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

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Message-ID: <AANLkTi=zYzbz2cGXc-XWnF_vDk-4e4Qv+aUMROscrJHx@mail.gmail.com>
Date:	Thu, 13 Jan 2011 00:53:44 -0700
From:	Jeffrey Merkey <jeffmerkey@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: gcc NULL strings passed from ternary operators in kernel modules

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
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