fgetpos
=======

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

Gnulib module: ---

Portability problems fixed by Gnulib:

  * 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:

  * fflush, ftell, ftello, fgetpos behave incorrectly on input streams that are opened in O_TEXT mode and whose contents contains Unix line terminators (LF), on some platforms: mingw, MSVC 14.

  * This function mistakenly succeeds on pipes on some platforms: mingw 10.