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16e03e7968
PR-URL: https://github.com/nodejs/node/pull/45579 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
38 lines
1.5 KiB
JavaScript
38 lines
1.5 KiB
JavaScript
// Copyright 2022 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: --experimental-wasm-gc --allow-natives-syntax
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import {struct, array} from 'gc-js-interop-export.mjs';
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// Read struct and array with new wasm module.
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let builder = new WasmModuleBuilder();
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builder.setSingletonRecGroups();
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let struct_type = builder.addStruct([makeField(kWasmI32, true)]);
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let array_type = builder.addArray(kWasmI32, true);
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builder.addFunction('readStruct', makeSig([kWasmExternRef], [kWasmI32]))
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.exportFunc()
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.addBody([
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kExprLocalGet, 0, // --
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kGCPrefix, kExprExternInternalize, // --
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kGCPrefix, kExprRefAsStruct, // --
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kGCPrefix, kExprRefCast, struct_type, // --
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kGCPrefix, kExprStructGet, struct_type, 0, // --
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]);
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builder.addFunction('readArrayLength', makeSig([kWasmExternRef], [kWasmI32]))
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.exportFunc()
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.addBody([
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kExprLocalGet, 0, // --
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kGCPrefix, kExprExternInternalize, // --
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kGCPrefix, kExprRefAsArray, // --
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kGCPrefix, kExprArrayLen,
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]);
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let instance = builder.instantiate();
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let wasm = instance.exports;
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assertEquals(42, wasm.readStruct(struct));
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assertEquals(2, wasm.readArrayLength(array));
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assertTraps(kTrapIllegalCast, () => wasm.readStruct(array));
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assertTraps(kTrapIllegalCast, () => wasm.readArrayLength(struct));
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