Index: test/mjsunit/es6/generators-relocation.js |
diff --git a/test/mjsunit/es6/generators-relocation.js b/test/mjsunit/es6/generators-relocation.js |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2636f52d7b9eeb46a18a4c607324e04f53a3745e |
--- /dev/null |
+++ b/test/mjsunit/es6/generators-relocation.js |
@@ -0,0 +1,61 @@ |
+// Copyright 2014 the V8 project authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+// Flags: --expose-debug-as debug |
+ |
+var Debug = debug.Debug; |
+ |
+function assertIteratorResult(value, done, result) { |
+ assertEquals({value: value, done: done}, result); |
+} |
+ |
+function RunTest(formals_and_body, args, value1, value2) { |
+ // A null listener. It isn't important what the listener does. |
+ function listener(event, exec_state, event_data, data) { |
+ } |
+ |
+ // Create the generator function outside a debugging context. It will probably |
+ // be lazily compiled. |
+ var gen = (function*(){}).constructor.apply(null, formals_and_body); |
+ |
+ // Instantiate the generator object. |
+ var obj = gen.apply(null, args); |
+ |
+ // Advance to the first yield. |
+ assertIteratorResult(value1, false, obj.next()); |
+ |
+ // Enable the debugger, which should force recompilation of the generator |
+ // function and relocation of the suspended generator activation. |
+ Debug.setListener(listener); |
+ |
+ // Add a breakpoint on line 3 (the second yield). |
+ var bp = Debug.setBreakPoint(gen, 3); |
+ |
+ // Check that the generator resumes and suspends properly. |
+ assertIteratorResult(value2, false, obj.next()); |
+ |
+ // Disable debugger -- should not force recompilation. |
+ Debug.clearBreakPoint(bp); |
+ Debug.setListener(null); |
+ |
+ // Run to completion. |
+ assertIteratorResult(undefined, true, obj.next()); |
+} |
+ |
+function prog(a, b, c) { |
+ return a + ';\n' + 'yield ' + b + ';\n' + 'yield ' + c; |
+} |
+ |
+// Simple empty local scope. |
+RunTest([prog('', '1', '2')], [], 1, 2); |
+ |
+RunTest([prog('for (;;) break', '1', '2')], [], 1, 2); |
+ |
+RunTest([prog('while (0) foo()', '1', '2')], [], 1, 2); |
+ |
+RunTest(['a', prog('var x = 3', 'a', 'x')], [1], 1, 3); |
+ |
+RunTest(['a', prog('', '1', '2')], [42], 1, 2); |
+ |
+RunTest(['a', prog('for (;;) break', '1', '2')], [42], 1, 2); |