realloc
=======

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

Gnulib module: realloc-posix

Portability problems fixed by Gnulib:

  * Upon failure, the function does not set errno to ENOMEM on some platforms: mingw.

Portability problems not fixed by Gnulib:

Extension: Gnulib provides a module realloc that substitutes a realloc implementation that behaves more like the glibc implementation.