1 // { dg-do compile { target c++20 } }
2 
3 namespace std {
4   struct source_location {
5     static void __impl ();
6   };
7 }
8 
9 auto x = __builtin_source_location ();	// { dg-error "'std::source_location::__impl\\(\\)' is not a type" }
10 // { dg-message "evaluating '__builtin_source_location'" "" { target *-*-* } .-1 }
11