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 // Environments of different instances of the same generator have the same

 // callee. I love this job.

 var g = newGlobal();

 var dbg = new Debugger;

 var gw = dbg.addDebuggee(g);

 function check(gen, label) {

   print("check(" + label + ")");

   var hits;

   dbg.onDebuggerStatement = function (frame) {

     hits++;

     var env = frame.environment;

     assertEq(env.callee, gw.makeDebuggeeValue(g.f));

   };

   hits = 0;

   gen.next();

   assertEq(hits, 1);

 }

 g.eval('function f(x) { debugger; yield x; }');

 g.eval('var g = f(2);');

 g.eval('var h = f(3);');

 check(g.g, 'g.g');

 check(g.h, 'g.h');

 g.eval('function* f(x) { debugger; yield x; }');

 g.eval('var g = f(2);');

 g.eval('var h = f(3);');

 check(g.g, 'g.g');

 check(g.h, 'g.h');