diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Frame-onPop-21.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Frame-onPop-21.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+// frame.eval works from an onPop handler.
+var g = newGlobal();
+g.eval('function f(a,b) { var x = "entablature", y; debugger; return x+y+a+b; }');
+
+var dbg = new Debugger(g);
+var log;
+
+dbg.onDebuggerStatement = function handleDebugger(frame) {
+    log += 'd';
+    frame.onPop = handlePop;
+};
+
+function handlePop(c) {
+    log += ')';
+
+    // Arguments must be live.
+    assertEq(this.eval('a').return, 'frieze');
+    assertEq(this.eval('b = "architrave"').return, 'architrave');
+    assertEq(this.eval('arguments[1]').return, 'architrave');
+    assertEq(this.eval('b').return, 'architrave');
+
+    // function-scope variables must be live.
+    assertEq(this.eval('x').return, 'entablature');
+    assertEq(this.eval('y = "cornice"').return, 'cornice');
+    assertEq(this.eval('y').return, 'cornice');
+}
+
+log = '';
+g.eval('f("frieze", "stylobate")');
+assertEq(log, 'd)');