85ab4a5f12
Several changes:
* Soft-Deprecate Buffer() constructors
* Add `Buffer.from()`, `Buffer.alloc()`, and `Buffer.allocUnsafe()`
* Add `--zero-fill-buffers` command line option
* Add byteOffset and length to `new Buffer(arrayBuffer)` constructor
* buffer.fill('') previously had no effect, now zero-fills
* Update the docs
PR-URL: https://github.com/nodejs/node/pull/4682
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
33 lines
986 B
JavaScript
33 lines
986 B
JavaScript
'use strict';
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// Flags: --expose-gc
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const common = require('../common');
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const assert = require('assert');
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// v8 fails silently if string length > v8::String::kMaxLength
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// v8::String::kMaxLength defined in v8.h
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const kStringMaxLength = process.binding('buffer').kStringMaxLength;
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const skipMessage =
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'1..0 # Skipped: intensive toString tests due to memory confinements';
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if (!common.enoughTestMem) {
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console.log(skipMessage);
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return;
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}
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assert(typeof gc === 'function', 'Run this test with --expose-gc');
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try {
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var buf = Buffer.allocUnsafe(kStringMaxLength);
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// Try to allocate memory first then force gc so future allocations succeed.
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Buffer.allocUnsafe(2 * kStringMaxLength);
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gc();
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} catch (e) {
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// If the exception is not due to memory confinement then rethrow it.
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if (e.message !== 'Array buffer allocation failed') throw (e);
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console.log(skipMessage);
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return;
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}
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const maxString = buf.toString('binary');
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assert.equal(maxString.length, kStringMaxLength);
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