{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
        // not a `ConstArgKind::Infer` so there is no risk of transmuting a `()` to `AmbigArg`.
        // the same across different ZST type arguments. We also asserted that the `self` is
        let ptr = self as *const ConstArg<'hir> as *const ConstArg<'hir, AmbigArg>;