linux-kernel - Re: [PATCH v2] kvm: Avoid shadowing a local in search

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Message-ID: <YXlguTLnOuEphLiZ@google.com>
Date:   Wed, 27 Oct 2021 14:22:49 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Qian Cai <quic_qiancai@...cinc.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] kvm: Avoid shadowing a local in search_memslots()

On Tue, Oct 26, 2021, Qian Cai wrote:
> It is less error-prone to use a different variable name from the existing
> one in a wider scope. This is also flagged by GCC (W=2):
> 
> ./include/linux/kvm_host.h: In function 'search_memslots':
> ./include/linux/kvm_host.h:1246:7: warning: declaration of 'slot' shadows a previous local [-Wshadow]
>  1246 |   int slot = start + (end - start) / 2;
>       |       ^~~~
> ./include/linux/kvm_host.h:1240:26: note: shadowed declaration is here
>  1240 |  struct kvm_memory_slot *slot;
>       |                          ^~~~
> 
> Signed-off-by: Qian Cai <quic_qiancai@...cinc.com>
> ---

Reviewed-by: Sean Christopherson <seanjc@...gle.com>