mprotect
========

POSIX specification: http://www.opengroup.org/susv3xsh/mprotect.html

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: mingw, BeOS.

  * This function does not set errno on some platforms: mingw.

  * On AIX, it is not possible to use mprotect on memory regions allocated with malloc.