$NetBSD: patch-be,v 1.5 2014/11/30 08:40:51 spz Exp $

--- support/sys-mman.c.orig	2014-09-22 13:23:09.000000000 +0000
+++ support/sys-mman.c
@@ -10,7 +10,6 @@
 #include <config.h>
 
 #ifndef __OpenBSD__
-#define _XOPEN_SOURCE 600
 #endif
 
 #ifdef PLATFORM_MACOSX
@@ -25,6 +24,9 @@
 #include <sys/types.h>
 #include <sys/mman.h>
 #include <errno.h>
+#ifdef __sun
+#include <unistd.h>
+#endif
 
 #include "map.h"
 #include "mph.h"
@@ -109,8 +111,13 @@ Mono_Posix_Syscall_mremap (void *old_add
 	if (Mono_Posix_FromMremapFlags (flags, &_flags) == -1)
 		return MAP_FAILED;
 
+#if defined(__NetBSD__)
+	return mremap (old_address, (size_t) old_size, old_address, (size_t) new_size,
+			(unsigned long) _flags);
+#else
 	return mremap (old_address, (size_t) old_size, (size_t) new_size,
 			(unsigned long) _flags);
+#endif
 }
 #endif /* def HAVE_MREMAP */