--- ../cache/racket-6.11/src/racket/gc2/newgc.c 2017-07-07 19:13:22.000000000 +0000 +++ ./src/racket/gc2/newgc.c 2018-01-05 05:55:28.900376813 +0000 @@ -10,6 +10,7 @@ #include <stdio.h> #include <string.h> #include <errno.h> +#include <strings.h> #include "platforms.h" #include "../src/schpriv.h" #include "gc2.h"