107     JSGlobalObject*& headObject = head();  in ~JSGlobalObject()  local
108     if (headObject == this)  in ~JSGlobalObject()
109         headObject = d()->next;  in ~JSGlobalObject()
110     if (headObject == this)  in ~JSGlobalObject()
111         headObject = 0;  in ~JSGlobalObject()
134     if (JSGlobalObject*& headObject = head()) {  in init()  local
135         d()->prev = headObject;  in init()
136         d()->next = headObject->d()->next;  in init()
137         headObject->d()->next->d()->prev = this;  in init()
138         headObject->d()->next = this;  in init()
140         headObject = d()->next = d()->prev = this;  in init()