| @node tzset |
| @section @code{tzset} |
| @findex tzset |
| |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/tzset.html} |
| |
| Gnulib module: tzset |
| |
| Portability problems fixed by Gnulib: |
| @itemize |
| @item |
| On native Windows platforms (mingw, MSVC), this function works incorrectly |
| when the environment variable @code{TZ} has been set by Cygwin. |
| @end itemize |
| |
| Portability problems not fixed by Gnulib: |
| @itemize |
| @item |
| Native Windows platforms (mingw, MSVC) support only a subset of |
| POSIX-specified values for the @env{TZ} environment variable, |
| consisting of a time zone abbreviation containing exactly three ASCII |
| letters with no daylight saving time or angle brackets, and with no |
| support for @code{tz} database settings like |
| @code{TZ='America/New_York'}. Even this subset does not work on |
| applications built via the Universal Windows Platform, as it does not |
| make environment variables like @env{TZ} available to applications. |
| @item |
| Older POSIX platforms do not support angle brackets in @env{TZ} values, |
| as this feature was added in IEEE Std 1003.1-2001. |
| @end itemize |
