{"ast_node_type":"variable","tokens":[{"end":39,"kind":"keyword","start":0,"text":"let"}]}
        let tydesc = bx.declare_global(
            bx.const_struct(&[type_info_vtable, bx.const_null(bx.type_ptr()), type_name], false);
            &mangle_internal_symbol(bx.tcx, "__rust_panic_type_info"),