This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: Ping Re: Avoid some left-shifts of negative constants

From: Andreas Schwab <schwab at linux-m68k dot org>
To: Joseph Myers <joseph at codesourcery dot com>
Cc: <libc-alpha at sourceware dot org>
Date: Mon, 11 Feb 2019 20:27:40 +0100
Subject: Re: Ping Re: Avoid some left-shifts of negative constants
References: <alpine.DEB.2.21.1902062135410.7523@digraph.polyomino.org.uk> <alpine.DEB.2.21.1902111824100.12179@digraph.polyomino.org.uk>

On Feb 11 2019, Joseph Myers <joseph@codesourcery.com> wrote:

> Ping.  Does anyone else wish to comment on this patch 
> <https://sourceware.org/ml/libc-alpha/2019-02/msg00177.html> as a cleanup 
> in this particular case (where as discussed, in any case -1U would be 
> problematic because of a change of types, -1 would be problematic as well 
> because of possible shifts by 32 or more)?

A shift by 32 or more would be problematic in any case.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."

References:
- Avoid some left-shifts of negative constants
  - From: Joseph Myers
- Ping Re: Avoid some left-shifts of negative constants
  - From: Joseph Myers

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]