[Mono-bugs] [Bug 604479] WeakReference doesn't seem to be collected after System.GC.Collect()

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http://bugzilla.novell.com/show_bug.cgi?id=604479

http://bugzilla.novell.com/show_bug.cgi?id=604479#c2


Rodrigo Kumpera <rkumpera at novell.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |rkumpera at novell.com
         Resolution|                            |WONTFIX

--- Comment #2 from Rodrigo Kumpera <rkumpera at novell.com> 2010-05-10 23:20:31 UTC ---
The boehm GC does conservative scanning of the stack so there is no reliable
way to ensure that all on stack references to a given object have vanished.

Not only that, but the "o = null" store is dead and will be removed by the JIT.

The collector should be able to eventually clean up the reference, but it is by
no mean meant to be deterministic.

The new GC in 2.8 alleviates parts of this problem and will eventually feature
some form of precise stack scanning. But for 2.6 there is nothing that can be
done.

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