title: Why this "segfault" with dplyr arrange function in R
body: <p>Following code consistently produces crash on my R system 3.2.2 : </p>
  
  <pre><code>&gt; R.version
                 _                           
  platform       i486-slackware-linux-gnu    
  arch           i486                        
  os             linux-gnu                   
  system         i486, linux-gnu             
  status                                     
  major          3                           
  minor          2.2                         
  year           2015                        
  month          08                          
  day            14                          
  svn rev        69053                       
  language       R                           
  version.string R version 3.2.2 (2015-08-14)
  nickname       Fire Safety               
  
  &gt; lll = list(list(5,3,4), list(5,3,7), list(6,2,1), list(6,1,3), list(5,2,1))
  &gt; dd = data.frame(do.call(rbind, lll))
  &gt; dd
    X1 X2 X3
  1  5  3  4
  2  5  3  7
  3  6  2  1
  4  6  1  3
  5  5  2  1
  
  &gt; dplyr::arrange(dd, X1)
  
   *** caught segfault ***
  address (nil), cause 'memory not mapped'
  
  Traceback:
   1: .Call("dplyr_arrange_impl", PACKAGE = "dplyr", data, dots)
   2: arrange_impl(.data, dots)
   3: arrange_.tbl_df(tbl_df(.data), .dots = dots)
   4: arrange_(tbl_df(.data), .dots = dots)
   5: as.data.frame(arrange_(tbl_df(.data), .dots = dots))
   6: arrange_.data.frame(.data, .dots = lazyeval::lazy_dots(...))
   7: arrange_(.data, .dots = lazyeval::lazy_dots(...))
   8: dplyr::arrange(dd, X1)
  
  Possible actions:
  1: abort (with core dump, if enabled)
  2: normal R exit
  3: exit R without saving workspace
  4: exit R saving workspace
  </code></pre>
  
  <p>Why is this crash occurring and how can I correct it? </p>