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https://github.com/RGBCube/serenity
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LibWeb: Treat BufferSource as a DataView/ArrayBuffer/TA in IDL overloads
Required by WebAssembly.instantiate.
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commit
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3 changed files with 130 additions and 3 deletions
111
Tests/LibWeb/Text/input/Wasm/WebAssembly-instantiate.html
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111
Tests/LibWeb/Text/input/Wasm/WebAssembly-instantiate.html
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@ -0,0 +1,111 @@
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<script src="../include.js"></script>
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<script>
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asyncTest(async (done) => {
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let wasm;
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const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
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let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
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cachedTextDecoder.decode();
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let cachedUint8Memory0 = null;
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function getUint8Memory0() {
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if (cachedUint8Memory0 === null || cachedUint8Memory0.byteLength === 0) {
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cachedUint8Memory0 = new Uint8Array(wasm.memory.buffer);
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}
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return cachedUint8Memory0;
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}
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function getStringFromWasm0(ptr, len) {
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ptr = ptr >>> 0;
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return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
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}
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const exports = {
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"./wasm_test_bg.js": {
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__wbg_println_95d984b86202de7b(arg0, arg1) {
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println(getStringFromWasm0(arg0, arg1));
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},
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greet() {
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wasm.greet();
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},
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},
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};
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const arrayBuffer = new Uint8Array([
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]).buffer;
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const BUFFER_SOURCES = [
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{ constructor: Uint8Array, flaky: true },
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{ constructor: Uint8ClampedArray, flaky: true },
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{ constructor: Uint16Array, flaky: true },
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{ constructor: Uint32Array, flaky: true },
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{ constructor: Int8Array, flaky: true },
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{ constructor: Int16Array, flaky: true },
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{ constructor: Float32Array, flaky: true },
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{ constructor: Float64Array, flaky: true },
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{ constructor: BigUint64Array, flaky: true },
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{ constructor: BigInt64Array, flaky: true },
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{ constructor: DataView, flaky: true },
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];
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async function runTest(buffer) {
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println("-------------")
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println(buffer.constructor.name);
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println("-------------")
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const module = await WebAssembly.instantiate(buffer, exports);
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wasm = module.instance?.exports ?? module.exports;
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try {
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wasm.greet();
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} catch (e) {
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println(`FIXME: Failed to execute with ${buffer.constructor.name}: ${e.name}: ${e.message}`);
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}
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return Promise.resolve();
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}
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await runTest(arrayBuffer);
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for (const { constructor, flaky } of BUFFER_SOURCES) {
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if (!flaky) {
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await runTest(new constructor(arrayBuffer));
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} else {
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// The flakiness is the runtime either trapping with a RangeError, or the printed string being complete garbage,
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// which more prominently happens with DataView and the arrays bigger than u8. However, the RangeError flake is
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// still possible with u8.
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println(`FIXME: Run test for ${constructor.name}. Not running due to flakiness.`);
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}
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}
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if (false) {
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const compiledModule = await WebAssembly.compile(arrayBuffer);
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await runTest(compiledModule);
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} else {
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// Same issues as above.
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println(`FIXME: Run test for WebAssembly.Module. Not running due to flakiness.`);
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}
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done();
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});
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</script>
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