1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-onPop-generators-04.js b/js/src/jit-test/tests/debug/Frame-onPop-generators-04.js
new file mode 100644
index 0000000000..8e4ea689e6
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-onPop-generators-04.js
@@ -0,0 +1,26 @@
+// Terminating a generator from the onPop callback for its initial yield
+// leaves the Frame in a sane but inactive state.
+
+load(libdir + "asserts.js");
+
+let g = newGlobal({newCompartment: true});
+g.eval("function* f(x) { yield x; }");
+let dbg = new Debugger;
+let gw = dbg.addDebuggee(g);
+
+let genFrame = null;
+dbg.onDebuggerStatement = frame => {
+    dbg.onEnterFrame = frame => {
+        if (frame.callee == gw.getOwnPropertyDescriptor("f").value) {
+            genFrame = frame;
+            frame.onPop = completion => null;
+        }
+    };
+    assertEq(frame.eval("f(0);"), null);
+};
+
+g.eval("debugger;");
+
+assertEq(genFrame instanceof Debugger.Frame, true);
+assertEq(genFrame.onStack, false);
+assertThrowsInstanceOf(() => genFrame.callee, Error);