The diff below just replaces rand() with arc4random.
Jan
Index: Makefile
===================================================================
RCS file: /cvs/ports/sysutils/memtester/Makefile,v
retrieving revision 1.10
diff -u -p -u -p -r1.10 Makefile
--- Makefile 11 Oct 2013 23:50:57 -0000 1.10
+++ Makefile 16 Feb 2015 08:57:47 -0000
@@ -3,7 +3,7 @@
COMMENT= utility to test for memory faults
DISTNAME= memtester-4.1.3
-REVISION= 0
+REVISION= 1
CATEGORIES= sysutils
HOMEPAGE= http://pyropus.ca/software/memtester/
Index: patches/patch-sizes_h
===================================================================
RCS file: patches/patch-sizes_h
diff -N patches/patch-sizes_h
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-sizes_h 16 Feb 2015 08:57:47 -0000
@@ -0,0 +1,12 @@
+$OpenBSD$
+--- sizes.h.orig Mon Feb 16 09:52:13 2015
++++ sizes.h Mon Feb 16 09:52:29 2015
+@@ -14,7 +14,7 @@
+
+ #include <limits.h>
+
+-#define rand32() ((unsigned int) rand() | ( (unsigned int) rand() << 16))
++#define rand32() arc4random()
+
+ #if (ULONG_MAX == 4294967295UL)
+ #define rand_ul() rand32()
