More specific assertion for unlocking mutex not owned by the current …

…thread (#5099)
microsoft · Nov 22, 2024 · 9b8a09a · 9b8a09a
1 parent fec1c8b
commit 9b8a09a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/stl/src/mutex.cpp b/stl/src/mutex.cpp
@@ -147,8 +147,9 @@ static _Thrd_result mtx_do_lock(_Mtx_t mtx, const _timespec64* target) noexcept
 }
 
 _CRTIMP2_PURE _Thrd_result __cdecl _Mtx_unlock(_Mtx_t mtx) noexcept { // unlock mutex
+    _THREAD_ASSERT(mtx->_Count > 0, "unlock of unowned mutex");
     _THREAD_ASSERT(
-        1 <= mtx->_Count && mtx->_Thread_id == static_cast<long>(GetCurrentThreadId()), "unlock of unowned mutex");
+        mtx->_Thread_id == static_cast<long>(GetCurrentThreadId()), "unlock of mutex not owned by the current thread");
 
     if (--mtx->_Count == 0) { // leave critical section
         mtx->_Thread_id = -1;