From: Junio C Hamano <gitster@pobox.com>
To: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Cc: avarab@gmail.com, git@vger.kernel.org, sunshine@sunshineco.com,
szeder.dev@gmail.com
Subject: Re: [PATCH] parse-options: fix SunCC compiler warning
Date: Mon, 10 Dec 2018 15:36:54 +0900 [thread overview]
Message-ID: <xmqqy38xkhvd.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20181209102724.8707-1-pclouds@gmail.com> (=?utf-8?B?Ik5ndXk=?= =?utf-8?B?4buFbiBUaMOhaSBOZ+G7jWM=?= Duy"'s message of "Sun, 9 Dec 2018 11:27:24 +0100")
Nguyễn Thái Ngọc Duy <pclouds@gmail.com> writes:
> The compiler reports this because show_gitcomp() never actually
> returns a value:
>
> "parse-options.c", line 520: warning: Function has no return
> statement : show_gitcomp
>
> The function calls exit() and will never return. Update and mark it
> NORETURN.
Yuck. This should do for now, but I am not impressed by the choice
to hook show_gitcomp() call into parse_options_step(), which forces
such an abnormal exit deeper in the callchain [*1*]. For readers
(not compilers), it would help to have a comment at the caller that
says that show_gitcomp() never returns and exits.
side note #1. Perhaps parse_options_start() would have been
a better place, instead of parse_options_step() that is
repeatedly called in a loop and itself has a loop. ANd
worse yet, the check is done inside the loop even though the
call is to be made only when the --git-completion-helper
option is given as the sole request.
Thanks.
> Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> ---
> parse-options.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/parse-options.c b/parse-options.c
> index 3b874a83a0..6577e52f63 100644
> --- a/parse-options.c
> +++ b/parse-options.c
> @@ -474,8 +474,8 @@ static void show_negated_gitcomp(const struct option *opts, int nr_noopts)
> }
> }
>
> -static int show_gitcomp(struct parse_opt_ctx_t *ctx,
> - const struct option *opts)
> +static void NORETURN show_gitcomp(struct parse_opt_ctx_t *ctx,
> + const struct option *opts)
> {
> const struct option *original_opts = opts;
> int nr_noopts = 0;
> @@ -550,7 +550,7 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
>
> /* lone --git-completion-helper is asked by git-completion.bash */
> if (ctx->total == 1 && !strcmp(arg + 1, "-git-completion-helper"))
> - return show_gitcomp(ctx, options);
> + show_gitcomp(ctx, options);
>
> if (arg[1] != '-') {
> ctx->opt = arg + 1;
next prev parent reply other threads:[~2018-12-10 6:36 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-31 11:05 [PATCH v2 00/41] Automate updating git-completion.bash a bit Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 01/41] parse-options: support --git-completion-helper Nguyễn Thái Ngọc Duy
2018-01-31 20:22 ` Eric Sunshine
2018-01-31 21:04 ` Eric Sunshine
2018-02-01 0:05 ` Duy Nguyen
2018-02-01 9:54 ` Eric Sunshine
2018-02-01 10:21 ` Duy Nguyen
2018-02-01 19:16 ` Eric Sunshine
2018-02-05 9:56 ` Duy Nguyen
2018-02-06 5:04 ` Eric Sunshine
2018-02-07 23:41 ` SZEDER Gábor
2018-02-05 10:46 ` Ævar Arnfjörð Bjarmason
2018-02-05 11:22 ` Duy Nguyen
2018-01-31 11:05 ` [PATCH v2 02/41] parse-options: add OPT_xxx_F() variants Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 03/41] parse-options: let OPT__FORCE take optional flags argument Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 04/41] git-completion.bash: introduce __gitcomp_builtin Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 05/41] completion: use __gitcomp_builtin in _git_add Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 06/41] completion: use __gitcomp_builtin in _git_am Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 07/41] completion: use __gitcomp_builtin in _git_apply Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 08/41] completion: use __gitcomp_builtin in _git_branch Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 09/41] completion: use __gitcomp_builtin in _git_checkout Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 10/41] completion: use __gitcomp_builtin in _git_cherry_pick Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 11/41] completion: use __gitcomp_builtin in _git_clean Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 12/41] completion: use __gitcomp_builtin in _git_clone Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 13/41] completion: use __gitcomp_builtin in _git_commit Nguyễn Thái Ngọc Duy
2018-01-31 20:42 ` Eric Sunshine
2018-01-31 11:05 ` [PATCH v2 14/41] completion: use __gitcomp_builtin in _git_config Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 15/41] completion: use __gitcomp_builtin in _git_describe Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 16/41] completion: use __gitcomp_builtin in _git_difftool Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 17/41] completion: use __gitcomp_builtin in _git_fetch Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 18/41] completion: use __gitcomp_builtin in _git_fsck Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 19/41] completion: use __gitcomp_builtin in _git_gc Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 20/41] completion: use __gitcomp_builtin in _git_grep Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 21/41] completion: use __gitcomp_builtin in _git_help Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 22/41] completion: use __gitcomp_builtin in _git_init Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 23/41] completion: use __gitcomp_builtin in _git_ls_files Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 24/41] completion: use __gitcomp_builtin in _git_ls_remote Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 25/41] completion: use __gitcomp_builtin in _git_merge Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 26/41] completion: use __gitcomp_builtin in _git_merge_base Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 27/41] completion: use __gitcomp_builtin in _git_mv Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 28/41] completion: use __gitcomp_builtin in _git_name_rev Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 29/41] completion: use __gitcomp_builtin in _git_notes Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 30/41] completion: use __gitcomp_builtin in _git_pull Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 31/41] completion: use __gitcomp_builtin in _git_push Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 32/41] completion: use __gitcomp_builtin in _git_remote Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 33/41] remote: force completing --mirror= instead of --mirror Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 34/41] completion: use __gitcomp_builtin in _git_replace Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 35/41] completion: use __gitcomp_builtin in _git_reset Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 36/41] completion: use __gitcomp_builtin in _git_revert Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 37/41] completion: use __gitcomp_builtin in _git_rm Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 38/41] completion: use __gitcomp_builtin in _git_show_branch Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 39/41] completion: use __gitcomp_builtin in _git_status Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 40/41] completion: use __gitcomp_builtin in _git_tag Nguyễn Thái Ngọc Duy
2018-01-31 11:05 ` [PATCH v2 41/41] completion: use __gitcomp_builtin in _git_worktree Nguyễn Thái Ngọc Duy
2018-01-31 15:01 ` [PATCH v2 00/41] Automate updating git-completion.bash a bit Ævar Arnfjörð Bjarmason
2018-02-07 19:23 ` Junio C Hamano
2018-02-08 12:05 ` Duy Nguyen
2018-02-09 11:01 ` [PATCH v3 00/42] " Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 01/42] parse-options: support --git-completion-helper Nguyễn Thái Ngọc Duy
2018-12-02 13:41 ` Ævar Arnfjörð Bjarmason
2018-12-09 10:27 ` [PATCH] parse-options: fix SunCC compiler warning Nguyễn Thái Ngọc Duy
2018-12-10 6:36 ` Junio C Hamano [this message]
2018-12-10 15:26 ` Duy Nguyen
2018-12-11 2:13 ` Junio C Hamano
2018-12-11 15:40 ` Duy Nguyen
2018-12-12 7:50 ` Junio C Hamano
2018-12-11 15:35 ` [PATCH v2] " Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 02/42] parse-options: add OPT_xxx_F() variants Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 03/42] parse-options: let OPT__FORCE take optional flags argument Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 04/42] git-completion.bash: introduce __gitcomp_builtin Nguyễn Thái Ngọc Duy
2018-02-09 18:59 ` Junio C Hamano
2018-02-14 15:35 ` SZEDER Gábor
2018-02-23 10:30 ` Duy Nguyen
2018-02-09 11:01 ` [PATCH v3 05/42] completion: use __gitcomp_builtin in _git_add Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 06/42] completion: use __gitcomp_builtin in _git_am Nguyễn Thái Ngọc Duy
2018-02-14 12:53 ` SZEDER Gábor
2018-02-22 9:13 ` Duy Nguyen
2018-02-22 18:19 ` Junio C Hamano
2018-02-23 10:17 ` Duy Nguyen
2018-02-23 18:08 ` Junio C Hamano
2018-02-24 13:58 ` Duy Nguyen
2018-02-09 11:01 ` [PATCH v3 07/42] completion: use __gitcomp_builtin in _git_apply Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 08/42] completion: use __gitcomp_builtin in _git_branch Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 09/42] completion: use __gitcomp_builtin in _git_checkout Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 10/42] completion: use __gitcomp_builtin in _git_cherry_pick Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 11/42] completion: use __gitcomp_builtin in _git_clean Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 12/42] completion: use __gitcomp_builtin in _git_clone Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 13/42] completion: use __gitcomp_builtin in _git_commit Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 14/42] completion: use __gitcomp_builtin in _git_config Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 15/42] completion: use __gitcomp_builtin in _git_describe Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 16/42] completion: use __gitcomp_builtin in _git_difftool Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 17/42] completion: use __gitcomp_builtin in _git_fetch Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 18/42] completion: use __gitcomp_builtin in _git_fsck Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 19/42] completion: use __gitcomp_builtin in _git_gc Nguyễn Thái Ngọc Duy
2018-02-09 11:01 ` [PATCH v3 20/42] completion: use __gitcomp_builtin in _git_grep Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 21/42] completion: use __gitcomp_builtin in _git_help Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 22/42] completion: use __gitcomp_builtin in _git_init Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 23/42] completion: use __gitcomp_builtin in _git_ls_files Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 24/42] completion: use __gitcomp_builtin in _git_ls_remote Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 25/42] completion: use __gitcomp_builtin in _git_merge Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 26/42] completion: use __gitcomp_builtin in _git_merge_base Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 27/42] completion: use __gitcomp_builtin in _git_mv Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 28/42] completion: use __gitcomp_builtin in _git_name_rev Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 29/42] completion: use __gitcomp_builtin in _git_notes Nguyễn Thái Ngọc Duy
2018-02-14 14:29 ` SZEDER Gábor
2018-02-23 10:33 ` Duy Nguyen
2018-02-23 10:59 ` Duy Nguyen
2018-02-14 15:15 ` SZEDER Gábor
2018-02-23 10:40 ` Duy Nguyen
2018-02-09 11:02 ` [PATCH v3 30/42] completion: use __gitcomp_builtin in _git_pull Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 31/42] completion: use __gitcomp_builtin in _git_push Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 32/42] completion: use __gitcomp_builtin in _git_remote Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 33/42] remote: force completing --mirror= instead of --mirror Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 34/42] completion: use __gitcomp_builtin in _git_replace Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 35/42] completion: use __gitcomp_builtin in _git_reset Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 36/42] completion: use __gitcomp_builtin in _git_revert Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 37/42] completion: use __gitcomp_builtin in _git_rm Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 38/42] completion: use __gitcomp_builtin in _git_show_branch Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 39/42] completion: use __gitcomp_builtin in _git_status Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 40/42] completion: use __gitcomp_builtin in _git_tag Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 41/42] completion: use __gitcomp_builtin in _git_worktree Nguyễn Thái Ngọc Duy
2018-02-09 11:02 ` [PATCH v3 42/42] git-completion.bash: add GIT_COMPLETION_OPTIONS=all config Nguyễn Thái Ngọc Duy
2018-02-09 14:19 ` Ævar Arnfjörð Bjarmason
2018-02-10 9:29 ` Duy Nguyen
2018-02-11 14:47 ` Ævar Arnfjörð Bjarmason
2018-02-11 1:59 ` Eric Sunshine
2018-02-12 0:34 ` Duy Nguyen
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