What architecture? Robby
On Tue, Jun 26, 2012 at 2:37 AM, Chad Albers <calb...@neomantic.com> wrote: > I'm using Debian Linux. > -- > Chad Albers > > > On Sun, Jun 24, 2012 at 10:08 PM, Matthew Flatt <mfl...@cs.utah.edu> wrote: >> What platform are you using? >> >> If it's Win64, the problem is likely Racket's weak support for getting >> a backtrace on that platform (when the JIT is enabled). >> >> At Sun, 24 Jun 2012 22:01:02 +0900, Chad Albers wrote: >>> 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 > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
