> | it's an ABI change and needs versioning, IMO.
> 
> I don't think that this or the previous behavior was specified in the API.
> [i.e. both behaviors are valid, and programs should not depend on either]
> Yes, there were bugs found in 3 programs after this change was introduced,
> but it is kind of late now to do the version bump.
> 
> christos

why too late?
it's entirely possible that someone updates his libraries tomorrow
and suffers from the incompatibility.

YAMAMOTO Takashi