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Date:      Tue, 12 Apr 2016 07:58:01 +0200
From:      Joerg Wunsch <j@uriah.heep.sax.de>
To:        freebsd-sparc64@freebsd.org
Cc:        Shigeharu TAKENO <shige@iee.niit.ac.jp>, gabor@FreeBSD.org, Marius Strobl <marius@freebsd.org>
Subject:   Re: /usr/bin/sort may be incorrect
Message-ID:  <20160412055801.GV10729@uriah.heep.sax.de>
In-Reply-To: <20160411215734.GA2101@alchemy.franken.de>
References:  <201603250229.u2P2TVLp003567@pc98tak.iee.niit.ac.jp> <201603310446.u2V4kLGM003303@pc98tak.iee.niit.ac.jp> <20160331072303.GP53011@uriah.heep.sax.de> <201603311122.u2VBMPam007017@pc98tak.iee.niit.ac.jp> <20160411215734.GA2101@alchemy.franken.de>

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As Marius Strobl wrote:

> AFAICT is sort(1) relying on undefined behavior.

That matches my observation: on FreeBSD 9 (which is still installed on
my sparc64 box), I could successfully build zsh without problems.
Since the major difference from there to current FreeBSD/sparc64 is
the change of the compiler (GCC vs. Clang), this is also a strong
indication of undefined behaviour effects (I think).

Alas, my attempt to install FreeBSD 10.2 on a second disk on that
machine ended up with a kernel that stalled at mounting the root FS,
that's why I didn't investigate further by that time.
-- 
cheers, Joerg               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)



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