GNU bug report logs - #26027
(system vm trace) creates no output

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Mike Gran <spk121 <at> yahoo.com>
To: Bug Guile <bug-guile <at> gnu.org>
Subject: (system vm trace) creates no output
Date: Wed, 8 Mar 2017 17:01:58 +0000 (UTC)

Hi-
I created the following file, which I ran under guile-2.0 and master.
There is no tracing output. What am I misunderstanding?
(use-modules 
(system vm trace)) 

(define (write-hi) 
(write "hi")) 

(define (outer) 
(write-hi)) 

(trace-calls-to-procedure write-hi) 
(trace-calls-in-procedure write-hi) 
(trace-instructions-in-procedure write-hi) 
(outer) 

Thanks,
Mike Gran

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