Date: Wed, 27 Mar 2013 13:31:35 -0700 From: Russ Allbery <rra@...nford.edu> To: oss-security@...ts.openwall.com Cc: kernel-hardening@...ts.openwall.com Subject: Re: Security vulnerability tools 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. -- Russ Allbery (rra@...nford.edu) <http://www.eyrie.org/~eagle/>
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