ftello
======

POSIX specification:
 http://www.opengroup.org/onlinepubs/9699919799/functions/ftello.html

Gnulib module: ftello

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: IRIX 5.3, OSF/1 4.0, Solaris 2.5.1, mingw.

  * The declaration of ftello in <stdio.h> is not enabled by default on some platforms: glibc 2.3.6.

  * This function produces incorrect results after putc that followed a getc call that reached EOF on some platforms: Solaris 11 2010-11.

  * This function fails on seekable stdin, stdout, and stderr: cygwin <= 1.5.24.

Portability problems not fixed by Gnulib:

  * On platforms where off_t is a 32-bit type, ftello does not work correctly with files larger than 2 GB.  The fix is to use the AC_SYS_LARGEFILE macro.

  * This function produces incorrect results immediately after fseek on some platforms: HP-UX 11.

  * 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.

  * On platforms where off_t is a 64-bit type, but fseeko is not present, stream operations on files larger than 2 GB silently do the wrong thing.  This affects BSD/OS, which is mostly obsolete.