From: "David Hildenbrand (Red Hat)" <david@kernel.org>
To: Ankit Khushwaha <ankitkhushwaha.linux@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>, Shuah Khan <shuah@kernel.org>,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] selftest/mm: fix pointer comparison in mremap_test
Date: Mon, 10 Nov 2025 10:10:30 +0100 [thread overview]
Message-ID: <de1fcdb7-3597-4d4f-ae77-79f79f9d2268@kernel.org> (raw)
In-Reply-To: <20251108161829.25105-1-ankitkhushwaha.linux@gmail.com>
On 08.11.25 17:18, Ankit Khushwaha wrote:
> Pointer arthemitic with 'void * addr' and 'ulong dest_alignment'
> triggers following warning:
>
> mremap_test.c:1035:31: warning: pointer comparison always evaluates to
> false [-Wtautological-compare]
> 1035 | if (addr + c.dest_alignment < addr) {
> | ^
>
> this warning is raised from clang version 20.1.8 (Fedora 20.1.8-4.fc42).
>
> use 'void *tmp_addr' to do the pointer arthemitic.
>
> Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux@gmail.com>
> ---
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
--
Cheers
David
next prev parent reply other threads:[~2025-11-10 9:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-08 16:18 Ankit Khushwaha
2025-11-10 9:10 ` David Hildenbrand (Red Hat) [this message]
2025-11-10 10:33 ` Mike Rapoport
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