Date: Wed, 29 Sep 2010 19:44:34 +0200 From: Roman Divacky <rdivacky@freebsd.org> To: Renato Botelho <rbgarga@gmail.com> 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: <20100929174434.GA75072@freebsd.org> In-Reply-To: <AANLkTi=6n0%2BEYsXT5aG_mjFmTK=fUYhwptvW%2Bn4zQMOK@mail.gmail.com> 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> <AANLkTi=6n0%2BEYsXT5aG_mjFmTK=fUYhwptvW%2Bn4zQMOK@mail.gmail.com>
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On Wed, Sep 29, 2010 at 02:41:17PM -0300, Renato Botelho wrote: > 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, $filename ) = File::Temp::tempfile(); > >> > > print "$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, $filename ) = File::Temp::tempfile(); > >> > print "$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 kit. > >> > > >> > Complete documentation for Perl, including FAQ lists, should be found on > >> > this system using "man perl" or "perldoc perl". ?If you have access to the > >> > Internet, point your browser at http://www.perl.org/, the Perl Home Page. > >> > > >> > $ 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(rand()) > >> in perl returns NAN, as does calling rand() by itself. ?A "C" program > >> that calls libc's rand() does return differing integers. ?The perl > >> documentation claims that perl's rand() calls "C"s rand() and srand() if > >> necessary. ?I think this effectively demonstrates that the problem lies > >> 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. ?The 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 heh, now I noticed that Derek already wrote that ;) is anyone able to find where in perl sources the rand function is defined? I failed that :(
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