+@code{ENOTSUP} are not defined on some platforms:
+OpenBSD 4.0, mingw, MSVC 9.
+@item
+The macro @code{ESTALE} is not defined on some platforms:
+mingw, MSVC 9, Interix 3.5.
+@item
+The macro @code{EDQUOT} is not defined on some platforms:
+NonStop Kernel, mingw, MSVC 9.
+@item
+The macros @code{ENETRESET}, @code{ECONNABORTED} are not defined on some
+platforms:
+Minix 3.1.8, mingw, MSVC 9.