linux-hardening - Re: [PATCH net-next 1/2] gve: Avoid unnecessary use of comma operator

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Date: Fri, 3 May 2024 23:40:18 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Simon Horman <horms@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jeroen de Borst <jeroendb@...gle.com>,
	Praveen Kaligineedi <pkaligineedi@...gle.com>,
	Shailend Chand <shailend@...gle.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Kees Cook <keescook@...omium.org>, netdev@...r.kernel.org,
	llvm@...ts.linux.dev, linux-hardening@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] gve: Avoid unnecessary use of comma operator

On Fri, May 03, 2024 at 09:31:26PM +0100, Simon Horman wrote:
> Although it does not seem to have any untoward side-effects,
> the use of ';' to separate to assignments seems more appropriate than ','.
> 

Huh.  Interesting.  I wrote a check for that in Smatch.  The only place
where it would matter would be in an if statement.

	if (foo)
		frob1(),
	frob2();

It's unexpected that frob2() is included in the if statement.  But I
was never able to find any of these actual bugs so I gave up.

regards,
dan carpenter