Steps to reproduce:

I'm developing a XUL based Firefox extension. Tried to create an inline Web Worker using Blob in chrome scope.

Here is a code sample:

    Components.utils.import("resource://gre/modules/devtools/Console.jsm");
    Components.utils.importGlobalProperties(['Blob', 'URL']);

    try {
        var blob = new Blob(["function f(){}"], {type: "application/javascript"});
        var url = URL.createObjectURL(blob);
        var worker = new Worker(url);
    } catch(e) {
        console.error(e);
    }


Actual results:

Got an error: Failed to load script (nsresult = 0x805303f4). The url value looks like this "blob:null/371e34bd-1fbf-4f66-89cc-24d0c1c7bad5"


Expected results:

The Web Worker should be created. The following code works fine in Firefox 33 and older versions.

Comment 1

[Alice0775 White]

This seems to be fixed in Beta36+.
Could you test with latest Beta36[1], Dev37.0a2[2] and Nightly38.a2[3]?

[1] https://www.mozilla.org/en-US/firefox/channel/#beta
[2] https://www.mozilla.org/en-US/firefox/channel/#developer
[3] https://nightly.mozilla.org/

Comment 2

[[e-mail]]

(In reply to Alice0775 White from comment #1)
> This seems to be fixed in Beta36+.
> Could you test with latest Beta36[1], Dev37.0a2[2] and Nightly38.a2[3]?
> 
> [1] https://www.mozilla.org/en-US/firefox/channel/#beta
> [2] https://www.mozilla.org/en-US/firefox/channel/#developer
> [3] https://nightly.mozilla.org/

The issue is not reproducible in Beta, Dev and Nightly.

Comment 3

[[e-mail]]

The issue is still reproducible with bootstrapped XUL extension in Firefox 36.0.4 and 37.0 Beta. However in Firefox 38.0a1 the issue appears to be fixed.

Comment 4

[Nickolay_Ponomarev]

Are you OK with resolving/worksforme then? I doubt this is important enough to be uplifted to earlier branches and I couldn't quickly find where this got fixed.

Comment 5

[[e-mail]]

I'm OK with this. However this bug completely blocks my extension and makes it almost useless.

Comment 6

[Nickolay_Ponomarev]

Sorry about that; good thing we have releases at regular intervals, so this will be on release in about 1 month! If you find that this stops working on 38 or nightly, please reopen.