$ cat dw.scm (dynamic-wind (lambda () 0) (lambda () (error 0)) (lambda () (display "hi") (newline))) $ guile dw.scm ;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0 ;;; or pass the --no-auto-compile argument to disable. ;;; compiling /home/mario/tmp/gosling/dw.scm ;;; compiled /home/mario/.cache/guile/ccache/3.0-LE-8-4.6/home/mario/tmp/gosling/dw.scm.go Backtrace: In ice-9/boot-9.scm: 1752:10 6 (with-exception-handler _ _ #:unwind? _ # _) In unknown file: 5 (apply-smob/0 #) In ice-9/boot-9.scm: 724:2 4 (call-with-prompt _ _ #) In ice-9/eval.scm: 619:8 3 (_ #(#(#))) In ice-9/boot-9.scm: 2836:4 2 (save-module-excursion _) 4388:12 1 (_) In /home/mario/tmp/gosling/dw.scm: 3:15 0 (_) /home/mario/tmp/gosling/dw.scm:3:15: 0 hi $ gsi dw.scm *** ERROR IN "dw.scm"@1.1 -- 0 $ csi -s dw.scm Error: 0 Call history: (chicken.load#load-unit (##core#quote expand) (##core#quote #f) (##core#quote #f)) dw.scm:1 (dynamic-wind (lambda () 0) (lambda () (error 0)) (lambda () (display "hi") (newline))) dw.scm:2 (lambda () 0) dw.scm:2 (##core#lambda () 0) (##core#begin 0) dw.scm:3 (lambda () (error 0)) dw.scm:3 (##core#lambda () (error 0)) (##core#begin (error 0)) dw.scm:3 (error 0) dw.scm:4 (lambda () (display "hi") (newline)) dw.scm:4 (##core#lambda () (display "hi") (newline)) (##core#begin (display "hi") (newline)) dw.scm:5 (display "hi") dw.scm:6 (newline) dw.scm:1 (dynamic-wind (lambda () 0) (lambda () (error 0)) (lambda () (display "hi") (newline))) dw.scm:3 (error 0) <--