Date: Wed, 29 Sep 2010 14:41:17 -0300 From: Renato Botelho <rbgarga@gmail.com> To: Roman Divacky <rdivacky@freebsd.org> Cc: Derek Tattersall <dlt@mebtel.net>, Dimitry Andric <dim@freebsd.org>, current@freebsd.org Subject: Re: Clang now builds world and kernel, on i386 and amd64 Message-ID: <AANLkTi=6n0%2BEYsXT5aG_mjFmTK=fUYhwptvW%2Bn4zQMOK@mail.gmail.com> In-Reply-To: <20100929173158.GA73653@freebsd.org> References: <4C99A53E.7060707@FreeBSD.org> <AANLkTimYj1VnVQBLROE94rqPYO7pQyHWfpjiYYZ2ORrX@mail.gmail.com> <AANLkTikm0FrJbOTiRPQhcqM30N-GyOYRBk_8jR-Gq9jF@mail.gmail.com> <20100929002843.GA5001@oriental.arm.org> <4CA2E00D.3080102@FreeBSD.org> <AANLkTik4k%2Bg8NGwRUp=7bvF2MiHhbBOHmA=Ree_-xRDT@mail.gmail.com> <4CA3244D.7030907@FreeBSD.org> <20100929155659.GA82433@oriental.arm.org> <20100929173158.GA73653@freebsd.org>
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On Wed, Sep 29, 2010 at 2:31 PM, Roman Divacky <rdivacky@freebsd.org> wrote= : > On Wed, Sep 29, 2010 at 11:56:59AM -0400, Derek Tattersall wrote: >> * Dimitry Andric <dim@freebsd.org> [100929 08:55]: >> > On 2010-09-29 13:23, Renato Botelho wrote: >> > > #!/usr/bin/perl >> > > >> > > use File::Temp; >> > > >> > > my ( $fh, $filename ) =3D File::Temp::tempfile(); >> > > print "$filename\n"; >> > >> > For me it works perfectly, though I am using perl 5.10: >> > >> > $ cat foo.pl >> > #!/usr/bin/perl >> > >> > use File::Temp; >> > >> > my ( $fh, $filename ) =3D File::Temp::tempfile(); >> > print "$filename\n"; >> > $ perl -v >> > >> > This is perl, v5.10.1 (*) built for i386-freebsd-64int >> > >> > Copyright 1987-2009, Larry Wall >> > >> > Perl may be copied only under the terms of either the Artistic License= or the >> > GNU General Public License, which may be found in the Perl 5 source ki= t. >> > >> > Complete documentation for Perl, including FAQ lists, should be found = on >> > this system using "man perl" or "perldoc perl". =A0If you have access = to the >> > Internet, point your browser at http://www.perl.org/, the Perl Home Pa= ge. >> > >> > $ perl foo.pl >> > /tmp/tv25CPnWhF >> > $ perl foo.pl >> > /tmp/L2UJQ5_JJs >> > $ perl foo.pl >> > /tmp/6ynQYvWIc1 >> > $ perl foo.pl >> > /tmp/Tdpf7PKBMg >> > $ perl foo.pl >> > /tmp/76ir2i1ici >> > $ perl foo.pl >> > /tmp/LhfD0eZgd8 >> > >> > I'll try building perl 5.12 and try it again. >> > >> > Btw, I assume you did *not* rebuild perl with clang, so your perl is >> > still compiled with gcc? >> > _______________________________________________ >> > freebsd-current@freebsd.org mailing list >> > http://lists.freebsd.org/mailman/listinfo/freebsd-current >> > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.= org" >> I built a test case using perl 5.12 and demonstrated that calling int(ra= nd()) >> in perl returns NAN, as does calling rand() by itself. =A0A "C" program >> that calls libc's rand() does return differing integers. =A0The perl >> documentation claims that perl's rand() calls "C"s rand() and srand() if >> necessary. =A0I think this effectively demonstrates that the problem lie= s >> with the perl function rand() and it's interface to libc's rand() as >> provided by clang. >> >> On a recent stable system, perl's mktemp works fine. =A0The only real >> difference is that libc on stable is built with gcc and libc on current >> is built with clang. > > what does this show with clang libc? > > perl -e 'print int(rand(60)) . " \n" foreach (1 .. 10)' > > I guess it returns all 0, as the $CHAR[0] is 'A', can you test that? > root@botelhor:/usr/src/lib/libc# perl -e 'print int(rand(60)) . " \n" foreach (1 .. 10)' nan nan nan nan nan nan nan nan nan nan --=20 Renato Botelho
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