object-references
The `object-references` function is intended to support debugging of memory leaks by providing a mapping from each live object to the object that retained it. original commit: 61f6602b7e6c388c529f3c5995dcf71a7c42e005
7.ss, scheme.1.in, comments of many files original commit: 06f858f9a505b9d6fb6ca1ac97234927cb2dc641
original commit: 47a210c15c63ba9677852269447bd2f2598b51fe