Re: stdbool module unconditionally #define true

[Paul Eggert]

On 2022-10-14 14:08, Simon Josefsson via Gnulib discussion list wrote:
> Shouldn't the following cause a compilation error?
>
> $ podman run -it gcc:latest
> root@18544d251872:/# cat>foo.c
> int main (void) {
> int true = 42;
> return true;
> }

Yes if you have a C23 compiler, which GCC 12 isn't. To get a proper 
compilation error you will have to wait for a future GCC release, unless 
you are using bleeding-edge GCC. Support for the keywords bool, true and 
false was added in GCC commit 0a91bdaf177409a2a5e7895bce4f0e7091b4b3ca 
dated 2022-09-07.

That GCC commit also added support for the C23 keywords alignas, 
alignof, static_assert, and thread_local, where you may see similar issues.