Hi, Jon Wilson <[EMAIL PROTECTED]> writes:
> I'm running guile-1.8.2 on ubuntu feisty. The following function > causes guile to segfault: > > guile> (define (consing lst) (consing (cons lst lst))) > guile> (consing '()) > Segmentation fault (core dumped) > > I understand that guile should never ever segfault from plain scheme code. Right, but you're nastily provoking it. ;-) We don't hit an out-of-memory situation here, but rather a stack overflow while marking: #0 0xb7ed15d8 in scm_gc_mark_dependencies (p=0xb7b0f5e8) at ../../libguile/gc-mark.c:218 #1 0xb7ed16cc in scm_gc_mark (ptr=0xb7b0f5e8) at ../../libguile/gc-mark.c:169 #2 0xb7ed15dd in scm_gc_mark_dependencies (p=0xb7b0f5a0) at ../../libguile/gc-mark.c:218 #3 0xb7ed16cc in scm_gc_mark (ptr=0xb7b0f5a0) at ../../libguile/gc-mark.c:169 The thing here is that the GC is essentially traversing a tree in a non-tail-recursive fashion. FWIW, the `libgc'-based Guile doesn't have this problem, it just keeps consing. Thanks, Ludovic. _______________________________________________ Bug-guile mailing list Bug-guile@gnu.org http://lists.gnu.org/mailman/listinfo/bug-guile
