Thanks to Erik's recent work to support both object finalizers and weak reference, and my own recent implementation of weak hash tables, ABCL as of [r13310][] now supports [trivial-garbage][] with the [attached patch][trivial-garbage-20101006-darcs-abcl-20110607a.diff]. [r13310]: http://trac.common-lisp.net/armedbear/changeset/13310 [trivial-garbage]: http://www.cliki.net/trivial-garbage [trivial-garbage-20101006-darcs-abcl-20110607a.diff]: http://detroit.slack.net/~evenson/abcl/trivial-garbage-20101006-darcs-abcl-2... -- "A screaming comes across the sky. It has happened before, but there is nothing to compare to it now."