fix ericniebler#1546: Visibility bug in gcc-9 and below using concepts

marehr · Aug 10, 2020 · c43fc69 · c43fc69
1 parent 4989f3e
commit c43fc69
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/include/concepts/concepts.hpp b/include/concepts/concepts.hpp
@@ -427,7 +427,8 @@
 
 /// INTERNAL ONLY
 #define CPP_BROKEN_FRIEND_RETURN_TYPE_AUX_3_(...)                               \
-    __VA_ARGS__ && CPP_TRUE_FN>>
+    (__VA_ARGS__ && CPP_TRUE_FN)>>                                              \
+    /**/
 
 #ifdef CPP_WORKAROUND_MSVC_779763
 #define CPP_broken_friend_member                                                \