In debug mode, force afl map entry

src/libzafl.c

@@ -100,7 +100,7 @@ void zafl_initAflForkServer()
 
 	zafl_setupSharedMemory();
 	if (debug)
-		printf("libzafl: map is at 0x%p\n", zafl_trace_map);
+		printf("libzafl: map is at %p\n", zafl_trace_map);
 
 	if (!zafl_trace_map) {
 		zafl_trace_map = (u8*)malloc(MAP_SIZE);
@@ -115,6 +115,10 @@ void zafl_initAflForkServer()
 		return;
 	}
 
+	// force map entry to get past afl sanity checks
+	if (debug)
+		zafl_trace_map[MAP_SIZE-1] = 1;
+
 	fork_server_initialized = 1;
 
 	// afl forkserver handshake