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)
I am not sure about the set-cdr! and quote usage. However, i runned the same code in other schemes, mit, chicken, racket/r6rs, gambit, and they all yield tl as (1 2 3). (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.
