by tripping up proc: (define (malloced) ;; prudence or superstition? you be the judge! (gc) (gc) (assq-ref (gc-stats) 'bytes-malloced)) in test/leak.scm. A related issue is how the error is reported. It seems strange that the file is "unknown". -- Thien-Thi Nguyen ..................................... GPG key: 4C807502 . NB: ttn at glug dot org is not me . . (and has not been since 2007 or so) . . ACCEPT NO SUBSTITUTES . ........... please send technical questions to mailing lists ...........