50930a0fa0
PR-URL: https://github.com/nodejs/node/pull/39469 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
24 lines
895 B
JavaScript
24 lines
895 B
JavaScript
// Copyright 2021 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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function fastAssertEquals(expected, actual) {
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if (expected === actual) return;
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// Formatting large BigInts to base-10 string is slow and verbose, so format
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// them to hex strings and report only a prefix.
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throw new MjsUnitAssertionError(
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'Failure:\nexpected:\n0x' +
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expected.toString(16).substring(0, 1000) +
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'...n\nfound:\n0x' +
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actual.toString(16).substring(0, 1000) + '...n');
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}
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function regress_1228267(power) {
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let a = 2n ** power;
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let a_squared = a * a;
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let expected = 2n ** (2n * power);
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fastAssertEquals(expected, a_squared);
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}
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regress_1228267(1273000n); // This triggered the bug on 32-bit platforms.
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regress_1228267(2564000n); // This triggered the bug on 64-bit platforms.
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