On Tue, 15 Feb 2005 18:39:44 -0500, Alan Grover <[EMAIL PROTECTED]> wrote: > Guile 1.6.4 > Linux xxxx 2.6.5-7.145-default #1 Thu Jan 27 09:19:29 UTC 2005 i686 i686 > i386 GNU/Linux > SuSe 9.1 > > Some instance and class introspection procedures give anomalous results. > Specifically, they seem to give false when they shouldn't. > > My results (from code below, just for current-input-port). Note the #f's": > ; from interactive guile > (class #<<class> <soft-input-port> 8087280> > instance? #f > (is-a? <soft-input-port>) #f > class-direct-supers (#<<class> <soft-port> 80872b0> #<<class> > <input-port> 8084110>) > (is-a? <input-port>) #t > > Results are repeatable if tried in the same interactive interpreter, or > run from a script. However, I get the following variations: > > * Run from a script: (is-a? <soft-input-port>) #t > * Use my .guile: (is-a? <soft-input-port>) #t
* instance? should give #f since the port is not a normal GOOPS instance but rather a built-in datatype. * the class-direct-supers list looks OK * (is-a? <input-port>) gives the correct value #t The only thing anomalous above is that (is-a? x <soft-input-port>) gives #f in the interpreter. I can't repeat that in the development version, so it seems specific to Guile-1.6.4. Can someone else look into that? Thanks, M _______________________________________________ Bug-guile mailing list Bug-guile@gnu.org http://lists.gnu.org/mailman/listinfo/bug-guile