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bug#58066: pretty-print will make data modified by set-cdr! to random va
From: |
slbtty |
Subject: |
bug#58066: 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.
- bug#58066: pretty-print will make data modified by set-cdr! to random value,
slbtty <=