Re: the new gc asserts in master

[Han-Wen Nienhuys <hanwen@xs4all.nl>]

Han-Wen Nienhuys escreveu:
>> even the lazy smob case I wrote about here:
>>
>>     http://thread.gmane.org/gmane.lisp.guile.user/6372
> 
> I would classify the use of mark bits outside of the mark phase as outside
> of the defined API.  If you want to have weak pointer semantics, use
> a weak hashtable, or implement reference counting on the C side.
> 
> I am actuallly inclined to add add abort() for anyone who calls scm_gc_mark() 
> outside the marking phase.

Also, you're creating a race condition: the mark bits are not protected by a lock,
so you will be screwed in still more interesting ways if more threads or types 
would start doing this.

-- 
 Han-Wen Nienhuys - hanwen@xs4all.nl - http://www.xs4all.nl/~hanwen