From: Andy Wingo <wingo@igalia.com>
To: Stefan Israelsson Tampe <stefan.itampe@gmail.com>
Cc: 39811-close@debbugs.gnu.org
Subject: bug#39811: Missing dynwind exit application
Date: Tue, 03 Mar 2020 21:33:47 +0100 [thread overview]
Message-ID: <87r1y918lw.fsf@igalia.com> (raw)
In-Reply-To: <CAGua6m2ez-P3Bic=2kBgNf-QzYAiGbA0Zkms9A5XE-VaOEbQ1Q@mail.gmail.com> (Stefan Israelsson Tampe's message of "Thu, 27 Feb 2020 19:59:25 +0100")
Stefan Israelsson Tampe <stefan.itampe@gmail.com> writes:
> Executing this code on guile-3.0.0:
>
> (dynamic-wind
> (lambda () (pk 'enter))
> (lambda () (catch #t
> (lambda () (throw 1))
> (lambda x (pk 'catch x) (apply throw x))))
> (lambda () (pk 'leave)))
>
> Leads to the output:
>
> scheme@(guile-user)> (load "bug.scm")
> ;;; (enter)
> ;;; (catch (a))
>
> ice-9/boot-9.scm:1669:16: In procedure raise-exception:
> Throw to key `a' with args `()'.
>
> What, it does not execute the leave part of the dynamic wind.
That is because the REPL leaves you in the context of where the uncaught
error was thrown. If you ,quit the REPL to go back to the outer REPL,
it will print "leave" as expected. Please reopen if I have
misunderstood :)
Cheers,
Andy
prev parent reply other threads:[~2020-03-03 20:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 18:59 bug#39811: Missing dynwind exit application Stefan Israelsson Tampe
2020-03-03 20:33 ` Andy Wingo [this message]
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