bug#58066: closed (pretty-print will make data modified by set-cdr! to random value)

[GNU bug Tracking System]

Your message dated Thu, 20 Jul 2023 00:17:10 +0200
with message-id <609596e5ad9cb6b9726d9fe176d12ac07d0b9f26.camel@abou-samra.fr>
and subject line Re: bug#58066: pretty-print will make data modified by 
set-cdr! to random value
has caused the debbugs.gnu.org bug report #58066,
regarding pretty-print will make data modified by set-cdr! to random value
to be marked as done.

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58066: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=58066
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> --- Begin Message ---
>
>
>
> Subject: 
>
> pretty-print will make data modified by set-cdr! to random value
>
>
>
>
> Date: 
>
> Sat, 24 Sep 2022 06:01:13 -0400
>
>
>
>
> GNU Guile 3.0.8
>
> Using `guile3 < file.scm` to run the code below will makes the result
> of tp unpredictable (pointing to very random things)
>
> (use-modules (ice-9 pretty-print))
> (define tl '(1 2))
> (define tp (cdr tl))
> (set-cdr! tp (cons 3 '()))
>   (pretty-print tl)
>   (pretty-print tp)
> ---
>
> However, if i use plain old (display tp), the code will out put
> expected valve (1 2 3) (3)
> (define tl '(1 2))
> (define tp (cdr tl))
> (set-cdr! tp (cons 3 '()))
>   (display tl) (newline)
>   (display tp) (newline)
>
> ---
>
> Context:
>
> I am using guile3's repl and whenever i access a variable's by typing
> its name after (set-cdr!), the result will goes wild.
>
>
>
> --- End Message ---

--- Begin Message --- Subject: Re: bug#58066: pretty-print will make data modified by set-cdr! to random value Date: Thu, 20 Jul 2023 00:17:10 +0200 User-agent: Evolution 3.48.4 (3.48.4-1.fc38)

Closing this as a duplicate of https://debbugs.gnu.org/cgi/bugreport.cgi?bug=16060

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