ftruncate
=========

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

Gnulib module: ftruncate

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: MSVC 14.

  * On platforms where off_t is a 32-bit type, this function may not work correctly on files 2 GiB and larger.  See Large File Support.

Portability problems not fixed by Gnulib: