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: [RFC] strcpy optimizations

From: Andi Kleen <andi at firstfloor dot org>
To: Paul Eggert <eggert at cs dot ucla dot edu>
Cc: OndÅej BÃlka <neleai at seznam dot cz>,andi at firstfloor dot org, libc-alpha at sourceware dot org
Date: Tue, 29 Jan 2013 23:22:31 +0100
Subject: Re: [RFC] strcpy optimizations
References: <20130129201542.GA23023@domone.kolej.mff.cuni.cz> <51083F61.4070103@cs.ucla.edu> <20130129215334.GA25646@domone.kolej.mff.cuni.cz> <510849C4.6090009@cs.ucla.edu>

> The behavior of strcpy is undefined in that case.
> So strcpy can do whatever it likes, and
> that includes using the pblendvb instruction.

Normally you have to handle this situation for any string code
that does accesses larger than a byte, because users can create
this by using offsets into strings.

-Andi

Follow-Ups:
- Re: [RFC] strcpy optimizations
  - From: Paul Eggert

References:
- [RFC] strcpy optimizations
  - From: OndÅej BÃlka
- Re: [RFC] strcpy optimizations
  - From: Paul Eggert
- Re: [RFC] strcpy optimizations
  - From: OndÅej BÃlka
- Re: [RFC] strcpy optimizations
  - From: Paul Eggert

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