1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/testEarlyReturnOnCall.js b/js/src/jit-test/tests/debug/testEarlyReturnOnCall.js
new file mode 100644
index 0000000000..f783f5a1f0
--- /dev/null
+++ b/js/src/jit-test/tests/debug/testEarlyReturnOnCall.js
@@ -0,0 +1,24 @@
+var g = newGlobal({newCompartment: true});
+g.eval("var success = false");
+g.eval("function ponies() {}");
+g.eval("function foo() { ponies(); success = false }");
+
+var dbg = new Debugger(g);
+dbg.onEnterFrame = function(frame) {
+    // The goal here is force an early return on the 'call' instruction,
+    // which should be the 3rd step (callgname, undefined, call)
+    var step = 0;
+    frame.onStep = function() {
+        ++step;
+        if (step == 2) {
+            g.success = true;
+            return;
+        }
+        if (step == 3)
+            return { return: undefined }
+    }
+    frame.onPop = function() { new Error(); /* boom */ }
+}
+
+g.foo();
+assertEq(g.success, true);