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@node ftell
@section @code{ftell}
@findex ftell
POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/ftell.html}
Gnulib module: ftell
Portability problems fixed by Gnulib:
@itemize
@item
This function mistakenly succeeds on pipes on some platforms: mingw.
@item
This function produces incorrect results immediately after @code{fseek} on some
platforms:
HP-UX 11.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
@code{fflush}, @code{ftell}, @code{ftello}, @code{fgetpos} behave incorrectly
on input streams that are opened in @code{O_TEXT} mode and whose contents
contains Unix line terminators (LF), on some platforms: mingw.
@item
On platforms where @code{long} is a 32-bit type, @code{ftell} does not work
correctly with files larger than 2 GB. The fix is to use @code{ftello}
instead and to invoke the @code{AC_SYS_LARGEFILE} macro.
@end itemize
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