Date: Mon, 03 Feb 2025 17:24:45 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@FreeBSD.org> To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> Cc: hackers@freebsd.org Subject: Re: %b with uint64_t? Message-ID: <86frkvgfn6.fsf@ltc.des.dev> In-Reply-To: <157p941p-159p-rn75-2qo9-6762o7sprq40@yvfgf.mnoonqbm.arg> (Bjoern A. Zeeb's message of "Sat, 1 Feb 2025 01:07:37 %2B0000 (UTC)") References: <157p941p-159p-rn75-2qo9-6762o7sprq40@yvfgf.mnoonqbm.arg>
index | next in thread | previous in thread | raw e-mail
"Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> writes:
> I recently ran into a problem with a uint64_t bitflag to use the %b
> print format in the kernel.
The correct format string to print a uint64_t as binary is %w64b. You
may have to disable -Wformat locally to get it to compile cleanly:
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat"
printf("%w64b\n", num);
#pragma GCC diagnostic pop
DES
--
Dag-Erling Smørgrav - des@FreeBSD.org
home |
help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?86frkvgfn6.fsf>