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To:     Joe Perches <joe@perches.com>, Kees Cook <keescook@chromium.org>,
        Nick Desaulniers <ndesaulniers@google.com>
Cc:     linux-kernel@vger.kernel.org
From:   Christophe Leroy <christophe.leroy@c-s.fr>
Subject: Conflict between sparse and commit cafa0010cd51f ("Raise the minimum
 required gcc version to 4.6")
Message-ID: <81a5fd11-366c-0897-4143-d8d041420a41@c-s.fr>
Date:   Fri, 7 Sep 2018 12:22:07 +0000
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Since commit cafa0010cd51f ("Raise the minimum required gcc version to 
4.6"), sparse check fails as follows:

[root@pc16082vm linux-powerpc]# make C=2 arch/powerpc/kernel/process.o
   CALL    scripts/checksyscalls.sh
   CHECK   scripts/mod/empty.c
./include/linux/compiler-gcc.h:14:3: error: Sorry, your compiler is too 
old - please upgrade it.
   CHECK   arch/powerpc/kernel/process.c
./include/linux/compiler-gcc.h:14:3: error: Sorry, your compiler is too 
old - please upgrade it.


I have sparse version 0.5.2

What can be done to fix that ?

Christophe