fdopen
======

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/fdopen.html

Gnulib module: fdopen

Portability problems fixed by Gnulib:

  * This function crashes when invoked with invalid arguments on some platforms: MSVC 14.

  * On Windows platforms (excluding Cygwin), this function does not set errno upon failure.

Portability problems not fixed by Gnulib: