9.305 fseeko

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

Gnulib module: fseeko

Portability problems fixed by Gnulib:

• This function is missing on some platforms: IRIX 5.3, OSF/1 4.0, Solaris 2.5.1, mingw, MSVC 14.
• The declaration of fseeko in <stdio.h> is not enabled by default on some platforms: glibc 2.3.6, OSF/1 5.1.
• This function fails on seekable stdin, stdout, and stderr: cygwin <= 1.5.24.
• On platforms where off_t is a 32-bit type, fseeko does not work correctly with files larger than 2 GB. (Cf. AC_SYS_LARGEFILE.)

Portability problems not fixed by Gnulib:

• 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.