Core: Check for C++17 before defining LV_NODISCARD as [[nodiscard]].

kaixiong · kaixiong · commit c0f6a3fa4415 · 2023-02-13T21:32:24.000+08:00
diff --git a/libvisual/libvisual/lv_defines.h b/libvisual/libvisual/lv_defines.h
@@ -120,7 +120,7 @@
   #define __PRETTY_FUNCTION__ __FUNCTION__
 #endif
 
-#ifdef __cplusplus
+#if __cplusplus >= 201703L
   #define LV_NODISCARD [[nodiscard]]
 #elif defined(_MSC_VER) && _MSC_VER >= 1700
   #define LV_NODISCARD _Check_return_
