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From: Andrew Morton <akpm@linux-foundation.org>
To: Josh Law <hlcj1234567@gmail.com>
Cc: linux-kernel@vger.kernel.org, Josh Law <objecting@objecting.org>
Subject: Re: [PATCH 2/2] lib: glob: replace bitwise OR with logical operation on boolean
Date: Sun, 1 Mar 2026 11:25:42 -0800	[thread overview]
Message-ID: <20260301112542.0d915c2388febccf0294b880@linux-foundation.org> (raw)
In-Reply-To: <20260301152143.2572137-2-objecting@objecting.org>

On Sun,  1 Mar 2026 15:21:42 +0000 Josh Law <hlcj1234567@gmail.com> wrote:

> Using bitwise OR (|=) on a boolean variable is valid C, but replacing it with a direct logical assignment makes the intent clearer and appeases strict static analysis tools.
> 

Fair enough.

> --- a/lib/glob.c
> +++ b/lib/glob.c
> @@ -96,7 +96,8 @@ bool __pure glob_match(char const *pat, char const *str)
>  					class += 2;
>  					/* Any special action if a > b? */
>  				}
> -				match |= (a <= c && c <= b);
> +				if (a <= c && c <= b)
> +					match = true;
>  			} while ((a = *class++) != ']');
>  
>  			if (match == inverted)

But if we're concerned about bool abuse, what's this?

			bool match = false, inverted = (*pat == '!');
			char const *class = pat + inverted;


  reply	other threads:[~2026-03-01 19:25 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-01 15:21 [PATCH 1/2] lib: glob: add explicit include for export.h Josh Law
2026-03-01 15:21 ` [PATCH 2/2] lib: glob: replace bitwise OR with logical operation on boolean Josh Law
2026-03-01 19:25   ` Andrew Morton [this message]
2026-03-01 19:40     ` Josh Law
2026-03-01 19:43       ` Andrew Morton
2026-03-01 22:05     ` David Laight
2026-03-02  2:56   ` Kuan-Wei Chiu
2026-03-02  3:02     ` Kuan-Wei Chiu
2026-03-02  7:11       ` Josh Law

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