From maechler at stat.math.ethz.ch  Thu Sep  8 10:01:49 2011
From: maechler at stat.math.ethz.ch (Martin Maechler)
Date: Thu, 8 Sep 2011 10:01:49 +0200
Subject: [Rd] repeatable segfault - on Mac
In-Reply-To: <F4958E2B-9A75-4C83-A773-A7940C46FA86@comcast.net>
References: <CAHHjBM7Q7T+zuK2w4yr580dOp0wYKR6eXV9oz_DhvnkWVnzM1A@mail.gmail.com>
	<F4958E2B-9A75-4C83-A773-A7940C46FA86@comcast.net>
Message-ID: <20072.30317.130733.348774@stat.math.ethz.ch>

>>>>> David Winsemius <dwinsemius at comcast.net>
>>>>>     on Tue, 6 Sep 2011 00:38:13 -0400 writes:

    > I can reproduce:
    > eigen(crossprod(matrix(1:2000, 50)) + (0+0i), T, T)

    > *** caught segfault ***
    > address 0x102d0e028, cause 'memory not mapped'

    > Traceback:
    > 1: .Call("La_rs_cmplx", x, only.values, PACKAGE = "base")
    > 2: eigen(crossprod(matrix(1:2000, 50)) + (0 + (0+0i)), T, T)
    > ##---- after restart
    >> sessionInfo()
    > R version 2.13.1 (2011-07-08)
    > Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

    > locale:
    > [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8

    > attached base packages:
    > [1] stats     graphics  grDevices utils     datasets  methods   base

    > With OSX 10.5.8

    > Also happens with 32 bit R
    > [R.app GUI 1.41 (5874) i386-apple-darwin9.8.0]

It does not happen on Linux (different versions) 
nor Windows (2.13.1 patched, early August).

As this is calling LAPACK code,
I guess that this is yet another case where the Mac version
of optimized BLAS / LAPACK is playing wrongly.

Martin Maechler

    > David Winsemius

    > On Sep 6, 2011, at 12:12 AM, robin hankin wrote:

    >> Hi.  macosx 10.6.8
    >> 
    >> With R-2.13.1 and also revision 56948 I get the following repeatable  
    >> segfault:
    >> 
    >> 
    >> 
    >> wt118:~% R --vanilla --quiet
    >>> R.Version()
    >> $platform
    >> [1] "x86_64-apple-darwin9.8.0"
    >> 
    >> $arch
    >> [1] "x86_64"
    >> 
    >> $os
    >> [1] "darwin9.8.0"
    >> 
    >> $system
    >> [1] "x86_64, darwin9.8.0"
    >> 
    >> $status
    >> [1] ""
    >> 
    >> $major
    >> [1] "2"
    >> 
    >> $minor
    >> [1] "13.1"
    >> 
    >> $year
    >> [1] "2011"
    >> 
    >> $month
    >> [1] "07"
    >> 
    >> $day
    >> [1] "08"
    >> 
    >> $`svn rev`
    >> [1] "56322"
    >> 
    >> $language
    >> [1] "R"
    >> 
    >> $version.string
    >> [1] "R version 2.13.1 (2011-07-08)"
    >> 
    >>> eigen(crossprod(matrix(1:2000, 50)) + (0+0i), T, T)
    >> 
    >> *** caught segfault ***
    >> address 0x1038000a8, cause 'memory not mapped'
    >> 
    >> Traceback:
    >> 1: .Call("La_rs_cmplx", x, only.values, PACKAGE = "base")
    >> 2: eigen(crossprod(matrix(1:2000, 50)) + (0 + (0+0i)), T, T)
    >> 
    >> Possible actions:
    >> 1: abort (with core dump, if enabled)
    >> 2: normal R exit
    >> 3: exit R without saving workspace
    >> 4: exit R saving workspace
    >> Selection: 2
    >> wt118:~%
    >> 
    >> 
    >> 
    >> 
    >> 
    >> -- 
    >> Robin Hankin
    >> Uncertainty Analyst
    >> hankin.robin at gmail.com
    >> 
    >> ______________________________________________
    >> R-devel at r-project.org mailing list
    >> https://stat.ethz.ch/mailman/listinfo/r-devel

    > David Winsemius, MD
    > Heritage Laboratories
    > West Hartford, CT

    > ______________________________________________
    > R-devel at r-project.org mailing list
    > https://stat.ethz.ch/mailman/listinfo/r-devel



[Rd] repeatable segfault - on Mac
Martin Maechler