[Webkit-unassigned] [Bug 12627] register context saved by setjmp is skipped by GC on windows

Mon Jun 13 23:05:01 PDT 2011

https://bugs.webkit.org/show_bug.cgi?id=12627

Gavin Barraclough <barraclough at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
                 CC|                            |barraclough at apple.com

--- Comment #1 from Gavin Barraclough <barraclough at apple.com>  2011-06-13 23:05:01 PST ---
> If my understanding of the above code is correct, the assumption here is that the address of dummy should be lower than jmp_buf (assuming stack going downawards) so all saved register context will be included. however, this is not the case for windows by examining the stack at run time:

I think this analysis was correct, however the code has changed a lot since then.  Looking at MachineThreads::gatherFromCurrentThread now, the jmp_buf is marked separately (there are two calls to conservativeRoots.add).

Looks like this was a bug, but has since been fixed.

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