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
| ||
|
Date: Tue, 20 Sep 2016 10:07:33 -0700 From: Joe Perches <joe@...ches.com> To: Julia Lawall <julia.lawall@...6.fr> Cc: Dan Carpenter <error27@...il.com>, LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: Possible code defects: macros and precedence On Tue, 2016-09-20 at 15:14 +0200, Julia Lawall wrote: > The semantic patch below finds a binary operator in a macro and a binary > operator in the use of the macro, and checks if the priority of the > operator in the macro is higher (lower number) than the priority of the > operator in the use. If this is the case, it adds parentheses in the use, > which is not what one wants, but serves to show where the problem is Thanks, this works on the trivial example I suggested without an #include I've tried it on trivial files with --recursive-includes and it seems to work there too. I'll investigate some more convoluted uses later. btw: There are ~15K checkpatch MACRO_ARG_PRECEDENCE messages in the -next kernel tree. That's probably too many for a theoretical and likely not an actual problem. cheers, Joe
Powered by blists - more mailing lists