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

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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>

Bug is archived. No further changes may be made.

Full log

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

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