linux-kernel - [UPDATE] gcc NULL strings passed from ternary operators in kernel modules

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <AANLkTim+fY4jUoE_8zVkZ2xxZ+nT3_SeMrOvwW6714z9@mail.gmail.com>
Date:	Thu, 13 Jan 2011 00:56:39 -0700
From:	Jeffrey Merkey <jeffmerkey@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [UPDATE] gcc NULL strings passed from ternary operators in kernel modules

might help if my examples are correct -- geez...

interesting case with gcc.  The following code example:

printk("%s\n", (value & 1) ? "set": "clear");

will evaluate to NULL unless the ":" character has a space after
static string declaration.

this version

printk("%s\n", (value & 1) ? "set" : "clear");

works.

go figure.   Looks like gcc assumes this case is a C++ construct of
some sort and
evaluates it to NULL.

Jeff
--
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/