Re: [PATCH] wrapper: remove xunsetenv()

> However, according to the unsetenv() manpage:
>
>   Prior to glibc 2.2.2, unsetenv() was prototyped as returning void;
>   more recent glibc versions follow the POSIX.1-compliant prototype
>   shown in the SYNOPSIS.
>
> So it is POSIX to return an int, but that gives us at least one platform
> where unsetenv() returns void (or used to). glibc 2.2.2 is 2001-era, so
> that may be old enough that we don't care. But it makes me wonder if
> other older or obscure platforms will run into this.