Re: Mutt compilation using Clang 22

Alejandro Colomar via Mutt-dev <[email protected]> Wed, 3 Jun 2026 15:35:09 +0200

Newsgroups	gmane.mail.mutt.devel
Message-ID	<aiAtXaRgcM9HGhN5@devuan>

Hi Vincent,

On 2026-06-03T15:08:08+0200, Vincent Lefevre wrote:
> On 2026-06-03 13:16:51 +0200, Fabian Groffen via Mutt-dev wrote:
> > I just want to point your attention tp https://bugs.gentoo.org/971955.
> > 
> > Perhaps for 2.4.0 or 2.5.0 this could be fixed, as it seems there's
> > old-style in the codebase that Clang22 does not want to accept any more.
> > 
> > Copy of excerpt from the bug:
> > 
> > clang -std=gnu23 -DPKGDATADIR=\"/usr/share/mutt\" -DSYSCONFDIR=\"/etc/mutt\" -DBINDIR=\"/usr/bin\" -DMUTTLOCALEDIR=\"/usr/share/locale\" -DHAVE_CONFIG_H=1 -DPREFIX=\"/usr/..\" -I.  -I. -I. -I./imap      -Wall -pedantic -Wno-long-long -O2 -c -o regex.o regex.c
> 
> This is regex.c, which is enabled only when "your system's regexp
> library is completely broken" (configure.ac). But... the cause may
> be that the configure test uses
> 
>   int main()
> 
> rather than
> 
>   int main(void)

So, using main(void) would fix this?  That would be easy to do, and
would be good anyway.


Have a lovely day!
Alex

> 
> However, -Werror or similar is not used, so that even if "main()"
> generates a warning, this should not make the test fail. So perhaps
> Gentoo should fix their regexp library.
> 
> Note: modifying regex.c has the risk to introduce issues on old systems
> where it is really needed.
> 
> -- 
> Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/>
> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
> Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)

-- 
<https://www.alejandro-colomar.es>

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