More C type errors by default for GCC 14

[Eli Zaretskii]

> Date: Wed, 10 May 2023 16:31:23 +0200
> From: Thomas Koenig via Gcc <gcc@gcc.gnu.org>
> 
> On 10.05.23 14:03, Jakub Jelinek via Gcc wrote:
> > We do such changes several times a year, where we reject something that has
> > been previously accepted in older standards, admittedly mostly in C++.
> 
> ... and in Fortran.

Tell me about it.  Just a couple of months ago I needed to compile the
venerable Adventure game from 1977 sources (for my grandson).  That
was no fun, although there was, of course, nothing wrong with the
source code, and once I tweaked gfortran into accepting that flavor of
Fortran, it compiled and ran just fine.