On 28 June 2012 03:31, Arseny Vakhrushev <arseny.vakhrushev@gmail.com> wrote: > The best way would be to use localtime_r() instead of localtime(). The manual states it is sufficient to check for _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _BSD_SOURCE || _SVID_SOURCE || _POSIX_SOURCE. lua 5.2 does. http://www.lua.org/source/5.2/loslib.c.html#l_localtime