1 files changed, 42 insertions, 0 deletions
diff --git a/tools/regression/tls/ttls4/ttls4.c b/tools/regression/tls/ttls4/ttls4.c
new file mode 100644
index 000000000000..60cd91d4542a
--- /dev/null
+++ b/tools/regression/tls/ttls4/ttls4.c
@@ -0,0 +1,42 @@
+/*
+ * This program tests if a new thread's initial tls data
+ * is clean.
+ *
+ * David Xu <davidxu@freebsd.org>
+ */
+
+#include <stdio.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int __thread n;
+
+void
+*f1(void *arg)
+{
+	if (n != 0) {
+		printf("bug, n == %d \n", n);
+		exit(1);
+	}
+	n = 1;
+	return (0);
+}
+
+int
+main(void)
+{
+	pthread_t td;
+	int i;
+
+	for (i = 0; i < 1000; ++i) {
+		pthread_create(&td, NULL, f1, NULL);
+		pthread_join(td, NULL);
+	}
+	sleep(2);
+	for (i = 0; i < 1000; ++i) {
+		pthread_create(&td, NULL, f1, NULL);
+		pthread_join(td, NULL);
+	}
+	return (0);
+}