*** src/test/test.h.orig	2020-08-27 18:47:10.782379958 -0300
--- src/test/test.h	2020-08-27 18:47:16.518388700 -0300
***************
*** 23,28 ****
--- 23,29 ----
  #include <iostream>
  #include <string.h>
  #include <stdio.h>
+ #include <unistd.h>
  
  using namespace std;