Bug: https://bugs.gentoo.org/894336
--- a/pipebench.c
+++ b/pipebench.c
@@ -28,6 +28,8 @@
  */
 #include <stdio.h>
 #include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
 #include <time.h>
 #include <signal.h>
 #include <sys/time.h>