johnwcowan/cpscm

Automatically exported from code.google.com/p/cpscm

cpscm's Issues

bug?

hi

this might be a bug:

echo "(cadr '(define (f x)) )" > t.sc
echo '(scm2scm:compile "t.sc" "tt.sc")' | sisc scm2scm.scm

SISC (1.16.6)
#;> Error: (no expressions in body ())
---------------------------
To enable more detailed stack tracing, set the dynamic parameter
max-stack-trace-depth to a non-zero value, e.g. 16.
---------------------------
Some stack trace entries may have been suppressed. To see all entries set
the dynamic parameter suppressed-stack-trace-source-kinds to '().
#;> 

Original issue reported on code.google.com by [email protected] on 27 Aug 2008 at 1:30

Expression simplification error

I use chicken. This bug should be replicable using SISC in the same way.
Run chicken in the <checkout-root>/cpscm-read-only/scm directory as follows:
$ csi danm/chicken-prelude.scm cpscm.scm

At the REPL try:
#;1> (define exp '(lambda (foo) ((lambda (bar) (if (= bar 0) 0 (+ foo
foo))) foo)))
#;2> (simplify-sexp exp)
=> (lambda (bar) (if (= bar 0) 0 (+ foo foo)))

Because the second lambda in exp is a closure which captures the binding to
foo, the expression cannot be simplified and the expected output is exp
unchanged.

The problem may be that the computation? routine returns false for lambda
and define expressions. The attached patch fixes the problem for all the
cases I tried. I have not fully grokked the simplification code, however,
so this is a quick fix that almost certainly prevents other valid
simplifications.

This bug affects all the output backends for cpscm. I have actual practical
scheme code that will not properly compile with cpscheme before the
application of the patch.

Original issue reported on code.google.com by [email protected] on 14 Aug 2008 at 8:12

Attachments:

• cpscm.patch

what I did wrong?

Hi

I've got cpscm compiled without problem, 
but the first sample code I tried gives this error:

echo '(define list-index (lambda (pred lst)
  (call/cc (lambda (return)
    (for-each (lambda (i x)
                (if (pred x) (return i))
              ) (idx-interval lst) lst)
  #f))))' > t.sc
echo '(import scm2scm)(scm2scm:compile "t.sc" "tt.sc")' |
 csi -q danm/chicken-prelude.scm cpscm.scm

; visiting scm2scm.scm ...
Error: unbound variable: 14598332513316644$$scm2scm:compile

NOTE: (import scm2scm) was evaluated OK

what I did wrong?

Thanks

Original issue reported on code.google.com by [email protected] on 26 Aug 2008 at 4:30