1 // build-pass (FIXME(62277): could be check-pass?)
4 struct VTable<DST: ?Sized> {
5 _to_dst_ptr: fn(*mut ()) -> *mut DST,
8 trait HasVTableFor<DST: ?Sized + 'static> {
9 const VTABLE: &'static VTable<DST>;
12 impl<T, DST: ?Sized + 'static> HasVTableFor<DST> for T {
13 const VTABLE: &'static VTable<DST> = &VTable {
14 _to_dst_ptr: |_: *mut ()| unsafe { std::mem::zeroed() },
18 pub fn push<DST: ?Sized + 'static, T>() {
19 <T as HasVTableFor<DST>>::VTABLE;