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Re: [PATCH] strerror_r: simplify AIX code.
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From: |
Eric Blake |
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Subject: |
Re: [PATCH] strerror_r: simplify AIX code. |
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Date: |
Fri, 20 May 2011 17:27:00 -0600 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.10 |
On 05/20/2011 05:21 PM, Eric Blake wrote:
> But both errors are allowed by POSIX, and we have the case that glibc's
> __xpg_strerror_r favors EINVAL while cygwin's _xpg_strerror_r favors
> ERANGE. The testsuite tests for both codes, because there is no
> heirarchy in POSIX on which error code if more than one error code
> simultaneously applies.
One more point - if http://austingroupbugs.net/view.php?id=398 is
approved, then ERANGE will be changed to a shall fail while EINVAL
remains only a may fail (right now, both errors are only a 'may fail',
but we are doing users a disservice by truncating without an error). In
my mind, a 'shall fail' tends to have higher priority than a 'may fail',
even when both situations apply.
--
Eric Blake address@hidden +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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