1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Environment-names-03.js b/js/src/jit-test/tests/debug/Environment-names-03.js
new file mode 100644
index 0000000000..cffc7cb461
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Environment-names-03.js
@@ -0,0 +1,22 @@
+// Optimized out scopes should have working names().
+
+var g = newGlobal({newCompartment: true});
+var dbg = new Debugger;
+dbg.addDebuggee(g);
+
+g.eval("" + function f() {
+  var x = 42;
+  function g() { }
+  g();
+});
+
+dbg.onEnterFrame = function (f) {
+  if (f.callee && (f.callee.name === "g")) {
+    var names = f.environment.parent.names();
+    assertEq(names.indexOf("x") !== -1, true);
+    assertEq(names.indexOf("g") !== -1, true);
+    assertEq(names.length, 3); // x,g,arguments
+  }
+}
+
+g.f();