{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"let"}]}
        let ptr = bx.cx.context.new_call(None, eh_pointer_builtin, &[zero]);
        let zero = bx.cx.context.new_rvalue_zero(bx.int_type);
        let catch_ty = bx.type_func(&[bx.type_i8p(), bx.type_i8p()], bx.type_void());