Re: Odd Behavior

[Noah Lavine]

Hello again,

I tried finding the error by running compile-file, but I got the
following Guile session:

scheme@(guile-user)> (compile-file "test.scm")
ice-9/boot-9.scm:119:21: Wrong type to apply: #f

Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
scheme@(guile-user)> ,bt
Nothing to debug.

boot-9.scm:119 is in the definition of custom-throw-handler, which is
part of the implementation of catch.

Noah

On Mon, Jan 31, 2011 at 1:44 PM, Noah Lavine <address@hidden> wrote:
> Hello all,
>
> I ran into an error message in Guile, and I'm not sure how to track
> down the cause of it. I used a file called test.scm with the following
> contents:
>
> #!guile
> !#
>
> (define (codegen)
>  #`(let ((message "hello, world!\n"))
>      (display message)))
>
> (define-syntax test
>  (lambda (x)
>    (syntax-case x ()
>      (_ (codegen)))))
>
> (test)
>
> Then I opened guile and did (load "test.scm"), and got this:
>
> ;;; compiling test.scm
> ;;; WARNING: compilation of test.scm failed:
> ;;; key wrong-type-arg, throw_args (#f "Wrong type to apply: ~S" (#f) (#f))
> hello, world!
>
> As far as I can tell, this means that Guile tried to compile test.scm,
> failed, and then interpreted it correctly. Is that right? If so, is
> there a way to get more information about where the wrong-type-arg
> error was thrown?
>
> I'd also love to know any way to get more information about errors
> that happen during macroexpansion in general. I've been having quite a
> bit of trouble figuring out what is going wrong at different points in
> peg.scm, while I'm trying to convert it to syntax-case.
>
> Thanks,
> Noah
>