$OpenBSD: patch-support_mph_h,v 1.1.1.1 2008/10/15 13:34:10 robert Exp $
--- support/mph.h.orig	Tue Oct  7 17:12:09 2008
+++ support/mph.h	Tue Oct  7 17:12:13 2008
@@ -131,7 +131,7 @@ typedef gint64 suseconds_t;
 
 #define _mph_return_val_if_cb_(val, ret, cb) G_STMT_START{ \
 	if (cb (val)) { \
-		errno = EOVERFLOW; \
+		errno = EINVAL; \
 		return ret; \
 	}}G_STMT_END