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Add Clone to the list of bounds for a TypeFolder. (Kill?)

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This commit is contained in:
Niko Matsakis 2015-01-11 15:21:45 -05:00
parent 7d68250eb4
commit 25a27977fa
1 changed files with 2 additions and 2 deletions
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4
src/librustc/middle/ty_fold.rs
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@ -71,7 +71,7 @@ fn enter_region_binder(&mut self) { }
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 @@ fn fold_with<F: TypeFolder<'tcx>>(&self, folder: &mut F) -> 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)
}