cfbf9e0d14
PR-URL: https://github.com/nodejs/node/pull/52465 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com>
50 lines
1.8 KiB
JavaScript
50 lines
1.8 KiB
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --wasm-staging
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d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
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const builder = new WasmModuleBuilder();
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builder.startRecGroup();
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let $array0 = builder.addArray(kWasmI8, true, kNoSuperType, true);
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builder.endRecGroup();
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let $sig0 = builder.addType(kSig_i_v);
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let $sig1 = builder.addType(makeSig([kWasmI32], [wasmRefType(kWasmExternRef)]));
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let $sig2 = builder.addType(makeSig([kWasmExternRef, kWasmI32], [kWasmI32]));
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let $sig3 = builder.addType(makeSig(
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[wasmRefNullType($array0), kWasmI32, kWasmI32],
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[wasmRefType(kWasmExternRef)]));
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let $fromCharCode = builder.addImport("wasm:js-string", "fromCharCode", $sig1);
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let $charCodeAt = builder.addImport("wasm:js-string", "charCodeAt", $sig2);
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let $decodeStringFromUTF8Array =
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builder.addImport('wasm:text-decoder', 'decodeStringFromUTF8Array', $sig3);
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let $main = builder.addFunction("main", $sig0).exportFunc();
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// One valid and one invalid UTF-8 byte.
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let $data0 = builder.addPassiveDataSegment([97, 141]);
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// func $main: [] -> [kWasmI32]
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$main.addBody([
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// Create an array from the data segment.
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kExprI32Const, 0,
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kExprI32Const, 2,
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kGCPrefix, kExprArrayNewData, $array0, $data0,
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// Create a string from the array.
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kExprI32Const, 0,
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kExprI32Const, 2,
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kExprCallFunction, $decodeStringFromUTF8Array,
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// The invalid UTF-8 byte should have been replaced with the replacement
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// character 0xFFFD. Read it and return it.
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kExprI32Const, 1,
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kExprCallFunction, $charCodeAt,
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]);
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let kBuiltins = { builtins: ['js-string', 'text-decoder', 'text-encoder'] };
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const instance = builder.instantiate({}, kBuiltins);
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assertEquals(0xFFFD, instance.exports.main());
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