diff --git a/compiler/rustc_typeck/src/check/dropck.rs b/compiler/rustc_typeck/src/check/dropck.rs index bfa0d92ab47ab..4b4d29307ff6f 100644 --- a/compiler/rustc_typeck/src/check/dropck.rs +++ b/compiler/rustc_typeck/src/check/dropck.rs @@ -240,8 +240,12 @@ fn ensure_drop_predicates_are_implied_by_item_defn<'tcx>( ty::PredicateKind::ConstEvaluatable(a), ty::PredicateKind::ConstEvaluatable(b), ) => tcx.try_unify_abstract_consts((a, b)), - (ty::PredicateKind::TypeOutlives(a), ty::PredicateKind::TypeOutlives(b)) => { - relator.relate(predicate.rebind(a.0), p.rebind(b.0)).is_ok() + ( + ty::PredicateKind::TypeOutlives(ty::OutlivesPredicate(ty_a, lt_a)), + ty::PredicateKind::TypeOutlives(ty::OutlivesPredicate(ty_b, lt_b)), + ) => { + relator.relate(predicate.rebind(ty_a), p.rebind(ty_b)).is_ok() + && relator.relate(predicate.rebind(lt_a), p.rebind(lt_b)).is_ok() } _ => predicate == p, } diff --git a/src/test/ui/dropck/relate_lt_in_type_outlives_bound.rs b/src/test/ui/dropck/relate_lt_in_type_outlives_bound.rs new file mode 100644 index 0000000000000..42530d317308a --- /dev/null +++ b/src/test/ui/dropck/relate_lt_in_type_outlives_bound.rs @@ -0,0 +1,13 @@ +struct Wrapper<'a, T>(&'a T) +where + T: 'a; + +impl<'a, T> Drop for Wrapper<'a, T> +where + T: 'static, + //~^ error: `Drop` impl requires `T: 'static` but the struct it is implemented for does not +{ + fn drop(&mut self) {} +} + +fn main() {} diff --git a/src/test/ui/dropck/relate_lt_in_type_outlives_bound.stderr b/src/test/ui/dropck/relate_lt_in_type_outlives_bound.stderr new file mode 100644 index 0000000000000..5176684e15340 --- /dev/null +++ b/src/test/ui/dropck/relate_lt_in_type_outlives_bound.stderr @@ -0,0 +1,17 @@ +error[E0367]: `Drop` impl requires `T: 'static` but the struct it is implemented for does not + --> $DIR/relate_lt_in_type_outlives_bound.rs:7:8 + | +LL | T: 'static, + | ^^^^^^^ + | +note: the implementor must specify the same requirement + --> $DIR/relate_lt_in_type_outlives_bound.rs:1:1 + | +LL | / struct Wrapper<'a, T>(&'a T) +LL | | where +LL | | T: 'a; + | |__________^ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0367`.