SIGSEGV in GC_mark_from

Wed Sep 5 22:17:00 GMT 2001

On Wed, 5 Sep 2001, Boehm, Hans wrote:
> I assume this is the trunk?

Yes.
> You might check that current_p points to an object which is properly
> described, i.e. has a pointer to a proper vtable.

The first word at current_p points to another heap object. It's not yet
clear to me whether current_p is invalid or it was somehow overwritten.
> Failing that, probably the only real way to debug this is to insert code
> that looks for absurd descriptors at various places, i.e. anything huge with
> the 4 low order bits zero. I would start by inserting such a test around
> line 622.

That helps, thanks.
Jeff