@node mktime @section @code{mktime} @findex mktime POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/mktime.html} Gnulib module: mktime 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. @item @code{mktime} may go into an endless loop on some platforms. @item @code{mktime} may occasionally return wrong results on some platforms. @end itemize Portability problems not fixed by Gnulib: @itemize @item Native Windows platforms (mingw, MSVC) support only a subset of time zones supported by GNU or specified by POSIX. @xref{tzset}. @end itemize