fix __cplusplus test (pr
@@ -24,7 +24,7 @@ terms of the MIT license. A copy of the license can be found in the file
#define mi_attr_noexcept
#endif
-#if (__cplusplus >= 201703)
+#if defined(__cplusplus) && (__cplusplus >= 201703)
#define mi_decl_nodiscard [[nodiscard]]
#elif (__GNUC__ >= 4) || defined(__clang__) // includes clang, icc, and clang-cl
#define mi_decl_nodiscard __attribute__((warn_unused_result))
