> The original report doesn't seem to be a true worker failure, but rather an 
> artifact of the way GC works in JSC. Since JSC uses conservative GC, it's 
> quite possible for the VM to think that there's a dangling reference to a 
> Worker even though there isn't actually one, and that seems to be what's 
> happening here (workers would get shutdown when the parent document closes 
> regardless, so there's no actual leak). Unless someone has some idea of how 
> to make this GC more deterministic, my recommendation would be to just 
> disable this test and close this bug, since seemingly it's the test itself 
> that is not reliable, not the underlying worker code.

If the test just tries to determine whether an object has been collected, and 
it discovers that the object hasn't been collected in JSC, and the reason it 
hasn't been collected is that the conservative mark method finds a pointer to 
it on the stack, then disabling the test seems reasonable.

However, the I don't think anyone has proven those things, and the code 
involved looks pretty wonky, so something else may be going wrong here.

Geoff
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