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Mon, 29 Sep 2025 20:32:05 -0700 (PDT) Received: from localhost.localdomain ([2409:8900:7cd:1d59:4483:ece3:c019:40f4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-78102b23634sm12557741b3a.66.2025.09.29.20.32.00 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 29 Sep 2025 20:32:05 -0700 (PDT) From: lianux X-Google-Original-From: lianux To: sj@kernel.org Cc: david.hunter.linux@gmail.com, hannes@cmpxchg.org, justinstitt@google.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, llvm@lists.linux.dev, morbo@google.com, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, nphamcs@gmail.com, shuah@kernel.org, sidharthseela@gmail.com, wang lian Subject: Re: [PATCH v1] selftests: cachestat: Fix warning on declaration under label Date: Tue, 30 Sep 2025 11:31:11 +0800 Message-ID: <20250930033111.63465-1-lianux@lianux.local> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250929172724.75108-1-sj@kernel.org> References: <20250929172724.75108-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 1C4C21A0007 X-Rspamd-Server: rspam05 X-Stat-Signature: 1akgqqh7zxydj3ez68fpanirtuejix4b X-Rspam-User: X-HE-Tag: 1759203126-416400 X-HE-Meta: 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 1hm3O0jJ RRzUsLU3n/N296bRqpLJsSsP3Qtrj6lAnAxOn0ywLGka1jgqWMb+yfvMqdPgmrkQC+S3Ph+mBBHM7e9N0hDY8osf/8ga7nVgOj4/dw6KJBd9DX4gJ0QRZZrPzVJSgk+t1i1MUqgD84i+2KT4PG+yOAmW1uTBETrlQKbIgeCBO97Nn5in+waSh+zTEpHH+mXcPr2hwB0FjyVc4u5Q2bbdGqWUWr5vPvKnDEMO0TJxOrVAmuzV7sa2tQicuDEiy8pKfqFuZYT6YyEC6euBbq8EBUf7/DUbGzqQ0eRtiqh5I/Ed2YCeopEUrzhTmSGTgiwAb9Fc3OVuoVo4c8x9LF1DnwNzC+u+f0PmCV/nxK6iSlXV06CRwV/hYL3Mp+ITKprMGZWQY6dLsFG0bBBj4L4oN8yjqwz0p2q7uj9tPRV3hMEw6HODWBFhSUiSTNSr9qFd2kr5zl4HolP08h6k//fuFPYOyJY/42YZ7ZgPyy9hpqJSWkaM= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: wang lian Reviewed-by: wang lian > Fix warning caused from declaration under a case label. The proper way > is to declare variable at the beginning of the function. The warning > came from running clang using LLVM=1; and is as follows: > -- > -test_cachestat.c:260:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] > 260 | char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE, > | > > Signed-off-by: Sidharth Seela Best regards, wang lian