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: Wed, 10 Jul 2013 09:04:54 +0800 From: Chen Gang <gang.chen@...anux.com> To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: [Information] gcc '-O2' may skip some of uninitialized variables warnings (exist almost 10 years). Hell All: gcc '-O2' may skip some of uninitialized variables warnings which may be real bugs. This is gcc issue which keep existence almost 10 years, and now it seems can not be fixed in recent years. Please reference: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18501, for kernel special case, also can reference: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57856 If we want to see the warnings (for finding bugs), "EXTRA_CFLAGS=-W" seems not enough (it use '-O2'), I recommend also to try '-O0' (although it may also print many spurious warnings) Thanks. -- Chen Gang -- 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/
Powered by blists - more mailing lists