if ( (len >= 0 && len <= size)
// No EOVERFLOW on Windows nor Palm 6.0 nor OpenVMS nor MacOS (not X)
// not OS/2 (not Innotek libc).
-#if !defined(__WXMSW__) && !defined(__WXPALMOS__) && !defined( __VMS ) && !(defined(__WXMAC__) && !defined(__WXMAC_OSX__)) && !(defined(__EMX__) && !defined(__INNOTEK_LIBC__))
+#if !defined(__WXMSW__) && \
+ !defined(__WXPALMOS__) && \
+ !defined(__OpenBSD__) && \
+ !defined(__DJGPP__) && \
+ !defined( __VMS ) && \
+ !(defined(__WXMAC__) && !defined(__WXMAC_OSX__)) && \
+ !(defined(__EMX__) && !defined(__INNOTEK_LIBC__))
|| errno != EOVERFLOW
#endif
)