CHICKEN (c) 2008-2020, The CHICKEN Team (c) 2000-2007, Felix L. Winkelmann Version 5.2.0 (rev 317468e4) linux-unix-gnu-x86-64 [ 64bit dload ptables ] Type ,? for help. #;1> (import srfi-18) (define (f) (error "BAM")) (thread-start! (lambda () (f))) ; loading /usr/local/lib/chicken/11/srfi-18.import.so ... ; loading /usr/local/lib/chicken/11/srfi-18.so ... #;2> ,exn #;3> # #;4> Warning (#): in thread: BAM Call history: (f) [f] (error "BAM") <-- #;4>