Bug 90208 – [V8] HTMLCollection wrappers are not retained

• Component: DOM
• Status: RESOLVED FIXED

[Erik Arvidsson]

The following fails with the V8 bindings because we are not keeping the wrapper for the HTMLFormCollection alive

var form= ....
form.elements.custom = 42;
gc();
shouldBe('form.elements.custom', '42');

This causes a test as part of bug 90194 to fail in V8.

[Erik Arvidsson]

Created attachment 150221 [details]
Patch

[Adam Barth]

Comment on attachment 150221 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=150221&action=review

> Source/WebCore/bindings/scripts/IDLAttributes.txt:55
> -GenerateIsReachable=|Impl|ImplContext|ImplDocument|ImplElementRoot|ImplFrame
> +GenerateIsReachable=|Impl|ImplContext|ImplDocument|ImplElementRoot|ImplFrame|ImplBaseRoot

Would you be willing to update the documentation about this property?  I don't really understand what these various values mean:
https://trac.webkit.org/wiki/WebKitIDL#JSGenerateToJSObject

[Erik Arvidsson]

(In reply to comment #2)
> Would you be willing to update the documentation about this property?

Sure thing.

[Adam Barth]

Comment on attachment 150221 [details]
Patch

This LGTM, with the caveat that I don't know whether ImplBaseRoot is a sensible name, but it seems in line with the names of the other values this property can take.

[Erik Arvidsson]

(In reply to comment #4)
> (From update of attachment 150221 [details])
> This LGTM, with the caveat that I don't know whether ImplBaseRoot is a sensible name, but it seems in line with the names of the other values this property can take.

The names comes from ...::root(impl()->base()). For V8 we don't do the root part but other than that it is the same. I'll try to explain that in the wiki. The values for these make almost no sense without actually looking at the code gen and/or the .h files.

[Erik Arvidsson]

I filed bug 90317 to look into using WebCore::root for V8 too.

[Erik Arvidsson]

Created attachment 150272 [details]
Patch for landing

[WebKit Review Bot]

Comment on attachment 150272 [details]
Patch for landing

Clearing flags on attachment: 150272

Committed r121615: <http://trac.webkit.org/changeset/121615>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.