forked from LeenkxTeam/Kmake
41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
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// 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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let $sig3 = builder.addType(kSig_i_v);
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let $sig7 = builder.addType(makeSig([kWasmI32], [wasmRefType(kWasmExternRef)]));
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let $sig8 = builder.addType(makeSig([kWasmExternRef, kWasmI32], [kWasmI32]));
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let $fromCharCode = builder.addImport("wasm:js-string", "fromCharCode", $sig7);
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let $charCodeAt = builder.addImport("wasm:js-string", "charCodeAt", $sig8);
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let $oob = builder.addFunction("oob", $sig3).exportFunc();
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let $inbounds = builder.addFunction("inbounds", $sig3).exportFunc();
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$oob.addBody([
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...wasmI32Const(0x8000_0061),
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kExprCallFunction, $fromCharCode,
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// arm64 erroneously mapped this to 0, resulting in an in-bounds access.
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...wasmI32Const(0x8000_0000),
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kExprCallFunction, $charCodeAt,
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]);
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$inbounds.addBody([
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// x64 erroneously mapped this to -0x8000_0000, resulting in the char
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// code (after masking) being 0.
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...wasmI32Const(0x8000_0061),
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kExprCallFunction, $fromCharCode,
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...wasmI32Const(0),
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kExprCallFunction, $charCodeAt,
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]);
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let kBuiltins = { builtins: ['js-string'] };
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const instance = builder.instantiate({}, kBuiltins);
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assertThrows(() => instance.exports.oob(), WebAssembly.RuntimeError,
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'string offset out of bounds');
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assertEquals(0x61, instance.exports.inbounds());
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