On Wed, Oct 09, 2019 at 04:44:20PM -0700, Jonathan Tan wrote:

Whenever we make a struct base_data, immediately calculate its delta
children. This eliminates confusion as to when the
{ref,ofs}_{first,last} fields are initialized.

That _seems_ like a good idea, but I'm a little worried just because I
don't entirely understand why it was being done lazily before. If you've
puzzled all that out, it would be nice to make the argument in the
commit message.

-Peff