+@item
+The macros @code{EOWNERDEAD}, @code{ENOTRECOVERABLE} are not defined on
+some platforms:
+glibc/Linux 2.3.6, glibc/Hurd 2.15, glibc/kFreeBSD 2.15,
+MacOS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Cygwin, mingw without pthreads-win32, MSVC 9, Interix 3.5, BeOS.