netdev - Re: [PATCH bpf-next v2] tools: bpftool: fix variable shadowing in emit_obj_refs

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Date:   Tue, 23 Jun 2020 15:15:09 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Quentin Monnet <quentin@...valent.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf-next v2] tools: bpftool: fix variable shadowing in emit_obj_refs_json()

On Tue, Jun 23, 2020 at 2:39 PM Quentin Monnet <quentin@...valent.com> wrote:
>
> Building bpftool yields the following complaint:
>
>     pids.c: In function 'emit_obj_refs_json':
>     pids.c:175:80: warning: declaration of 'json_wtr' shadows a global declaration [-Wshadow]
>       175 | void emit_obj_refs_json(struct obj_refs_table *table, __u32 id, json_writer_t *json_wtr)
>           |                                                                 ~~~~~~~~~~~~~~~^~~~~~~~
>     In file included from pids.c:11:
>     main.h:141:23: note: shadowed declaration is here
>       141 | extern json_writer_t *json_wtr;
>           |                       ^~~~~~~~
>
> Let's rename the variable.
>
> v2:
> - Rename the variable instead of calling the global json_wtr directly.
>
> Signed-off-by: Quentin Monnet <quentin@...valent.com>
> ---

Thanks.

Acked-by: Andrii Nakryiko <andriin@...com>

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