diff options
Diffstat (limited to 'module/system/foreign.scm')
-rw-r--r-- | module/system/foreign.scm | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/module/system/foreign.scm b/module/system/foreign.scm index 781e79369..37f9b41ac 100644 --- a/module/system/foreign.scm +++ b/module/system/foreign.scm @@ -37,6 +37,8 @@ null-pointer? pointer? make-pointer + pointer->scm + scm->pointer pointer-address pointer->bytevector @@ -190,9 +192,12 @@ which does the reverse. PRINT must name a user-defined object printer." ;; PTR1 == PTR2 <-> (eq? (wrap PTR1) (wrap PTR2)). (let ((ptr->obj (make-weak-value-hash-table 3000))) (lambda (ptr) - (let ((key+value (hash-create-handle! ptr->obj ptr #f))) - (or (cdr key+value) - (let ((o (%wrap ptr))) - (set-cdr! key+value o) - o)))))) + ;; XXX: We can't use `hash-create-handle!' + + ;; `set-cdr!' here because the former would create a + ;; weak-cdr pair but the latter wouldn't register a + ;; disappearing link (see `scm_hash_fn_set_x'.) + (or (hash-ref ptr->obj ptr) + (let ((o (%wrap ptr))) + (hash-set! ptr->obj ptr o) + o))))) (set-record-type-printer! type-name print))))))) |