9.1101 tzset

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/tzset.html

Gnulib module: tzset

Portability problems fixed by Gnulib:

• This function clobbers the buffer used by the localtime function on some platforms: Solaris 2.6.

Portability problems not fixed by Gnulib: