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From: Segher Boessenkool <segher@kernel.crashing.org>
To: Joel Stanley <joel@jms.id.au>
Cc: linuxppc-dev@lists.ozlabs.org,
	Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH] powerpc/math-emu: Fix building with clang
Date: Mon, 12 Nov 2018 06:43:04 -0600	[thread overview]
Message-ID: <20181112124302.GI23873@gate.crashing.org> (raw)
In-Reply-To: <CACPK8XcPxOot2-Abn-o0-5ECyz6KfmkUfKSh6L5+pok7eNtCFQ@mail.gmail.com>

On Mon, Nov 12, 2018 at 10:03:34PM +1030, Joel Stanley wrote:
> arch/powerpc/math-emu/fnmsub.c:46:2: error: invalid use of a cast in a
> inline asm context requiring an l-value: remove
>       the cast or build with -fheinous-gnu-extensions

...

> ./arch/powerpc/include/asm/sfp-machine.h:283:27: note: expanded from
> macro 'sub_ddmmss'
>                : "=r" ((USItype)(sh)),                                  \
>                        ~~~~~~~~~~^~~

This was fixed in GCC over 16 years ago ( https://gcc.gnu.org/r56600 ),
and in GMP (where it comes from) presumably before that.

There are many projects around which still have old GMP snippets in
them.  Like, the Linux kernel for powerpc, or GCC for x86!


Segher

  reply	other threads:[~2018-11-12 12:45 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-02  3:37 [PATCH] powerpc/math-emu: Fix building with clang Joel Stanley
2018-11-02 16:54 ` Nick Desaulniers
2018-11-12 11:33   ` Joel Stanley
2018-11-12 12:43     ` Segher Boessenkool [this message]
2018-11-12 19:17     ` Nick Desaulniers
2018-11-02 17:34 ` Segher Boessenkool
2018-11-02 17:38   ` Nick Desaulniers
2018-11-02 18:44     ` Segher Boessenkool

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