diff options
| -rw-r--r-- | src/librustc/middle/ty_fold.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/librustc/middle/ty_fold.rs b/src/librustc/middle/ty_fold.rs index de7a93d8d12..69d32c3f5fc 100644 --- a/src/librustc/middle/ty_fold.rs +++ b/src/librustc/middle/ty_fold.rs @@ -71,7 +71,7 @@ pub trait TypeFolder<'tcx> : Sized { fn exit_region_binder(&mut self) { } fn fold_binder<T>(&mut self, t: &ty::Binder<T>) -> ty::Binder<T> - where T : TypeFoldable<'tcx> + Repr<'tcx> + where T : TypeFoldable<'tcx> + Repr<'tcx> + Clone { // FIXME(#20526) this should replace `enter_region_binder`/`exit_region_binder`. super_fold_binder(self, t) @@ -186,7 +186,7 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Vec<T> { } } -impl<'tcx, T:TypeFoldable<'tcx>+Repr<'tcx>> TypeFoldable<'tcx> for ty::Binder<T> { +impl<'tcx, T:TypeFoldable<'tcx>+Repr<'tcx>+Clone> TypeFoldable<'tcx> for ty::Binder<T> { fn fold_with<F: TypeFolder<'tcx>>(&self, folder: &mut F) -> ty::Binder<T> { folder.fold_binder(self) } |