commit c3c65bcdfe53aac4f1bd27f4bfb3faccabfa2fd3
Author: Érico Rolim <erico.erc@gmail.com>
Date:   Sun Aug 16 15:19:57 2020 -0300

    chkshsgr.c: use gid_t.

diff --git a/src/chkshsgr.c b/src/chkshsgr.c
index 38c352d..31eda67 100644
--- a/runit-2.1.2/src/chkshsgr.c
+++ b/runit-2.1.2/src/chkshsgr.c
@@ -1,10 +1,11 @@
 /* Public domain. */
 
+#include <sys/types.h>
 #include <unistd.h>
 
 int main()
 {
-  short x[4];
+  gid_t x[4];
 
   x[0] = x[1] = 0;
   if (getgroups(1,x) == 0) if (setgroups(1,x) == -1) _exit(1);