5 POSIX specification: @url{http://www.opengroup.org/susv3xsh/lseek.html}
9 Portability problems fixed by Gnulib:
12 This function mistakenly succeeds on pipes on some platforms: mingw.
15 Portability problems not fixed by Gnulib:
18 POSIX does not specify which file descriptors support seeking and which don't.
19 In practice, regular files and block devices support seeking, and ttys, pipes,
20 and most character devices don't support it.
22 On platforms where @code{off_t} is a 32-bit type, @code{lseek} does not work
23 correctly with files larger than 2 GB. The fix is to use the
24 @code{AC_SYS_LARGEFILE} macro.