2 files changed, 81 insertions, 0 deletions
diff --git a/lib/libc/tests/stdlib/dynthr_mod/Makefile b/lib/libc/tests/stdlib/dynthr_mod/Makefile
new file mode 100644
index 000000000000..3602e81e5be1
--- /dev/null
+++ b/lib/libc/tests/stdlib/dynthr_mod/Makefile
@@ -0,0 +1,10 @@
+SHLIB_NAME=	dynthr_mod.so
+SHLIBDIR=	${TESTSDIR}
+SRCS=		dynthr_mod.c
+LIBADD=		pthread
+PACKAGE=	tests
+
+TESTSDIR:=	${TESTSBASE}/${RELDIR:C/libc\/tests/libc/:H}
+
+
+.include <bsd.lib.mk>
diff --git a/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c b/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c
new file mode 100644
index 000000000000..eccffcd0bd49
--- /dev/null
+++ b/lib/libc/tests/stdlib/dynthr_mod/dynthr_mod.c
@@ -0,0 +1,71 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2019 Andrew Gierth
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Though this file is initially distributed under the 2-clause BSD license,
+ * the author grants permission for its redistribution under alternative
+ * licenses as set forth at <https://rhodiumtoad.github.io/RELICENSE.txt>.
+ * This paragraph and the RELICENSE.txt file are not part of the license and
+ * may be omitted in redistributions.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <pthread.h>
+
+void mod_main(int op);
+
+static pthread_t thr;
+
+static void *
+mod_thread(void *ptr __unused)
+{
+	char *volatile dummy;
+
+	dummy = malloc(500);
+	*dummy = 'a';
+	return (NULL);
+}
+
+void
+mod_main(int op)
+{
+	int rc;
+
+	switch (op) {
+	case 1:
+		rc = pthread_create(&thr, NULL, mod_thread, NULL);
+		if (rc != 0)
+			_exit(1);
+		break;
+	case 0:
+		pthread_join(thr, NULL);
+		break;
+	}
+}
+