linux-kernel - TRACE_BRANCH_PROFILING breaks gcc warnings

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Message-Id: <1239748090.4205.26.camel@johannes.local>
Date:	Wed, 15 Apr 2009 00:28:10 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Ingo Molnar <mingo@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <srostedt@...hat.com>
Subject: TRACE_BRANCH_PROFILING breaks gcc warnings

With TRACE_BRANCH_PROFILING enabled you get "dummy may be used
uninitialised" with code like the following (and gcc 4.3.3):

void *dummy, *c;

if (a && (dummy = b()))
	c = dummy;

Therefore, allyesconfig has become useless for looking at warnings.

:(

johannes


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