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From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Ramsay Jones" <ramsay@ramsayjones.plus.com>,
	"Đoàn Trần Công Danh" <congdanhqx@gmail.com>,
	git@vger.kernel.org, linux-sparse@vger.kernel.org
Subject: Re: [PATCH 1/4] C: s/0/NULL/ for pointer type
Date: Thu, 14 May 2020 23:37:10 +0200	[thread overview]
Message-ID: <20200514213710.vxm6vrkggdfad6kd@ltop.local> (raw)
In-Reply-To: <xmqqd07xem9l.fsf@gitster.c.googlers.com>

On Thu, Apr 23, 2020 at 05:54:30PM -0700, Junio C Hamano wrote:
> Ramsay Jones <ramsay@ramsayjones.plus.com> writes:
> 
> > Actually, I have a patch somewhere which suppressed the sparse warning
> > for the '= { 0 }' token sequence used in these initializations. However,
> > I don't seem to be able to find them at the moment! :(
> 
> AHHHHHhhhhhhhh.  
> 
> Thanks for reminding.  Yeah, I recall that the concensus of those
> who were vocal in that old discussion [*1*] was that "= { 0 }"
> should be taken as an idiom and should not be subject to s/0/NULL/
> conversion.
> 
> > [Luc, this topic came up on the sparse and kernel mailing-lists at one
> > point, but I didn't get around to posting my patch to the list - something
> > came up. Hopefully, I will find some time to find it and post it soon.]
> 
> 
> [References]
> 
> *1*
> 
> https://lore.kernel.org/git/e6796c60-a870-e761-3b07-b680f934c537@ramsayjones.plus.com/

Sorry for the late reply.

I hadn't seen this old discussion but I vaguely remember 2 emails about
this problem, probaly on lkml, without a real discussion, but where the
opinion was the opposite.

Personally, I prefer '= { }' but yes it's not legit and it seems that
some compilers don't like it. I'll be glad to add an option to Sparse
to shut up the warnings now given by '{ 0 }'.

-- Luc

  parent reply	other threads:[~2020-05-14 21:37 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-23 13:47 [PATCH 0/4] fix make sparse warning Đoàn Trần Công Danh
2020-04-23 13:47 ` [PATCH 1/4] C: s/0/NULL/ for pointer type Đoàn Trần Công Danh
2020-04-24  0:39   ` Ramsay Jones
2020-04-24  0:54     ` Junio C Hamano
2020-04-24  1:09       ` Danh Doan
2020-04-24  1:54         ` Junio C Hamano
2020-05-14 21:37       ` Luc Van Oostenryck [this message]
2020-04-23 13:47 ` [PATCH 2/4] compat/regex: silence `make sparse` warning Đoàn Trần Công Danh
2020-04-24  0:51   ` Ramsay Jones
2020-04-24  1:04     ` Danh Doan
2020-04-23 13:47 ` [PATCH 3/4] graph.c: limit linkage of internal variable Đoàn Trần Công Danh
2020-04-24  0:52   ` Ramsay Jones
2020-04-23 13:47 ` [PATCH 4/4] progress.c: silence cgcc suggestion about internal linkage Đoàn Trần Công Danh
2020-04-24  0:58   ` Ramsay Jones
2020-04-24  5:54     ` Jeff King
2020-04-23 13:47 ` [PATCH 5/4] fmt-merge-msg.c: fix `make sparse` on next Đoàn Trần Công Danh
2020-04-23 23:10 ` [PATCH 0/4] fix make sparse warning Ramsay Jones
2020-04-23 23:58   ` Danh Doan
2020-04-24 16:38     ` Ramsay Jones
2020-04-24 15:12 ` [PATCH v2 0/4] Fix Sparse Warning Đoàn Trần Công Danh
2020-04-24 15:12   ` [PATCH v2 1/4] test-parse-pathspec-file.c: s/0/NULL/ for pointer type Đoàn Trần Công Danh
2020-04-24 15:12   ` [PATCH v2 2/4] compat/regex: include alloca.h before undef it Đoàn Trần Công Danh
2020-04-24 16:56     ` Ramsay Jones
2020-04-24 17:09       ` Danh Doan
2020-04-24 18:29         ` Ramsay Jones
2020-04-24 22:34           ` Danh Doan
2020-04-25 20:28             ` Ramsay Jones
2020-04-26  0:54               ` Danh Doan
2020-04-26  1:10                 ` Danh Doan
2020-04-26 16:17                 ` Ramsay Jones
2020-04-26 19:38                   ` Ramsay Jones
2020-04-26 22:37                     ` Junio C Hamano
2020-04-27  1:08                   ` Danh Doan
2020-04-27 16:28                     ` Ramsay Jones
2020-04-27 16:46                       ` Danh Doan
2020-04-27 17:21                         ` Ramsay Jones
2020-04-24 15:12   ` [PATCH v2 3/4] graph.c: limit linkage of internal variable Đoàn Trần Công Danh
2020-04-24 15:12   ` [PATCH v2 4/4] progress.c: silence cgcc suggestion about internal linkage Đoàn Trần Công Danh
2020-04-24 16:40   ` [PATCH v2 0/4] Fix Sparse Warning Ramsay Jones
2020-04-25 13:13 ` [PATCH 0/4] fix make sparse warning Johannes Schindelin
2020-04-26  3:32   ` Danh Doan
2020-04-26 16:24     ` Ramsay Jones
2020-05-01 20:02       ` Johannes Schindelin
2020-04-27 14:22 ` [PATCH v3 0/4] Partial fix `make sparse` Đoàn Trần Công Danh
2020-04-27 14:22   ` [PATCH v3 1/4] test-parse-pathspec-file.c: s/0/NULL/ for pointer type Đoàn Trần Công Danh
2020-04-27 14:22   ` [PATCH v3 2/4] compat/regex: move stdlib.h up in inclusion chain Đoàn Trần Công Danh
2020-04-27 16:41     ` Ramsay Jones
2020-04-27 14:22   ` [PATCH v3 3/4] graph.c: limit linkage of internal variable Đoàn Trần Công Danh
2020-04-27 14:22   ` [PATCH v3 4/4] progress.c: silence cgcc suggestion about internal linkage Đoàn Trần Công Danh
2020-05-01 20:09     ` Johannes Schindelin
2020-04-27 16:35   ` [PATCH v3 0/4] Partial fix `make sparse` Ramsay Jones

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