Chinmoy Chakraborty <chinmoy12c@xxxxxxxxx> writes: > Is it safe to make this assumption? It was the question I asked, and I didn't see a reason to believe it is safe. > I mean to be completely sure of this, one would have to track back > to all the callers. Yes. If we audit the callers to make sure istate->repo always points at the right repository, add missing assignment to istate->repo as necessary, and add if (!istate->repo) BUG("caller of cache_tree_udpate() did not fill istate->repo"); then that would be an improvement. But... > Should a check like: > > if(!istate->repo) > > istate->repo = the_repository; > > be required? ... if we add such an "if the caller did not set istate->repo, assume the_repository" code, then the resulting code explicitly assumes that the istate the caller passed to us without setting istate->repo belongs to the default repository. I do not quite see the point of such a change---it is not all that better than "implicit dependency on the_repository" the patch tries to address, is it?