1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Environment-optimizedOut-01.js b/js/src/jit-test/tests/debug/Environment-optimizedOut-01.js
new file mode 100644
index 0000000000..964148af9a
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Environment-optimizedOut-01.js
@@ -0,0 +1,44 @@
+// Optimized out scopes should be considered optimizedOut.
+
+var g = newGlobal({newCompartment: true});
+var dbg = new Debugger;
+dbg.addDebuggee(g);
+
+g.eval("" + function f() {
+  var x = 42;
+  {
+    let y = 43;
+    (function () { })();
+  }
+});
+
+dbg.onEnterFrame = function (f) {
+  if (f.callee && (f.callee.name === undefined)) {
+    blockenv = f.environment.parent;
+    assertEq(blockenv.optimizedOut, true);
+    assertEq(blockenv.inspectable, true);
+    assertEq(blockenv.type, "declarative");
+    assertEq(blockenv.calleeScript, null);
+    assertEq(blockenv.names().indexOf("y") !== -1, true);
+
+    funenv = blockenv.parent;
+    assertEq(funenv.optimizedOut, true);
+    assertEq(funenv.inspectable, true);
+    assertEq(funenv.type, "declarative");
+    assertEq(funenv.calleeScript, f.older.script);
+    assertEq(funenv.names().indexOf("x") !== -1, true);
+
+    globalenv = funenv.parent.parent;
+    assertEq(globalenv.optimizedOut, false);
+    assertEq(globalenv.inspectable, true);
+    assertEq(globalenv.type, "object");
+    assertEq(globalenv.calleeScript, null);
+
+    dbg.removeDebuggee(g);
+
+    assertEq(blockenv.inspectable, false);
+    assertEq(funenv.inspectable, false);
+  }
+}
+
+g.f();