On 02.03.23 03:46, Tom Lane wrote:
> Peter Smith <smithpb2250@gmail.com> writes:
>> Apparently, not all C99 compilers can be assumed to work using the
>> strict C99 rules.
>
> While googling this issue I came across a statement that clang currently
> defaults to C17 rules. Even relatively old compilers might default to
> C11. But considering how long we held on to C89, I doubt we'll want
> to move the project minimum to C11 for some years yet.
We need to wait until we de-support Visual Studio older then 2019.
(Current minimum is 2015 (changed from 2013 for PG16).)