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9.341 fseeko

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

Gnulib module: fseeko

Portability problems fixed by Gnulib:

• This function is missing on some platforms: mingw, MSVC 14.
• The declaration of fseeko in <stdio.h> is not enabled by default on some platforms: glibc 2.3.6.
• 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: