From: joy <gracecott@sancharnet.in>
To: linux-c-programming@vger.kernel.org
Subject: Re: array size 1 ? All headers
Date: Wed, 21 Jul 2004 08:47:11 +0530 [thread overview]
Message-ID: <40FDE037.6080309@sancharnet.in> (raw)
In-Reply-To: <20040720235713.4cb83b20.lcapitulino@terra.com.br>
Luiz Fernando N. Capitulino wrote:
> The program:
>
> char tst[1];
> tst[0]='g';
> tst[1]='r';
>
> printf("%c %c\n", tst[0], tst[1]);
>
> compiles and works here! but to be honest, I don't why. I can prove it is
>an odd case, becase this also works (here):
>
>
>
correct me if I'm wrong, but I feel that the code you have written is
the classic case of a buffer overflow.
C , (I think) , does not check for array boundaries and leaves this work
to be done by the programmer.
this is the basis of all those nasty worms running free!
> char tst[1];
> tst[0]='g';
> tst[1]='r';
> tst[2]='z';
>
> printf("%c %c %c\n", tst[0], tst[1], tst[2]);
>
>PS: GCC compiled.
>
>
>
next prev parent reply other threads:[~2004-07-21 3:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-21 2:27 array size 1 ? All headers Gre Taguran
2004-07-21 2:57 ` Luiz Fernando N. Capitulino
2004-07-21 3:17 ` joy [this message]
2004-07-21 12:10 ` Luiz Fernando N. Capitulino
2004-07-21 3:18 ` Eric Bambach
2004-07-21 3:19 ` canbaby
2004-07-21 3:38 ` Glynn Clements
[not found] ` <200407202217.43875.eric@cisu.net>
2004-07-21 12:07 ` Luiz Fernando N. Capitulino
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