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Re: fix for strict-alias warnings

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Manfred Spraul <manfred(at)colorfullife(dot)com>,Andrew Dunstan <andrew(at)dunslane(dot)net>,"Patches (PostgreSQL)" <pgsql-patches(at)postgresql(dot)org>
Subject: Re: fix for strict-alias warnings
Date: 2003-10-14 20:01:32
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackerspgsql-patches
Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > OK, what gcc versions support -fno-strict-aliasing?  Do we need a
> > configure test for it?
> Perhaps ... although it is recognized in 2.95.3 and probably for a good
> ways before that.
> It looks to me like what has changed in gcc 3.3 is not the existence
> of the flag, but the fact that -O2 now turns it on where it did not
> before.

Right.  I am just not sure how old our gcc compilers are in the field. 
We can do it unconditionally and wait for a failure report.

  Bruce Momjian                        |
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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