and "config.h" was missing as well.
Patch from Svyatoslav Mishyn <juef and openmailbox dot org>, Crux Linux.
-/* $Id: tag.c,v 1.6 2015/07/28 18:38:55 schwarze Exp $ */
+/* $Id: tag.c,v 1.7 2015/08/29 15:28:13 schwarze Exp $ */
/*
* Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
*
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#include "config.h"
+
#include <sys/types.h>
#include <signal.h>
#include <stddef.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>