From e0a40f3045d7a44355115fe1ceda6004b6412544 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Wed, 24 Jan 2018 17:46:20 +0000
Subject: [PATCH] Mark the unused argument to continue_thread() as such.

clang in HEAD and 11 does not warn about this, but clang in 10 does.
---
 tests/sys/kern/ptrace_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/sys/kern/ptrace_test.c b/tests/sys/kern/ptrace_test.c
index 694a3b4044e..a9afac55504 100644
--- a/tests/sys/kern/ptrace_test.c
+++ b/tests/sys/kern/ptrace_test.c
@@ -3474,7 +3474,7 @@ ATF_TC_BODY(ptrace__PT_STEP_with_signal, tc)
  * that restarting doesn't retrigger the breakpoint.
  */
 static void *
-continue_thread(void *arg)
+continue_thread(void *arg __unused)
 {
 	breakpoint();
 	return (NULL);