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Date:      Sun, 09 Feb 2003 06:42:32 -0800
From:      Terry Lambert <tlambert2@mindspring.com>
To:        "Jacques A. Vidrine" <nectar@FreeBSD.org>
Cc:        David Schultz <dschultz@uclink.berkeley.edu>, Ray Kohler <ataraxia@cox.net>, freebsd-current@FreeBSD.ORG
Subject:   Re: Compiling with high optimization?
Message-ID:  <3E4668D8.72B6279E@mindspring.com>
References:  <20030208173756.GA56030@arkadia.nv.cox.net> <20030208232724.GA20435@HAL9000.homeunix.com> <3E459BF3.BB3FC381@mindspring.com> <20030209002542.GA20812@HAL9000.homeunix.com> <3E45AD75.47C80368@mindspring.com> <20030209140357.GB67612@opus.celabo.org>

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"Jacques A. Vidrine" wrote:
> On Sat, Feb 08, 2003 at 05:23:01PM -0800, Terry Lambert wrote:
> > The compiler
> > didn't complain when he checked it before committing it because
> > optimization was off by default; it should have complained, e.g.:
>   ^^^^^^^^^^^^
> Is that really what you meant?  I don't believe it has anything to
> do with optimization; rather, it is to do with lack of `warning'
> flags.  For example, if you build libc with WARNS=5 (so as to get the
> `-Wuninitialized' flag), then you get this warning.
> 
> >     "x.c:9:warning: `foo' might be used uninitialized in this function"

Uh...

	cc -Wall -Wuninitialized -O0 x.c
	"cc1: warning: -Wuninitialized is not supported without -O"

8-) 8-).

-- Terry

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