zdtm: remove warnings

test/zdtm/lib/Makefile

-CFLAGS	= -g -O2 -Wall
+CFLAGS	= -g -O2 -Wall -Werror
 
 LIB	= libzdtmtst.a
 

test/zdtm/lib/msg.c

@@ -27,7 +27,7 @@ void test_msg(const char *format, ...)
 	va_end(arg);
 
 	if (len >= msg_buf.left) {	/* indicate message buffer overflow */
-		const static char overflow_mark[] = "\n.@.\n";
+		const char overflow_mark[] = "\n.@.\n";
 		msg_buf.left = 0;
 		msg_buf.ptr = msg_buf.buffer + sizeof(msg_buf.buffer);
 		strcpy(msg_buf.ptr - sizeof(overflow_mark), overflow_mark);
@@ -56,7 +56,6 @@ void dump_msg(const char *fname)
 			return;
 		/* ignore errors as there's no way to report them */
 		write(fd, msg_buf.buffer, msg_buf.ptr - msg_buf.buffer);
-	out:
 		close(fd);
 	}
 }

test/zdtm/lib/test.c

+#define _GNU_SOURCE
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
@@ -8,6 +9,7 @@
 #include <sys/wait.h>
 #include <fcntl.h>
 #include <sys/mman.h>
+#include <sched.h>
 
 #include "zdtmtst.h"
 
@@ -158,7 +160,7 @@ void test_init(int argc, char **argv)
 #define STACK_SIZE	(8 * 4096)
 
 struct zdtm_clone_arg {
-	int pidf;
+	FILE *pidf;
 	void (*fn)(void);
 };
 

test/zdtm/live/static/Makefile

 LIBDIR	= ../../lib
 LIB	= $(LIBDIR)/libzdtmtst.a
 override CPPFLAGS += -I$(LIBDIR)
-CFLAGS	= -g -O2 -Wall
+CFLAGS	= -g -O2 -Wall -Werror
 
 TST_NOFILE	=				\
 		busyloop00			\

test/zdtm/live/static/socket_listen.c

@@ -33,7 +33,7 @@ int main(int argc, char **argv)
 	int fd, fd_s;
 	int status;
 	pid_t pid;
-	int ret, res;
+	int res;
 	uint32_t crc;
 
 	test_init(argc, argv);

test/zdtm/live/streaming/Makefile

 LIBDIR	= ../../lib
 LIB	= $(LIBDIR)/libzdtmtst.a
 override CPPFLAGS += -I$(LIBDIR)
-CFLAGS	= -g -O2 -Wall
+CFLAGS	= -g -O2 -Wall -Werror
 
 TST_NOFILE	=	\
 		pipe_loop00	\

test/zdtm/live/streaming/netlink00.c

@@ -68,7 +68,6 @@ cmd_t cmd[CMD_NUM]={form_request_add, form_request_del};
 
 int main(int argc, char *argv[])
 {
-	int ret=0;
 	int i;
 
 	test_init(argc, argv);
@@ -85,7 +84,6 @@ int main(int argc, char *argv[])
 	la.nl_pid = getpid();
 	if (bind(fd, (struct sockaddr*) &la, sizeof(la))){
 		err("bind failed: %m ");
-		ret=-1;
 		goto out;
 	}
 	//Preperation:

test/zdtm/live/transition/Makefile

 LIBDIR	= ../../lib
 LIB	= $(LIBDIR)/libzdtmtst.a
 override CPPFLAGS += -I$(LIBDIR)
-CFLAGS	= -g -O2 -Wall
+CFLAGS	= -g -O2 -Wall -Werror
 
 TST_NOFILE	=	\
 		file_read 	\

test/zdtm/live/transition/epoll.c

@@ -59,7 +59,7 @@ static void run_child(int num)
 	int fd = fds[num][1];
 	uint32_t crc = ~0;
 	size_t buf_size=512;
-	char buf[buf_size];
+	uint8_t buf[buf_size];
 	struct timeval tv;
 	struct timespec ts;
 	int rv;