On Tue, 2015-07-14 at 13:08 -0500, David Lehman wrote:
Otherwise, if no size was passed in, the size will be Size(0) when the format gets set, which is problematic for formats with a minimum size.
I hit this bug and came up with basically the same diagnosis (didn't realize David had already looked into it):
https://bugzilla.redhat.com/show_bug.cgi?id=1243106
I just tested this patch with an updates.img and it works, so ACK from me. I'm no expert but from what I saw while figuring out the bug, I don't *think* this should have any unintended consequences.