linux-kernel - unused-variable warning is getting disabled with clang

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Message-ID: <56cef2a644acc458b9457e3147abc4c0@codeaurora.org>
Date:   Wed, 06 Dec 2017 13:24:51 -0800
From:   Sodagudi Prasad <psodagud@...eaurora.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <mmarek@...e.com>,
        Greg Hackmann <ghackmann@...gle.com>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: unused-variable warning is getting disabled with clang

Hi All,

When kernel compiled with clang, following line is disabling the 
unused-variable warning. This is not the case with gcc.
KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)

Are there any specific reasons for disabling unused-variable with clang?

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