+fn check_is_object_safe(tcx: TyCtxt<'_>, trait_def_id: DefId) -> bool {
+ let violations = tcx.object_safety_violations(trait_def_id);
+
+ if violations.is_empty() {
+ return true;
+ }
+
+ // If the trait contains any other violations, then let the error reporting path
+ // report it instead of emitting a warning here.
+ if violations.iter().all(|violation| {
+ matches!(
+ violation,
+ ObjectSafetyViolation::Method(_, MethodViolationCode::WhereClauseReferencesSelf, _)
+ )
+ }) {
+ for violation in violations {
+ if let ObjectSafetyViolation::Method(
+ _,
+ MethodViolationCode::WhereClauseReferencesSelf,
+ span,
+ ) = violation
+ {
+ lint_object_unsafe_trait(tcx, *span, trait_def_id, &violation);
+ }
+ }
+ return true;
+ }
+
+ false
+}
+