@node mkstemp @section @code{mkstemp} @findex mkstemp POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkstemp.html} Gnulib module: mkstemp Portability problems fixed by Gnulib: @itemize @item This function is missing on some platforms: mingw, MSVC 14. @item On platforms where @code{off_t} is a 32-bit type, @code{mkstemp} may not work correctly to create files 2 GiB and larger. @xref{Large File Support}. @item On some older platforms, @code{mkstemp} can create a world or group writable or readable file, if you haven't set the process umask to 077. This is a security risk. @end itemize Portability problems not fixed by Gnulib: @itemize @end itemize The gnulib module @code{clean-temp} can create temporary files that will not be left behind after signals such as SIGINT.