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# The logtime test is used to compare the kernel realtime
# clock and the kernel monotonic clock, so that leap
# second may be observed.
diff -Naru old/tests/ntpd/logtime.c new/tests/ntpd/logtime.c
--- old/tests/ntpd/logtime.c 1969-12-31 18:00:00.000000000 -0600
+++ new/tests/ntpd/logtime.c 2017-05-30 13:22:11.827179154 -0500
@@ -0,0 +1,44 @@
+#include <time.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <syslog.h>
+/*
+ * Generate a log messages 4 times per second
+ * to verify leap second. The CLOCK_MONOTONIC_RAW
+ * is the time since boot unaffected by adjustments.
+ *
+ * CLOCK_REALTIME is the UTC clock, which is affected
+ * by leap seconds.
+ *
+ * Program does not exit.
+ *
+ */
+main()
+{
+ openlog("CTST",0,LOG_LOCAL2);
+ while(1) {
+ struct timespec ts,unused,ep;
+ if (clock_gettime(CLOCK_MONOTONIC,&ts) == 0) {
+
+ if(ts.tv_nsec < 750000000)
+ ts.tv_nsec += 250000000;
+ else {
+ ts.tv_nsec -= 750000000;
+ ts.tv_sec += 1;
+ }
+ clock_nanosleep(CLOCK_MONOTONIC,TIMER_ABSTIME,&ts,&unused);
+ clock_gettime(CLOCK_MONOTONIC_RAW,&ts);
+ ts.tv_nsec /= 1000000;
+ clock_gettime(CLOCK_REALTIME,&ep);
+ ep.tv_nsec /= 1000000;
+ syslog(LOG_NOTICE,"epoch: %lu.%3.3ld boot: %lu.%3.3ld",
+ ep.tv_sec,ep.tv_nsec,
+ ts.tv_sec,ts.tv_nsec);
+
+ }
+
+
+ }
+
+}
diff -Naru old/tests/ntpd/Makefile.am new/tests/ntpd/Makefile.am
--- old/tests/ntpd/Makefile.am 2017-05-30 13:31:45.124160267 -0500
+++ new/tests/ntpd/Makefile.am 2017-05-30 16:53:59.784755988 -0500
@@ -29,6 +29,7 @@
test-ntp_restrict \
test-ntp_scanner \
test-ntp_signd \
+ logtime \
$(NULL)
@@ -191,8 +192,8 @@
## check-libntp.mf - automake fragment
## slightly adapted for deeper directory
-BUILT_SOURCES += check-libntpd check-libntp check-libunity
-CLEANFILES += check-libntpd check-libntp check-libunity
+BUILT_SOURCES += check-libntpd check-libntp check-libunity logtime
+CLEANFILES += check-libntpd check-libntp check-libunity logtime
check-libntpd: ../../ntpd/libntpd.a
@echo stamp > $@
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