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: [PATCH] Implement strlcat [BZ#178]

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Florian Weimer <fweimer at redhat dot com>, libc-alpha at sourceware dot org
Cc: Zack Weinberg <zackw at panix dot com>
Date: Fri, 4 Dec 2015 08:06:58 -0800
Subject: Re: [PATCH] Implement strlcat [BZ#178]
Authentication-results: sourceware.org; auth=none
References: <56547472 dot 3010302 at redhat dot com> <5654B1FE dot 5020100 at cs dot ucla dot edu> <5654B796 dot 7070302 at redhat dot com> <5656E018 dot 5020608 at cs dot ucla dot edu> <565F211A dot 2030909 at redhat dot com> <56607CD1 dot 3050209 at cs dot ucla dot edu> <CAKCAbMgDMK9wjfNEJYW7e-cN9s5aVhun6V08OXrcOgYKRYF7_g at mail dot gmail dot com> <5660825E dot 9020901 at cs dot ucla dot edu> <CAKCAbMi2zSJRjS=ceg8UvTYY18UrCWysaOFX+OzvKZQfeR9+SA at mail dot gmail dot com> <5660C545 dot 1090805 at cs dot ucla dot edu> <56617536 dot 9040308 at redhat dot com>

On 12/04/2015 03:12 AM, Florian Weimer wrote:

There is no "_exactly_". The BSDs differ.

I think the behavior is the same.

No, as I mentioned elsewhere, the NetBSD iimplementation does not allowstrlcpy(0, SRC, 0) whereas the FreeBSD implementation does (and thisdisagrees with the FreeBSD documentation where it says the destinationmust be a string). I haven't investigated strlcpy but I expect that itdiffers too.


It is a bit of a mess.

It's certainly OK to reach out to the OpenBSD and FreeBSD and NetBSDfolks here, in particular as to whether applications rely on these weirdcorner cases. I am pretty sure they do not, and that it'd be better tomake them errors.

Follow-Ups:
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Florian Weimer

References:
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Florian Weimer
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Paul Eggert
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Zack Weinberg
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Paul Eggert
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Zack Weinberg
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Paul Eggert
- Re: [PATCH] Implement strlcat [BZ#178]
  - From: Florian Weimer

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