[RFC] Make _FILE_OFFSET_BITS=64 default.

[Rich Felker]

On Thu, Mar 13, 2014 at 11:55:55PM -0700, Russ Allbery wrote:
> Mike Frysinger <vapier@gentoo.org> writes:
> 
> > i'm debating adding it to the next Gentoo glibc version to gather some
> > actual data since no one seems to want to move w/out data, but no one
> > wants to gather data either.
> 
> The change will definitely break INN, which uses off_t in on-disk data
> structures.  (A bad design decision made years ago and never properly
> expunged.)  That said, it's already the case that INN built with
> large-file support and without uses incompatible data structures and
> whether to do so is a standard compile-time option, so distributions are
> already aware of this problem and are already dealing with it in some
> fashion, and INN could be changed to undefine the relevant macros if
> configured to *not* have large file support (instead of what it does
> now).

Do you have a link to INN? The name isn't exactly googlable... In any
case, they probably should just deprecate the non-64-bit build since
other things are likely broken too (e.g. if they use stat) and add
automatic file format conversion if they don't already have it..

Rich