1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Environment-02.js b/js/src/jit-test/tests/debug/Environment-02.js
new file mode 100644
index 0000000000..77af721a29
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Environment-02.js
@@ -0,0 +1,20 @@
+// The last Environment on the environment chain always has .type == "object" and .object === the global object.
+
+var g = newGlobal({newCompartment: true});
+var dbg = new Debugger;
+var gw = dbg.addDebuggee(g);
+g.eval("function h() { debugger; }");
+var hits = 0;
+dbg.onDebuggerStatement = function (hframe) {
+    var env = hframe.older.environment;
+    while (env.parent)
+        env = env.parent;
+    assertEq(env.type, "object");
+    assertEq(env.object, gw);
+    hits++;
+};
+
+g.eval("h();");
+g.eval("(function () { h(); return []; })();");
+g.eval("with (Math) { h(-2 * PI); }");
+assertEq(hits, 3);