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// Flags: --expose-gc
'use strict';
const common = require('../common');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const path = require('path');
// Regression test for https://github.com/nodejs/node-v0.x-archive/issues/814:
// Make sure that Buffers passed to fs.write() are not garbage-collected
// even when the callback is being reused.
const fs = require('fs');
tmpdir.refresh();
const filename = path.join(tmpdir.path, 'test.txt');
const fd = fs.openSync(filename, 'w');
const size = 16 * 1024;
const writes = 1000;
let done = 0;
const ondone = common.mustSucceed(() => {
if (++done < writes) {
if (done % 25 === 0) global.gc();
setImmediate(write);
} else {
assert.strictEqual(
fs.readFileSync(filename, 'utf8'),
'x'.repeat(writes * size));
fs.closeSync(fd);
}
}, writes);
write();
function write() {
const buf = Buffer.alloc(size, 'x');
fs.write(fd, buf, 0, buf.length, -1, ondone);
}
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