Hi Eli, Thanks for you help. Unfortunately, it doesn't seem to work. I literally cut the code and pasted in a rkt file with #lang racket at the top. I ran it with the racket CLI, and received: '()
Should I be invoking the CLI with some option? Any other ideas? -- Chad On Sun, Jun 24, 2012 at 2:08 PM, Eli Barzilay <e...@barzilay.org> wrote: > A few minutes ago, Chad Albers wrote: >> Hi, >> >> Is there some sort of 'secret' to acquiring the stack trace of an >> exception? It is my understanding that when an exception is raised >> with the 'error' procedure in creates a exn:fail structure that has >> a message field and a continuation-marks field. Presumably the >> stack trace is in the continuation-marks field. To actually get the >> stack trace I need to call the following: >> >> (continuation-mark-set->context (exn-continuation-marks exception)) > > This should work -- for example, I see a stack trace with: > > (with-handlers ([void (λ (e) (continuation-mark-set->context > (exn-continuation-marks e)))]) > (+ 1 "two")) > > >> However, whenever I call this, it yields an empty list: () - Not a >> stack trace. > > That can happen from running code in threads which start from an empty > context. For example, doing the above in a thread: > > (thread (λ () (printf "~s\n" ...same...))) > > shows an empty trace. > > -- > ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: > http://barzilay.org/ Maze is Life! ____________________ Racket Users list: http://lists.racket-lang.org/users
