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Message-ID: <51536516.6060403@linux.vnet.ibm.com>
Date: Wed, 27 Mar 2013 17:31:02 -0400
From: Corey Bryant <coreyb@...ux.vnet.ibm.com>
To: Russ Allbery <rra@...nford.edu>
CC: oss-security@...ts.openwall.com
Subject: Re: Security vulnerability tools
On 03/27/2013 04:31 PM, Russ Allbery wrote:
> Corey Bryant <coreyb@...ux.vnet.ibm.com> writes:
>
>> Clang
>> -----
>> Static analysis tool for C/C++
>
> Clang is, properly speaking, a compiler. It happens to also have a static
> analyzer available as part of the same code base.
>
> If you're going to mention Clang, it's probably also pointing out that
> good old GCC has very extensive warning flags that can, among other
> things, find possible security vulnerabilities by locating variables that
> are used before being set, dangerous printf formats, mismatches between
> printf formats and arguments, and so forth. For example, I currently use:
>
> WARNINGS = -g -O -D_FORTIFY_SOURCE=2 -Wall -Wextra -Wendif-labels \
> -Wformat=2 -Winit-self -Wswitch-enum -Wdeclaration-after-statement \
> -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-align \
> -Wwrite-strings -Wjump-misses-init -Wlogical-op \
> -Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls \
> -Wnested-externs -Werror
>
> with GCC (4.6 or later) with all of my software. Many of those are not
> security-related, of course, but -Wformat=2 certainly is, and some of the
> -Wall and -Wextra warnings are as well.
>
Great, thanks for the input. I don't see any reason to not include gcc
warning options.
--
Regards,
Corey Bryant
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