After complaining about lack of friendship, we should not try to go on and
define the defaulted comparison operator anyway.
PR c++/107291
gcc/cp/ChangeLog:
* method.cc (early_check_defaulted_comparison): Fail if not friend.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/spaceship-eq17.C: New test.
/* Defaulted outside the class body. */
ctx = TYPE_MAIN_VARIANT (parmtype);
if (!is_friend (ctx, fn))
- error_at (loc, "defaulted %qD is not a friend of %qT", fn, ctx);
+ {
+ error_at (loc, "defaulted %qD is not a friend of %qT", fn, ctx);
+ inform (location_of (ctx), "declared here");
+ ok = false;
+ }
}
else if (!same_type_ignoring_top_level_qualifiers_p (parmtype, ctx))
saw_bad = true;
--- /dev/null
+// PR c++/107291
+// { dg-do compile { target c++20 } }
+
+struct S4; // { dg-message "declared here" }
+bool operator==(S4 const &, S4 const &) = default; // { dg-error "not a friend" }