1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/js1_7/geniter/regress-387871.js b/js/src/tests/js1_7/geniter/regress-387871.js
new file mode 100644
index 000000000..bb5202dae
--- /dev/null
+++ b/js/src/tests/js1_7/geniter/regress-387871.js
@@ -0,0 +1,41 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 387871;
+var summary = 'Do not assert: gen->state != JSGEN_RUNNING && gen->state != JSGEN_CLOSING';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+ 
+  var a = gen();
+
+  try {
+    a.next();
+    throw "a.next() should throw about already invoked generator";
+  } catch (e) {
+    if (!(e instanceof TypeError))
+      throw e;
+  }
+
+  function gen()
+  {
+    for (x in a)
+      yield 1;
+  }
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}