R devel - Apr 2003 - ctl-D, cancel, ctl-D yields seg fault (PR#2773)

Full_Name: Robert Dodier
Version: 1.2.0  (2000-12-15)
OS: RH Linux 7.1
Submission from: (NULL) (128.138.88.127)


If I start up R and just do:
> <ctl-D>
Save workspace image? [y/n/c]: c
> <ctl-D>
then R segfaults.

"gdb `locate R.bin` core" reports:
(gdb) where
#0  0x080a2282 in Rf_mainloop () at eval.c:41

However, if I use q() then there is no segfault:
> q()
Save workspace image? [y/n/c]: c
> q()
Save workspace image? [y/n/c]: n

and it exits without further ado.

Also, <ctl-D> followed by 'y' or 'n' exits without
segfault.

I searched the bug archive but I didn't find this
bug, so here it is. 

Regards,
Robert Dodier
robert_dodier@yahoo.com

robert_dodier@yahoo.com wrote:
> Full_Name: Robert Dodier
> Version: 1.2.0  (2000-12-15)
> OS: RH Linux 7.1
> Submission from: (NULL) (128.138.88.127)
> 
> 
> If I start up R and just do:
> 
> 
>><ctl-D>
> 
> Save workspace image? [y/n/c]: c
> 
>><ctl-D>
> 
> 
> then R segfaults.
  Then dont do that.

  Its like the old joke: Man goes to doctor and waves his arm in a funny 
way and says "It hurts when I do that", and the doctor says "then
dont
do that".

  More seriously, I dont think bugs in version 1.2.0 are a priority - 
and even my ancient 1.6.0 doesn't crash like that. If it really bothers 
you, upgrade, since there are probably zillions of other more serious 
problems in 1.2.0 that will bite you.

Baz

On Mon, 14 Apr 2003 robert_dodier@yahoo.com wrote:
> Full_Name: Robert Dodier
> Version: 1.2.0  (2000-12-15)
That's over two years old!
> OS: RH Linux 7.1
> Submission from: (NULL) (128.138.88.127)
> 
> 
> If I start up R and just do:
> 
> > <ctl-D>
> Save workspace image? [y/n/c]: c
> > <ctl-D>
> 
> then R segfaults.
> 
> "gdb `locate R.bin` core" reports:
> (gdb) where
> #0  0x080a2282 in Rf_mainloop () at eval.c:41
> 
> However, if I use q() then there is no segfault:
> > q()
> Save workspace image? [y/n/c]: c
> > q()
> Save workspace image? [y/n/c]: n
> 
> and it exits without further ado.
> 
> Also, <ctl-D> followed by 'y' or 'n' exits without
segfault.
> 
> I searched the bug archive but I didn't find this
> bug, so here it is. 
It does not happen in current versions of R, at least on RedHat 8.0.
Note that as you are (I presume) using readline, one would need to
test on the (long superceded) RH7.1 to be sure.

Please update your R and try again.

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

robert_dodier@yahoo.com writes:
> Full_Name: Robert Dodier
> Version: 1.2.0  (2000-12-15)
> OS: RH Linux 7.1
> Submission from: (NULL) (128.138.88.127)
I know we've been having mailing list delays, but this looks a bit
extreme. R-1.2.0 is almost two and a half years old! 

It's not happening with 1.6.2 (although it is still possible to tease
the system enough that you exit R with the terminal in noecho mode).
 
> 
> If I start up R and just do:
> 
> > <ctl-D>
> Save workspace image? [y/n/c]: c
> > <ctl-D>
> 
> then R segfaults.
> Also, <ctl-D> followed by 'y' or 'n' exits without
segfault.
> 
> I searched the bug archive but I didn't find this
> bug, so here it is. 
Sometimes we do fix bugs without someone reporting them first... It
should have been in the NEWS file though, but I can't find it there.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907