LKML Archive on
help / color / mirror / Atom feed
From: Nick Desaulniers <>
	Rasmus Villemoes <>,
Subject: Re: linux-next: build failure while building Linus' tree
Date: Thu,  9 Sep 2021 15:50:35 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

+ Rasmus

This was introduced in
commit f0907827a8a91 ("compiler.h: enable builtin overflow checkers and add
fallback code")
which added division using the `/` operator, which is problematic when checking
for overflows of 64b operands on 32b targets.

We'll probably need helpers from linux/math64.h and some combination of

That will help us fix another compiler bug for older clang releases, too.

  reply	other threads:[~2021-09-09 22:50 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-09  8:25 linux-next: build failure while building Linus' tree Stephen Rothwell
2021-09-09 22:50 ` Nick Desaulniers [this message]
2021-09-10 22:02   ` Nick Desaulniers
2021-09-10 22:17     ` Nick Desaulniers
2021-09-10 22:26       ` Nick Desaulniers
2021-09-10 22:34         ` Nick Desaulniers

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).