diff --git a/code/leak.c b/code/leak.c
index c41cae5cf..0cbd4bb7e 100644
--- a/code/leak.c
+++ b/code/leak.c
@@ -48,9 +48,19 @@ main(void)
 	printf("main: spray to reduce TLB noise part 1: %u objects\n",
 	    PIPE_BUFFER);
 	for (size_t i = 0; i < SPRAY; i++) {
-		pipe2(pipes[i], O_NONBLOCK);
-		fcntl(pipes[i][0], F_SETPIPE_SZ, 2 << 12);
-		write(pipes[i][1], buffer, 8);
+		int ret;
+		ret = pipe2(pipes[i], O_NONBLOCK);
+		if (ret < 0) {
+			printf("main: error: pipe2: object %lu\n", i);
+		}
+		ret = fcntl(pipes[i][0], F_SETPIPE_SZ, 2 << 12);
+		if (ret < 0) {
+			printf("main: error: fcntl: object %lu\n", i);
+		}
+		ret = write(pipes[i][1], buffer, 8);
+		if (ret < 0) {
+			printf("main: error: write: object %lu\n", i);
+		}
 	}
 
 	// May need socket and two parts instead