GNU bug report logs - #70142
[PATCH] Fix error messages containing format strings

Package: guile;

Reported by: Michael Käppler <xmichael-k <at> web.de>

Date: Tue, 2 Apr 2024 14:08:03 UTC

Severity: normal

Tags: patch

Done: Ludovic Courtès <ludo <at> gnu.org>

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Report forwarded to bug-guile <at> gnu.org:
bug#70142; Package guile. (Tue, 02 Apr 2024 14:08:03 GMT) Full text and rfc822 format available.

Acknowledgement sent to Michael Käppler <xmichael-k <at> web.de>:
New bug report received and forwarded. Copy sent to bug-guile <at> gnu.org. (Tue, 02 Apr 2024 14:08:04 GMT) Full text and rfc822 format available.

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

From: Michael Käppler <xmichael-k <at> web.de>
To: bug-guile <at> gnu.org
Subject: [PATCH] Fix error messages containing format strings
Date: Tue, 2 Apr 2024 09:52:34 +0200

[Message part 1 (text/plain, inline)]

Hi all,
I recently ran into the issue that some error messages in Guile are not
formatted properly.
As a simple reproducer, fire up a REPL and do

,option on-error 'foo

Which will yield

"While executing meta-command:
Bad on-error value ~a; expected one of ~a foo (debug backtrace report pass)"

The reason is that format strings occurring in the message are
escaped, see `module/ice-9/boot-9.scm`  and
`module/language/tree-il/primitives.scm`.

So a call of

`(error "Wrong argument: ~a" 42)`

is rendered as

"Wrong argument: ~a 42"
Some callers did not take this behavior into account.

Patch attached.

Michael

[0001-Fix-error-messages-containing-format-strings.patch (text/plain, attachment)]

Reply sent to Ludovic Courtès <ludo <at> gnu.org>:
You have taken responsibility. (Mon, 06 May 2024 09:44:02 GMT) Full text and rfc822 format available.

Notification sent to Michael Käppler <xmichael-k <at> web.de>:
bug acknowledged by developer. (Mon, 06 May 2024 09:44:02 GMT) Full text and rfc822 format available.

Message #10 received at 70142-done <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Michael Käppler <xmichael-k <at> web.de>
Cc: 70142-done <at> debbugs.gnu.org
Subject: Re: bug#70142: [PATCH] Fix error messages containing format strings
Date: Mon, 06 May 2024 11:42:34 +0200

Hi Michael,

Michael Käppler <xmichael-k <at> web.de> skribis:

> The reason is that format strings occurring in the message are
> escaped, see `module/ice-9/boot-9.scm`  and
> `module/language/tree-il/primitives.scm`.
>
> So a call of
>
> `(error "Wrong argument: ~a" 42)`
>
> is rendered as
>
> "Wrong argument: ~a 42"
> Some callers did not take this behavior into account.

Good catch, applied.  Thanks!

Ludo’.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Mon, 03 Jun 2024 11:24:15 GMT) Full text and rfc822 format available.

This bug report was last modified 1 year and 18 days ago.

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GNU bug report logs - #70142 [PATCH] Fix error messages containing format strings

GNU bug report logs - #70142
[PATCH] Fix error messages containing format strings