linux-kernel - Re: [PATCH v3 00/16] Introduce and use generic parity16/32/64 helper

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Message-ID: <5A790652-1B22-4D13-AAC5-5D9931E90903@zytor.com>
Date: Fri, 07 Mar 2025 11:30:35 -0800
From: "H. Peter Anvin" <hpa@...or.com>
To: Andrew Cooper <andrew.cooper3@...rix.com>
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Subject: Re: [PATCH v3 00/16] Introduce and use generic parity16/32/64 helper

On March 7, 2025 10:49:56 AM PST, Andrew Cooper <andrew.cooper3@...rix.com> wrote:
>> (int)true most definitely is guaranteed to be 1.
>
>That's not technically correct any more.
>
>GCC has introduced hardened bools that intentionally have bit patterns
>other than 0 and 1.
>
>https://gcc.gnu.org/gcc-14/changes.html
>
>~Andrew

Bit patterns in memory maybe (not that I can see the Linux kernel using them) but for compiler-generated conversations that's still a given, or the manager isn't C or anything even remotely like it.