Comment 5 for bug 490770

I just tried with a limit of 8GB memory and it reached almost 20000 in:
| Build phase:Adding file contents 20000/50172

I wanted to try again without restraining the memory, so I tried
rune@hilbert:~/test.bzr$ bzr branch ../data testallGB
And since test.bzr is a shared repository it resumed from the 20000/50172, but as far as I could see it did not try to allocate more than 8GB memory when resuming (total system usage was around 2GB), so maybe it would have been able to resume even with the 8GB restraint.
How come?

Can I expect a broken repository when resuming a broken branch this way?