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The following reply was made to PR lib/41567; it has been noted by GNATS.
From: Stathis Kamperis <ekamperi%gmail.com@localhost>
Subject: Re: lib/41567
Date: Wed, 10 Jun 2009 12:02:50 +0300
Strictly speaking the spec doesn't say that the errno shouldn't be
touched. Though, usually, when errno is expected to be set, it is
explicitly mentioned. Moreover, what's the use of returning an error
code and setting errno at the same time ? As far as I know, glibc
doesn't set errno, nor DragonFly's libc. On the other hand, sun OS
5.10 and NetBSD do. Again, this is not a bug, but I think it would be
nice to have. At the very least it should be documented in
posix_memalign(3) that the function sets errno.
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