Hi,
i have the following two files, one that only requires the other and
calls a macro and the other one that defines that macro:
=== main.rkt
#lang racket
(require "err.rkt")
(a)
=== err.rkt
#lang racket
(begin-for-syntax
(struct s (arg) #:transparent)
(define (fun arg)
(printf "arg: ~a\n" arg)))
(define-syntax (a stx)
(syntax-case stx ()
[(_)
(with-syntax ([v #`#,(s 123)])
#'(begin
(begin-for-syntax
(fun v))))]))
(provide a)
When executing 'racket main.rkt' directly i get the expected output
arg: #(struct:s 123)
but when i try to call 'raco make main.rkt' instead, i get this strange
error:
arg: #(struct:s 123)
write: cannot marshal value that is embedded in compiled code
value: (s 123)
context...:
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:388:6
/home_local/hamm_to/racket/racket-5.3.0.16/collects/racket/private/more-scheme.rkt:151:2:
call-with-break-parameterization
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:188:5
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:508:26
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:501:42
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:466:0:
maybe-compile-zo
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:579:2:
do-check
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/cm.rkt:653:4
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/commands/make.rkt:77:8:
for-loop
/home_local/hamm_to/racket/racket-5.3.0.16/collects/compiler/commands/make.rkt:
[running body]
/home_local/hamm_to/racket/racket-5.3.0.16/collects/raco/raco.rkt:
[running body]
/home_local/hamm_to/racket/racket-5.3.0.16/collects/raco/main.rkt:
[running body]
I think i need a little help to understand what is happening here
and what i am doing wrong. I had expected that running and compiling
works on the same set of programs.
Thanks for any clarification.
Tobias
--
---------------------------------------------------------
Tobias Hammer
DLR / Institute of Robotics and Mechatronics
Tel.: 08153/28-1487
Mail: tobias.ham...@dlr.de
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