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unreachable 用于表示不可到达的代码点。unreachable 是无条件的陷阱:要是执行到 unreachable,该指令会触发陷阱。
unreachable
(module (func (export "throw") unreachable ) )
const url = "{%wasm-url%}"; await WebAssembly.instantiateStreaming(fetch(url)).then((result) => { result.instance.exports.throw(); // 期望的输出:RuntimeError: unreachable });
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