@itemize
@item
This function is missing on some platforms:
-mingw, BeOS.
+mingw, MSVC 9, BeOS.
+@item
+On platforms where @code{rlim_t} is a 32-bit type, this function does not
+allow to retrieve limits larger than 4 GB, such as for RLIMIT_FSIZE. The
+fix is to use the @code{AC_SYS_LARGEFILE} macro.
@end itemize