2 @section @code{gmtime_r}
5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime_r.html}
9 Portability problems fixed by Gnulib:
12 This function is missing on some platforms:
15 This function is not declared unless @code{_REENTRANT} is defined,
20 Portability problems not fixed by Gnulib: