Problems with r40628

[Andrew Whitworth]

On Sun, Aug 23, 2009 at 10:45 PM, Austin
Hastings<Austin_Hastings at yahoo.com> wrote:
> At any rate, svn-bisect tells me that the problem comes from r40628, which
> naturally has a whole bunch of files associated with it. (It's never the
> one-line change that gets me... :( )

For those who aren't aware, r40628 was the merger of the auto_attrs
branch. That branch affected the way Parrot_*_attributes structures
are allocated for PMCs. Instead of manually allocating these
structures in VTABLE_init and then having to manually free them again
in VTABLE_destroy, the PMC allocator now reads the necessary size from
the VTABLE structure and allocates (and deallocates) memory
automatically.

I was looking through the code yesterday and found a place in the GC
where I think we are not freeing the attributes structures like we
should. This would mean we are leaking memory after a GC run. If I am
right about the problem the fix should be a relatively easy one. I'll
try to put a patch together soon, but I can't do any local testing
really until I get home from work.

--Andrew Whitworth