1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-03.js b/js/src/jit-test/tests/debug/Frame-03.js
new file mode 100644
index 0000000000..19a300084a
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-03.js
@@ -0,0 +1,19 @@
+// When the debugger is triggered from different stack frames that happen to
+// occupy the same memory, it delivers different Debugger.Frame objects.
+
+var g = newGlobal({newCompartment: true});
+var dbg = Debugger(g);
+var hits;
+var a = [];
+dbg.onDebuggerStatement = function (frame) {
+    for (var i = 0; i < a.length; i++) 
+        assertEq(a[i] === frame, false);
+    a.push(frame);
+    hits++;
+};
+
+g.eval("function f() { debugger; }");
+g.eval("function h() { debugger; f(); }");
+hits = 0;
+g.eval("for (var i = 0; i < 4; i++) h();");
+assertEq(hits, 8);