From 40449e5fd41344c1a44c8acf5184ca4545fc7d0c Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 31 Jul 2021 18:25:34 +0100
Subject: Unlocking an unlocked mutex trips tsan

---
 test/semaphore.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/semaphore.cpp b/test/semaphore.cpp
index 09124ee..b7e089f 100644
--- a/test/semaphore.cpp
+++ b/test/semaphore.cpp
@@ -21,7 +21,7 @@ semaphore::acquire()
 bool
 semaphore::try_dec()
 {
-	std::lock_guard lk {m};
+	m.lock();
 	if (v) {
 		v--;
 		m.unlock();
-- 
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