--- /dev/null
+'use strict';
+// Refs: https://github.com/nodejs/node/pull/5916
+
+const common = require('../common');
+const assert = require('assert');
+const spawn = require('child_process').spawn;
+const net = require('net');
+
+if (process.argv[2] === 'child') {
+ assert(process.stdin instanceof net.Socket);
+ return;
+}
+
+const proc = spawn(process.execPath, [__filename, 'child'], { stdio: 'ignore' });
+// To double-check this test, set stdio to 'pipe' and uncomment the line below.
+// proc.stderr.pipe(process.stderr);
+proc.on('exit', common.mustCall(function(exitCode) {
+ process.exitCode = exitCode;
+}));