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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/55896] Annoying compiler warning
Date: Tue, 18 Mar 2014 11:21:00 -0000	[thread overview]
Message-ID: <bug-55896-4-c1QFLLfzNj@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-55896-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55896

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think there's a bug in the program.  We inline w_strlen function.  Now, if
buffer is NULL, we don't compute w_strlen, as the result is 0.  But since the
call to strncat is strncat(content_2, content_1, w_strlen(content_1) - 1);, we
pass -1 as n to strncat, which is casted to size_t, that means we end up with
__builtin___strncat_chk (&content_2, &content_1, 18446744073709551615, 1024);.


  reply	other threads:[~2014-03-18 11:21 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-07 13:48 [Bug c/55896] New: " sworddragon2 at aol dot com
2014-03-18 11:21 ` mpolacek at gcc dot gnu.org [this message]
2014-03-18 11:38 ` [Bug c/55896] " jakub at gcc dot gnu.org
2014-03-18 12:11 ` jakub at gcc dot gnu.org
2014-03-18 13:57 ` mpolacek at gcc dot gnu.org

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