--- MBlock.c.ori	2003-09-18 09:42:10.000000000 +0200
+++ MBlock.c	2003-09-18 09:42:44.000000000 +0200
@@ -97,6 +97,12 @@
 	ret = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
 	close(fd);
     }
+#elif irix_TARGET_OS
+    { 
+	int fd = open("/dev/zero",O_RDONLY);
+	ret = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+	close(fd);
+    }
 #elif hpux_TARGET_OS
     ret = mmap(addr, size, PROT_READ | PROT_WRITE, 
 	       MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);