On Mon, Sep 26, 2005 at 07:05:28PM -0400, Tom Lane wrote: > "Qingqing Zhou" <[EMAIL PROTECTED]> writes: > > ""Jim C. Nasby"" <[EMAIL PROTECTED]> wrote > >> If a database is created with a 64 bit version of initdb, would a 32bit > >> backend be able to talk to it? Likewise, would a backend compiled by a > >> different compiler be able to? > > > The key problem I believe is the serials of ALIGNOF macros. Especially for > > MAX_ALIGNOF. Different Hardware/OS/compiler will have different > > understanding of it. > > Yeah. It might be worth adding MAX_ALIGNOF to the set of configuration > data stored in pg_control, just to be sure you couldn't shoot yourself > in the foot that way.
PLEASE. :) ISTM that 64 bit is becomming much more common, so I think the odds of someone going from a 32 to 64 bit (or vice-versa) version of PostgreSQL on the same machine is much larger now than it has been in the past. I think we really need to protect this as much as possible. This isn't so much a foot-gun as a foot-nuclear-weapon. Would I be correct in assuming that doing this for 8.1 would require another initdb? :/ For something as minor as this, would it be reasonable to ship a utility to avoid the initdb? I'd very much like to see this in 8.1... -- Jim C. Nasby, Sr. Engineering Consultant [EMAIL PROTECTED] Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461 ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
