Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <4c8bd175b3749631ebd3ab1b70693b3f7e748c69.camel@xry111.site>
Subject: Re: [PATCH 1/2] LoongArch: Add pad structure members for explicit
 alignment
From:   Xi Ruoyao <xry111@xry111.site>
To:     Qing Zhang <zhangqing@loongson.cn>,
        WANG Xuerui <kernel@xen0n.name>,
        Huacai Chen <chenhuacai@kernel.org>
Cc:     Jiaxun Yang <jiaxun.yang@flygoat.com>, loongarch@lists.linux.dev,
        linux-kernel@vger.kernel.org
Date:   Thu, 20 Apr 2023 12:28:43 +0800
In-Reply-To: <51051bd7e42378cdf465494389ab76a30ca3acf2.camel@xry111.site>
References: <20230418091348.9239-1-zhangqing@loongson.cn>
         <a7fa32c3af68083855e7690f67824d060d5c6135.camel@xry111.site>
         <899085c1-7a74-8bab-1429-1b6e9e4c2c30@xen0n.name>
         <48bc7236-638d-9086-daaf-62eacea80dd2@xen0n.name>
         <111c1e81-dfae-4388-9fc6-a3f247641398@loongson.cn>
         <51051bd7e42378cdf465494389ab76a30ca3acf2.camel@xry111.site>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
User-Agent: Evolution 3.48.0 
MIME-Version: 1.0
Precedence: bulk

On Thu, 2023-04-20 at 12:24 +0800, Xi Ruoyao wrote:
> undefined behavior.=C2=A0 `printf(PRIu16 "\n", ptr->dbg_info);` is an
> undefined behavior if ptr->dbg_info is a int16_t, because the standard
                                           ^^^^^^^ uint64_t

:(

--=20
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University