I can't reproduce it, but I'm using the latest mater. Could you provide your version? 2014年8月9日 下午5:47于 "David Kastrup" <d...@gnu.org>写道：
> > This is actually a duplicate of issue 14792 which has been ignored for > over a year by now. > > Please see <URL:http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14792#35> > for the reason the provided patch (namely discouraging the use of > numbers for object properties) is the only one making sense. > > Here is the rationale in code: object properties are implemented via > key-weak hash tables, and weak hash tables will not work with eqv? as > equivalence since key-weakness is related to garbage collection which > cannot consider anything but eq?-equivalence. > > scheme@(guile-user)> (define x (make-weak-key-hash-table)) > scheme@(guile-user)> (hashv-set! x 100000000000000000000 #t) > $6 = #t > scheme@(guile-user)> (gc) > scheme@(guile-user)> (hashv-ref x 100000000000000000000) > $7 = #f > > Guile and/or Scheme do not store the equivalence relation in the > hashtable itself, and user-definable hash functions may establish > arbitrary relations regarding key uniqueness that have no clear relation > to the object identity used by garbage collection. > > -- > David Kastrup > > > >
