使用 rustwasm 编写简单的 wasm 代码：测量数组长度

use wasm_bindgen::prelude::*;

#[wasm_bindgen]
pub fn length(input: &[u8]) -> usize {
    input.len()
}

wasm-bindgen 版本为 0.2.100

Android, Windows, macOS 客户端表现均正常， iOS 客户端在 WXWebAssembly.instantiate 处报错

{message: "CompileError: invalid wasm file", line: 1, column: 277, stack: "@[native code]↵@↵L@https://lib/WAServiceMainContext.js:1:334105↵@↵MQe@https://lib/WAServiceMainContext.js:1:2205032↵@https://usr//appservice.app.js:57:44↵h@https://lib/WAServiceMainContext.js:1:41859↵_callee$@https://usr//appservice.app.js:69:30↵@https://usr//appservice.app.js:6:2617↵h@https://lib/WAServiceMainContext.js:1:41859↵s@https://usr//appservice.app.js:6:2862↵@https://usr//appservice.app.js:6:8228↵h@https://lib/WAServiceMainContext.js:1:41859↵_tmp12@https://usr//appservice.app.js:6:8660↵@https://usr//appservice.app.js:6:4396↵h@https://lib/WAServiceMainContext.js:1:41859↵@https://usr//appservice.app.js:6:4458↵@https://usr//appservice.app.js:3:466↵h@https://lib/WAServiceMainContext.js:1:41859↵asyncGeneratorStep@https://usr//appservice.app.js:3:757↵@https://usr//appservice.app.js:3:1470↵h@https://lib/WAServiceMainContext.js:1:41859↵c@https://usr//appservice.app.js:3:1527↵@https://usr//appservice.app.js:3:1763↵h@https://lib/WAServiceMainContext.js:1:41859↵@https://usr//appservice.app.js:3:1802↵j@https://lib/WASubContext.js:1:59069↵@https://usr//appservice.app.js:3:1152↵h@https://lib/WAServiceMainContext.js:1:41859↵_tmp3@https://usr//appservice.app.js:3:1863↵@https://usr//appservice.app.js:71:20↵h@https://lib/WAServiceMainContext.js:1:41859↵_wbg_load@https://usr//appservice.app.js:72:22↵@https://usr//appservice.app.js:47:20↵h@https://lib/WAServiceMainContext.js:1:41859↵__wbg_load@https://usr//appservice.app.js:48:22↵@https://usr//appservice.app.js:112:29↵h@https://lib/WAServiceMainContext.js:1:41859↵_callee2$@https://usr//appservice.app.js:122:31↵@https://usr//appservice.app.js:6:2617↵h@https://lib/WAServiceMainContext.js:1:41859↵s@https://usr//appservice.app.js:6:2862↵@https://usr//appservice.app.js:6:8228↵h@https://lib/WAServiceMainContext.js:1:41859↵_tmp12@https://usr//appservice.app.js:6:8660↵@https://usr//appservice.app.js:6:4396↵h@https://lib/WAServiceMainContext.js:1:41859↵@https://usr//appservice.app.js:6:4458↵@https://usr//appservice.app.js:3:466↵h@https://lib/WAServiceMainContext.js:1:41859↵asyncGeneratorStep@https://usr//appservice.app.js:3:757↵@https://usr//appservice.app.js:3:1470↵h@https://lib/WAServiceMainContext.js:1:41859↵c@https://usr//appservice.app.js:3:1527↵@https://usr//appservice.app.js:3:1763↵h@https://lib/WAServiceMainContext.js:1:41859↵@https://usr//appservice.app.js:3:1802↵j@https://lib/WASubContext.js:1:59069↵@https://usr//appservice.app.js:3:1152↵h@https://lib/WAServiceMainContext.js:1:41859↵_tmp3@https://usr//appservice.app.js:3:1863↵@https://usr//appservice.app.js:124:20↵h@https://lib/WAServiceMainContext.js:1:41859↵_wbg_init@https://usr//appservice.app.js:125:23↵@https://usr//appservice.app.js:96:20↵h@https://lib/WAServiceMainContext.js:1:41859↵__wbg_init@https://usr//appservice.app.js:97:23↵@https://usr//pages/index/index.appservice.js:18:67↵h@https://lib/WAServiceMainContext.js:1:41859↵_callee$@https://usr//pages/index/index.appservice.js:28:32↵@https://usr//appservice.app.js:6:2617↵h@https://lib/WAServiceMainContext.js:1:41859↵s@https://usr//appservice.app.js:6:2862↵@https://usr//appservice.app.js:6:8228↵h@https://lib/WAServiceMainContext.js:1:41859↵_tmp12@https://usr//appservice.app.js:6:8660↵@https://usr//appservice.app.js:6:4396↵h@https://lib/WAServiceMainContext.js:1:41859↵@https://usr//appservice.app.js:6:4458↵@https://usr//appservice.app.js:3:466↵h@https://lib/WAServiceMainContext.js:1:41859↵asyncGeneratorStep@https://usr//appservice.app.js:3:757↵@https://usr//appservice.app.js:3:1470↵h@https://lib/WAServiceMainContext.js:1:41859↵c@https://usr//appservice.app.js:3:1527↵@https://usr//appservice.app.js:3:1763↵h@https://lib/WAServiceMainContext.js:1:41859↵@https://usr//appservice.app.js:3:1802↵j@https://lib/WASubContext.js:1:59069↵@https://usr//appservice.app.js:3:1152↵h@https://lib/WAServiceMainContext.js:1:41859↵_tmp3@https://usr//appservice.app.js:3:1863↵@https://usr//pages/index/index.appservice.js:29:56↵h@https://lib/WAServiceMainContext.js:1:41859↵onLoad@https://usr//pages/index/index.appservice.js:30:24↵@https://lib/WASubContext.js:1:452622↵@https://lib/WASubContext.js:1:452415↵@https://lib/WASubContext.js:1:464587↵@https://lib/WASubContext.js:1:424215↵@https://lib/WASubContext.js:1:465128"}

请帮忙看看，谢谢～