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Re: How can I enable tracing in a script?
From: |
Neil Jerram |
Subject: |
Re: How can I enable tracing in a script? |
Date: |
Wed, 09 Jun 2004 21:23:53 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040413 Debian/1.6-5 |
Eric Hanchrow wrote:
(recent CVS guile)
When I run the following script, I want to see something like
[something 3]
| [something 2]
| | [something 1]
| | | [something 0]
| | | 0
| | 1
| 3
6
You're missing `with-traps'; see the attached script and output, which I
produced with 1.6.4.
Neil
#!/usr/bin/guile \
--debug -e main -s
!#
(use-modules (ice-9 debug))
(debug-enable 'trace)
(trace-stack #t)
;;(debug-enable 'backtrace)
;;(format #t "~s~%" (debug-options))
;;(format #t "~s~%" (traps))
;;(format #t "~s~%" (evaluator-traps-interface))
;;(format #t "~s~%" (list (@@(ice-9 debug)
;; trace-exit)
;; (@@(ice-9 debug) trace-entry)))
;;(evaluator-traps-interface `( exit-frame-handler ,(@@(ice-9 debug) trace-exit
)))
;;(evaluator-traps-interface `(apply-frame-handler ,(@@(ice-9 debug)
trace-entry)))
;;(format #t "~s~%" (evaluator-traps-interface))
;;
;;(format (current-error-port) "This message appears on the current error
port.~%")
;;(format #t "traced-stack-ids: ~s~%" (@@(ice-9 debug) traced-stack-ids))
;;(format #t "trace-all-stacks? ~s~%" (@@(ice-9 debug) trace-all-stacks?))
(define (something arg)
(if (not (positive? arg))
0
(+ arg (something (- arg 1)))))
(define (main . args)
;; (trace something)
(something (string->number (list-ref (car args) 1))))
(trace something)
(with-traps
(lambda ()
(something 9)))
[something 9]
| [something 8]
| | [something 7]
| | | [something 6]
| | | | [something 5]
| | | | | [something 4]
| | | | | | [something 3]
| | | | | | | [something 2]
| | | | | | | | [something 1]
| | | | | | | | | [something 0]
| | | | | | | | | 0
| | | | | | | | 1
| | | | | | | 3
| | | | | | 6
| | | | | 10
| | | | 15
| | | 21
| | 28
| 36
45
Backtrace:
In unknown file:
?: 0* (begin (load "./tr.scm") (main (command-line)) (quit))
?: 1* [main ("./tr.scm")]
In ./tr.scm:
30: 2 [something ...
30: 3* [string->number ...
30: 4* [list-ref ("./tr.scm") 1]
./tr.scm:30:30: In procedure list-ref in expression (list-ref (car args) 1):
./tr.scm:30:30: Argument 2 out of range: 1
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