Building the Linux kernel with Clang and LLVM
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From: Chaitanya Kulkarni <chaitanyak@nvidia.com>
To: Justin Stitt <justinstitt@google.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"llvm@lists.linux.dev" <llvm@lists.linux.dev>,
	"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
	Max Gurtovoy <mgurtovoy@nvidia.com>,
	"michael.christie@oracle.com" <michael.christie@oracle.com>,
	"mingzhe.zou@easystack.cn" <mingzhe.zou@easystack.cn>,
	"nathan@kernel.org" <nathan@kernel.org>,
	"ndesaulniers@google.com" <ndesaulniers@google.com>,
	"target-devel@vger.kernel.org" <target-devel@vger.kernel.org>,
	"trix@redhat.com" <trix@redhat.com>
Subject: Re: [PATCH v2] target: iscsi: fix clang -Wformat warnings
Date: Mon, 18 Jul 2022 21:35:27 +0000	[thread overview]
Message-ID: <161f9440-0b75-cd11-d9b5-5315721e44f4@nvidia.com> (raw)
In-Reply-To: <20220718180421.49697-1-justinstitt@google.com>

On 7/18/22 11:04, Justin Stitt wrote:
> When building with Clang we encounter these warnings:
> | drivers/target/iscsi/iscsi_target_login.c:719:24: error: format
> | specifies type 'unsigned short' but the argument has type 'int'
> | [-Werror,-Wformat] " from node: %s\n", atomic_read(&sess->nconn),
> -
> | drivers/target/iscsi/iscsi_target_login.c:767:12: error: format
> | specifies type 'unsigned short' but the argument has type 'int'
> | [-Werror,-Wformat] " %s\n", atomic_read(&sess->nconn),
> -
> | drivers/target/iscsi/iscsi_target.c:4365:12: error: format specifies
> | type 'unsigned short' but the argument has type 'int' [-Werror,-Wformat]
> | " %s\n", atomic_read(&sess->nconn)
> 
> For all warnings, the format specifier is `%hu` which describes an
> unsigned short. The resulting type of atomic_read is an int. The
> proposed fix is to listen to Clang and swap the format specifier.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/378
> Signed-off-by: Justin Stitt <justinstitt@google.com>

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>

-ck



  parent reply	other threads:[~2022-07-18 21:35 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-08 21:14 [PATCH] target: iscsi: fix clang -Wformat warning Justin Stitt
2022-07-08 23:42 ` Nick Desaulniers
2022-07-18 18:04 ` [PATCH v2] target: iscsi: fix clang -Wformat warnings Justin Stitt
2022-07-18 20:55   ` Nick Desaulniers
2022-07-18 21:35   ` Chaitanya Kulkarni [this message]
2022-07-19  3:00   ` Martin K. Petersen
2022-07-27  3:15   ` Martin K. Petersen

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