linux-kernel - Re: double exclamation (!!) suckage in the kernel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <a781481a0705251332q6a3d4e24xefe999ebfdd437bc@mail.gmail.com>
Date:	Sat, 26 May 2007 02:02:56 +0530
From:	"Satyam Sharma" <satyam.sharma@...il.com>
To:	"Satyam Sharma" <satyam.sharma@...il.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: double exclamation (!!) suckage in the kernel

On 5/26/07, Russell King <rmk+lkml@....linux.org.uk> wrote:
> On Sat, May 26, 2007 at 01:53:59AM +0530, Satyam Sharma wrote:
> > Are all these occurrences merely the debris of
> > s/something/!notsomething/g kind of patches or is there some
> > dark, unknown C / gcc wizardry I have absolutely no clue of?
>
> Try building and running this:
>
> #include <stdio.h>
> int main()
> {
>         int i;
>         for (i = 0; i < 10; i++)
>                 printf("%d: %d\n", i, !!i);
>         return 0;
> }
>
> and you should see it's effect.

Ah, yes, of course I see now!

Thanks!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/