timers: make unref'd timeouts execute in a domain

lib/timers.js

@@ -257,6 +257,7 @@ Timeout.prototype.unref = function() {
     this._handle = new Timer();
     this._handle.ontimeout = this._onTimeout;
     this._handle.start(this._when - Date.now(), 0);
+    this._handle.domain = this.domain;
     this._handle.unref();
   } else {
     this._handle.unref();

test/simple/test-domain-timers.js

@@ -0,0 +1,60 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var domain = require('domain');
+var assert = require('assert');
+var common = require('../common.js');
+
+var timeout_err, timeout, immediate_err;
+
+var timeoutd = domain.create();
+
+timeoutd.on('error', function(e) {
+  timeout_err = e;
+  clearTimeout(timeout);
+});
+
+timeoutd.run(function() {
+  setTimeout(function() {
+    throw new Error('Timeout UNREFd');
+  }).unref();
+});
+
+var immediated = domain.create();
+
+immediated.on('error', function(e) {
+  immediate_err = e;
+});
+
+immediated.run(function() {
+  setImmedaite(function() {
+    throw new Error('Immediate Error');
+  });
+});
+
+timeout = setTimeout(function() {}, 10 * 1000);
+
+process.on('exit', function() {
+  assert.equal(timeout_err.message, 'Timeout UNREFd',
+      'Domain should catch timer error');
+  assert.equal(immediate_err.message, 'Immediate Error',
+      'Domain should catch immediate error');
+});