Date: Sat, 17 Feb 2018 08:32:34 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Jan Beich <jbeich@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r329371 - head/sys/compat/linuxkpi/common/include/asm Message-ID: <6f790c90-8c65-ab0b-4a58-2814be55f09f@selasky.org> In-Reply-To: <mv08-30rc-wny@FreeBSD.org> References: <201802161520.w1GFKLiA049085@repo.freebsd.org> <mv08-30rc-wny@FreeBSD.org>
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On 02/17/18 01:42, Jan Beich wrote: > Hans Petter Selasky <hselasky@FreeBSD.org> writes: > >> Author: hselasky >> Date: Fri Feb 16 15:20:21 2018 >> New Revision: 329371 >> URL: https://svnweb.freebsd.org/changeset/base/329371 >> >> Log: >> Allow the cmpxchg() macro in the LinuxKPI to work on pointers without >> generating compiler warnings, -Wint-conversion . > [...] > > To generate errors instead ? > > $ make clean all -C /usr/ports/graphics/drm-next-kmod > [...] > drm_lock.c:72:10: error: flexible array member 'u8' in a union is not allowed > prev = cmpxchg(lock, old, new); > ^ I believe this is a regression issue in GCC: https://gcc.gnu.org/ml/gcc-patches/2016-07/msg01505.html --HPS
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