@item
This function is missing on some platforms:
HP-UX 10, mingw, BeOS.
+@item
+This function does not fail when an invalid (negative) offset is passed when
+large file support is enabled on some platforms:
+HP-UX 11.11.
+@item
+This function uses an arbitrary offset instead of the @code{off_t} argument
+when large file support is enabled on some platforms:
+HP-UX 11.11.
@end itemize
Portability problems not fixed by Gnulib: