Fix building under MSVC

diff --git a/src/jthread/jsemaphore.h b/src/jthread/jsemaphore.h
index b62add253d64cedb295a73eecd6ec979df07cc6f..bdce2e4aeb0d338f33950969108b7ef33cea0860 100644 (file)
--- a/src/jthread/jsemaphore.h
+++ b/src/jthread/jsemaphore.h
@@ -22,6 +22,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #if defined(WIN32)
 #include <windows.h>
+#include <assert.h>
 #define MAX_SEMAPHORE_COUNT 1024
 #else
 #include <pthread.h>