bug#69645: 27.2; Fails to build today

[Eli Zaretskii <eliz@gnu.org>]

> Date: Fri,  8 Mar 2024 15:34:40 +0000
> From: John ff <jpff@codemist.co.uk>
> 
> 
> Attempting to build master after a "git pull"
> I get
> make -C ../lwlib/ liblw.a
> make[3]: Entering directory '/home/jpff/GNU/emacs/lwlib'
> make[3]: 'liblw.a' is up to date.
> make[3]: Leaving directory '/home/jpff/GNU/emacs/lwlib'
>   CC       eval.o
> eval.c:1722:1: warning: data definition has no type or storage class
>  q
>  ^
> eval.c:1722:1: warning: type defaults to ‘int’ in declaration of ‘q’ [-Wimplicit-int]
> In file included from eval.c:25:0:
> lisp.h:3438:3: error: expected ‘,’ or ‘;’ before ‘static’
>    static union Aligned_Lisp_Subr sname =                            \
>    ^
> eval.c:1723:1: note: in expansion of macro ‘DEFUN’
>  DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0,
>  ^~~~~
> eval.c: In function ‘syms_of_eval’:
> eval.c:4449:13: error: ‘Ssignal’ undeclared (first use in this function); did you mean ‘xsignal’?
>    defsubr (&Ssignal);
>              ^~~~~~~
>              xsignal
> eval.c:4449:13: note: each undeclared identifier is reported only once for each function it appears in

I cannot reproduce this.  Are you sure your source tree is clean and
that you are up-to-date with the upstream repository?