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 // We don't record introduction scripts in a different global from the

 // introduced script, even if they're both debuggees.

 var dbg = new Debugger;

 var g1 = newGlobal();

 g1.g1 = g1;

 var g1DO = dbg.addDebuggee(g1);

 var g2 = newGlobal();

 g2.g1 = g1;

 var log = '';

 dbg.onDebuggerStatement = function (frame) {

   log += 'd';

   assertEq(frame.script.source.introductionScript, undefined);

   assertEq(frame.script.source.introductionOffset, undefined);

 };

 g2.eval('g1.eval("debugger;");');

 assertEq(log, 'd');

 // Just for sanity: when it's not cross-global, we do note the introducer.

 log = '';

 dbg.onDebuggerStatement = function (frame) {

   log += 'd';

   assertEq(frame.script.source.introductionScript instanceof Debugger.Script, true);

   assertEq(typeof frame.script.source.introductionOffset, "number");

 };

 // Exactly as above, but with g1 instead of g2.

 g1.eval('g1.eval("debugger;");');

 assertEq(log, 'd');