Daniel Barkalow added the comment:
I think it would be helpful to have something as troubleshooting information on
the garbage collector. If you've got a bug in your C module, it's obvious that
you shouldn't be doing something egregiously wrong, but it's not obvious what
you might have done
New submission from Daniel Barkalow :
Nothing in the documentation gives you enough information to find what you're
doing wrong if you have the following bug for an object tracked by the GC: (a)
you store a borrowed reference to an object whose lifetime is always longer
that the buggy object
