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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