michael@0: // Bug 689101 - if the binary layout of jsval does not match between C and C++
michael@0: // code, then calls to functions returning jsval may get compiled differently
michael@0: // than the callee, resulting in parameters being shifted over by one.
michael@0: //
michael@0: // An example is where on Windows, calling jsdValue.getWrappedValue() will
michael@0: // return a random floating point number instead of an object.
michael@0: //
michael@0: // This test must be run with debugging already enabled
michael@0: 
michael@0: function run_test() {
michael@0:     const Cc = Components.classes;
michael@0:     const Ci = Components.interfaces;
michael@0:     const DebuggerService = Cc["@mozilla.org/js/jsd/debugger-service;1"];
michael@0:     const jsdIDebuggerService = Ci.jsdIDebuggerService;
michael@0:     var jsd = DebuggerService.getService(jsdIDebuggerService);
michael@0: 
michael@0:     do_check_true(jsd.isOn);
michael@0: 
michael@0:     var n = 0;
michael@0:     function f() {
michael@0:         n++;
michael@0:     }
michael@0: 
michael@0:     jsd.enumerateScripts({ enumerateScript: function(script) {
michael@0:         script.setBreakpoint(0);
michael@0:     } });
michael@0: 
michael@0:     jsd.breakpointHook = function(frame, type, dummy) {
michael@0:         var scope = frame.scope;
michael@0:         var parent = scope.jsParent; // Probably does not need to be called
michael@0:         var wrapped = scope.getWrappedValue();
michael@0:         // Do not try to print 'wrapped'; it may be an internal Call object
michael@0:         // that will crash when you toString it. Different bug.
michael@0:         do_check_eq(typeof(wrapped), "object");
michael@0:         return Ci.jsdIExecutionHook.RETURN_CONTINUE;
michael@0:     };
michael@0: 
michael@0:     f();
michael@0: 
michael@0:     jsd.breakpointHook = null;
michael@0:     jsd = null;
michael@0: }