@section @code{truncate}
@findex truncate
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/truncate.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/truncate.html}
Gnulib module: ---
@itemize
@item
This function is missing on some platforms:
-mingw.
+mingw, MSVC 9.
+@item
+On platforms where @code{off_t} is a 32-bit type, this function is not
+applicable to arbitrary lengths for files larger than 2 GB. The fix is to
+use the @code{AC_SYS_LARGEFILE} macro.
@end itemize