_longjmp
========

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

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: Solaris 2.5.1, mingw.

  * This function is obsolete; use siglongjmp instead.