From: Nathan Sidwell <nathan@codesourcery.com>
To: Dmitry Antipov <antipov@dev.rtsoft.ru>
Cc: gcc@gcc.gnu.org
Subject: Re: Dubious "'foo' might be used uninitialized in this function" message
Date: Tue, 14 Dec 2004 17:00:00 -0000 [thread overview]
Message-ID: <41BF1C0A.6060100@codesourcery.com> (raw)
In-Reply-To: <41BF1207.2040102@dev.rtsoft.ru>
Dmitry Antipov wrote:
> w.c: In function `f':
> w.c:5: warning: 'z' might be used uninitialized in this function
>
> which is not true.
'tis true too, just here.
return x + y + z;
read the documentation for -Wuninitialized, which will explain
why it can't get all the cases correct.
> Is it reasonable to learn GCC do more analysis in attempt to avoid
> warning in this case ? How is it complex ?
it gets as complex as the halting problem :)
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery LLC
nathan@codesourcery.com :: http://www.planetfall.pwp.blueyonder.co.uk
next prev parent reply other threads:[~2004-12-14 17:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-14 15:23 Dmitry Antipov
2004-12-14 16:40 ` E. Weddington
2004-12-14 17:00 ` Nathan Sidwell [this message]
2004-12-15 9:00 ` Dmitry Antipov
2004-12-15 10:02 ` Nathan Sidwell
2004-12-15 12:06 ` Robert Dewar
2004-12-15 17:33 ` Joe Buck
2004-12-15 18:03 ` Dave Korn
2004-12-15 18:09 ` Robert Dewar
2004-12-15 17:33 ` Florian Weimer
2004-12-15 17:34 ` Robert Dewar
2004-12-15 17:52 ` Florian Weimer
2004-12-15 18:00 ` Robert Dewar
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