Fix all compiler warnings for tests

test/client/main.c

@@ -5,10 +5,11 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 #include <spawn.h>
+#include <unistd.h>
 
 int main(int argc, const char *argv[]) {
-	const int BUF_SIZE = 0x1000;
 	const char* message = "Hello world!";
 	int ret;
 

test/pipe/main.c

@@ -29,7 +29,7 @@ int main(int argc, const char* argv[]) {
     const char* child_argv[3] = { child_prog, msg, NULL };
     int child_pid;
     if (posix_spawn(&child_pid, child_prog, &file_actions,
-            NULL, child_argv, NULL) < 0) {
+            NULL, (char*const *)child_argv, NULL) < 0) {
         printf("ERROR: failed to spawn a child process\n");
         return -1;
     }

test/server/main.c

@@ -6,6 +6,7 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <spawn.h>
+#include <unistd.h>
 
 int main(int argc, const char *argv[]) {
 	const int BUF_SIZE = 0x1000;

test/server_epoll/main.c

@@ -9,6 +9,7 @@
 #include <fcntl.h>
 #include <sys/epoll.h>
 #include <errno.h>
+#include <spawn.h>
 
 #define MAXEVENTS 64
 

test/unix_socket/main.c

@@ -7,6 +7,7 @@
 #include <stdio.h>
 #include <spawn.h>
 #include <string.h>
+#include <spawn.h>
 
 const char SOCK_PATH[] = "echo_socket";
 
@@ -86,7 +87,7 @@ int main(int argc, const char* argv[]) {
     const char* child_argv[3] = { child_prog, msg, NULL };
     int child_pid;
     if (posix_spawn(&child_pid, child_prog, &file_actions,
-            NULL, child_argv, NULL) < 0) {
+            NULL, (char*const*)child_argv, NULL) < 0) {
         printf("ERROR: failed to spawn a child process\n");
         return -1;
     }