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34 lines
1.1 KiB
34 lines
1.1 KiB
8 years ago
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'use strict';
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require('../common');
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const assert = require('assert');
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const SlowBuffer = require('buffer').SlowBuffer;
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// Test failed or zero-sized Buffer allocations not affecting typed arrays.
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// This test exists because of a regression that occurred. Because Buffer
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// instances are allocated with the same underlying allocator as TypedArrays,
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// but Buffer's can optional be non-zero filled, there was a regression that
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// occurred when a Buffer allocated failed, the internal flag specifying
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// whether or not to zero-fill was not being reset, causing TypedArrays to
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// allocate incorrectly.
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const zeroArray = new Uint32Array(10).fill(0);
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const sizes = [1e10, 0, 0.1, -1, 'a', undefined, null, NaN];
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const allocators = [
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Buffer,
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SlowBuffer,
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Buffer.alloc,
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Buffer.allocUnsafe,
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Buffer.allocUnsafeSlow
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];
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for (const allocator of allocators) {
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for (const size of sizes) {
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try {
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// These allocations are known to fail. If they do,
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// Uint32Array should still produce a zeroed out result.
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allocator(size);
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} catch (e) {
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assert.deepStrictEqual(new Uint32Array(10), zeroArray);
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}
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}
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}
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