From owner-freebsd-current@FreeBSD.ORG  Wed Mar 17 03:59:31 2004
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To: Ruslan Ermilov <ru@freebsd.org>
References: <20040317040254.386947303A@freebsd-current.sentex.ca>
	<xzpad2fhixn.fsf@dwp.des.no> <20040317113931.GF49920@ip.net.ua>
From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=)
Date: Wed, 17 Mar 2004 12:59:13 +0100
In-Reply-To: <20040317113931.GF49920@ip.net.ua> (Ruslan Ermilov's message of
 "Wed, 17 Mar 2004 13:39:31 +0200")
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cc: ia64@freebsd.org
cc: FreeBSD Tinderbox <tinderbox@freebsd.org>
cc: current@freebsd.org
Subject: Re: [current tinderbox] failure on ia64/ia64
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Ruslan Ermilov <ru@freebsd.org> writes:
> I cannot reproduce it either, but perhaps this is the same reason why
> we still have -Wno-uninitialized in <bsd.sys.mk> for normal WARNS
> levels.

No, we use -Wno-uninitialized because of cases where it is obvious to
humans but not to gcc that a variable is initialized, such as:

    if (foo !=3D NULL)
        bar =3D baz(foo);
    /* some code that doesn't change foo */
    if (foo !=3D NULL)
        printf("%d\n", bar);

If you remove the code between the two ifs, gcc will coalesce them and
realize nothing fishy is going on (unless you compile with -O0).

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no