bug#80267: CC Mode 5.35.2 (C/*l); C mode comment in signature indentation regression

[Alan M. <ac...@mu...>]

Hello, Arsen.

Thanks for the bug report!

On Mon, Jan 26, 2026 at 17:07:17 +0100, Arsen Arsenović via CC-Mode-help wrote:
> Package: cc-mode

> <#secure method=pgpmime mode=sign>
> Package: cc-mode

> In a c-mode buffer, insert the following:

>   int foo(int a,
>   /* foo */
>   int b);

> ... then, reindent the whole buffer (M-h <TAB>).

> In Emacs 29, this indented, correctly, as:

>   int foo(int a,
>           /* foo */
>           int b);

> ... and in Emacs 31, this indents as:

>   int foo(int a,
>   /* foo */
>           int b);

> Not sure how long this has been happening, but it's probably a few
> weeks, since my dev build (which is behind, at
> 3945654f05629c620b2b404a289a969d501ee285) is seeing the same.

I'll have a look at this, yes.  It might be one of these bugs which on
being solved, opens up a problem elsewhere.  I hope not!

Ulrich Müller has pinpointed the patch which introduced the bug.
Thanks, Ulrich!

> TIA, have a lovely day, and happy new year!  :-)

[ .... ]

> -- 
> Arsen Arsenović

-- 
Alan Mackenzie (Nuremberg, Germany).