{get,set,end}protoent_r regressions.

regress/lib/libc/protoent/Makefile

@@ -0,0 +1,11 @@
+#	$NetBSD: Makefile,v 1.1 2004/02/19 19:18:48 christos Exp $
+
+NOMAN=	# defined
+
+PROG=	protoent
+CPPFLAGS=-D_REENTRANT
+
+regress: ${PROG}
+	${.CURDIR}/../servent/compare /etc/protocols $>
+
+.include <bsd.prog.mk>

regress/lib/libc/protoent/protoent.c

@@ -0,0 +1,23 @@
+#include <netdb.h>
+#include <stdint.h>
+#include <netinet/in.h>
+
+int
+main(int argc, char *argv[])
+{
+	struct protoent_data pvd;
+	struct protoent *pvp, pv;
+	char **pp;
+
+	(void)memset(&pvd, 0, sizeof(pvd));
+	setprotoent_r(0, &pvd);
+	while ((pvp = getprotoent_r(&pv, &pvd)) != NULL) {
+		printf("name=%s, port=%d, aliases=",
+		    pvp->p_name, pvp->p_proto);
+		for (pp = pvp->p_aliases; *pp; pp++)
+			printf("%s ", *pp);
+		printf("\n");
+	}
+	endprotoent_r(&pvd);
+	return 0;
+}