{"ast_node_type":"variable","tokens":[{"end":40,"kind":"keyword","start":0,"text":"let"}]}
        let ptr = ptr.to_pointer(self)?;
        // we hence can't call `size_and_align_of` since that asserts more validity than we want.
        interp_ok(self.ptr_with_meta_to_mplace(ptr, meta, layout, /*unaligned*/ false))