From bolker@zoo.ufl.edu  Wed Mar 22 19:10:55 2000
From: bolker@zoo.ufl.edu (Ben Bolker)
Date: Wed, 22 Mar 2000 14:10:55 -0500 (EST)
Subject: [Rd] segmentation fault with 1D array (PR#500)
In-Reply-To: <x2wvmukeni.fsf@blueberry.kubism.ku.dk>
Message-ID: <Pine.LNX.4.10.10003221408110.10733-100000@bolker.zoo.ufl.edu>


  Weird.  It does crash if I run it in a new session.  I tried the
commands out in a session that I'd already done a whole lot in, so maybe
it's just corrupting some little piece of my (large) environment rather
than segfaulting.

On 22 Mar 2000, Peter Dalgaard BSA wrote:

> Ben Bolker <ben@zoo.ufl.edu> writes:
> 
> > On Wed, 22 Mar 2000 J.C.Rougier@durham.ac.uk wrote:
> > 
> > > Here's a nasty one.  The following has caused a segmentation
> > > fault and possibly also a bus error.
> > > 
> > > fred <- 1:6
> > > dim(fred) <- 6
> > > dimnames(fred) <- list(LETTERS[1:6])
> > > mm <- matrix(1:12, 2, 6)
> > > 
> > > mm %*% fred # segmentation fault here
> > > 
> > > In the case without the dimnames assignment the result is OK.
> > 
> >   Here (1.0.0 on RH 6.0) I get
> > 
> > Error: invalid type for dimname (must be a vector)
> > 
> > instead of a segmentation fault.
> 
> Hm? 1.0.0 on RH 6.1 gives the segfault for me as does later patch
> versions...
> 
> 

-- 
Ben Bolker                                  bolker@zoo.ufl.edu
Zoology Department, University of Florida   http://www.zoo.ufl.edu/bolker
318 Carr Hall/Box 118525                    tel: (352) 392-5697
Gainesville, FL 32611-8525                  fax: (352) 392-3704

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[Rd] segmentation fault with 1D array (PR#500)
Ben Bolker