From 26de8c20c7ad0a30c2263b65424f72b45ad852e7 Mon Sep 17 00:00:00 2001
From: "Z. Liu" <zhixu.liu@gmail.com>
Date: Sat, 24 Aug 2024 23:25:03 +0800
Subject: fix compilation error(s): call to undeclared function for C99 and
 later

found by using clang 18 with CFLAGS: -Wall

error: call to undeclared function '...'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  chpst.c: setgroups
  pathexec_run.c: execve
  prot.c: setgroups, setgid, setuid
  seek_set.c: lseek
---
 src/chpst.c        | 1 +
 src/pathexec_run.c | 1 +
 src/prot.c         | 2 ++
 src/seek_set.c     | 1 +
 4 files changed, 5 insertions(+)

diff --git a/src/chpst.c b/src/chpst.c
index f279d44..2055aeb 100644
--- a/src/chpst.c
+++ b/src/chpst.c
@@ -3,6 +3,7 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <unistd.h>
+#include <grp.h>
 #include "sgetopt.h"
 #include "error.h"
 #include "strerr.h"
diff --git a/src/pathexec_run.c b/src/pathexec_run.c
index 1770ac7..70ac7a8 100644
--- a/src/pathexec_run.c
+++ b/src/pathexec_run.c
@@ -1,5 +1,6 @@
 /* Public domain. */
 
+#include <unistd.h>
 #include "error.h"
 #include "stralloc.h"
 #include "str.h"
diff --git a/src/prot.c b/src/prot.c
index 79a88c5..a617a53 100644
--- a/src/prot.c
+++ b/src/prot.c
@@ -1,5 +1,7 @@
 /* Public domain. */
 
+#include <unistd.h>
+#include <grp.h>
 #include "hasshsgr.h"
 #include "prot.h"
 
diff --git a/src/seek_set.c b/src/seek_set.c
index 19b8265..a1a36d0 100644
--- a/src/seek_set.c
+++ b/src/seek_set.c
@@ -1,6 +1,7 @@
 /* Public domain. */
 
 #include <sys/types.h>
+#include <unistd.h>
 #include "seek.h"
 
 #define SET 0 /* sigh */
-- 
cgit 1.4.1