Many fallthrough switch cases now have the FALLTHROUGH macro to tell the compiler that this is intended.

platform/windows/os_windows.cpp

@@ -843,8 +843,8 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 			if (wParam==VK_WIN) TODO wtf is this?
 				meta_mem=uMsg==WM_KEYDOWN;
 			*/
-
-		} //fallthrough
+			FALLTHROUGH;
+		}
 		case WM_CHAR: {
 
 			ERR_BREAK(key_event_pos >= KEY_EVENT_BUFFER_SIZE);