crash after using graphics in Rcmdr (PR#13679)

John,

To the best of my knowledge this problem in R.app has been around at
 least since the R-2.8 days, but likely much longer. I never use R
from  a Terminal, so don't know if it occurs or not outside R.app.

It's not related to Rcmdr and you're observation is indeed one of the
 better ways to kind of reproduce the issue. Not sure if it always
does  though. If you have a 'hard' way of crashing R.app, please let
me know  the sequence. In cases when no output is written to the
console of  R.app I tend to make sure I enter an empty line before
closing the  graphics window.

This issue and sometimes very long sequences of plots (never have
been  able to make that reproducible, sometimes the crash happens up
to a  minute after R finishes a series of plots and I'm working in an
 external editor like TextMate) are hard to pin down.

Regards,
Rob

Note: Hope you don't mind I've removed the R-bugs & R-devel Cc's.

On Apr 30, 2009, at 6:29 AM, John Fox wrote:

Dear Neil,

I had R 2.8.0 installed on my Mac Book, also with OS X 10.5.6, and

was

unable to duplicate this problem. I then installed R 2.9.0 and  
observed the
same problem that you did. In both cases, I used the latest version

of the
Rcmdr package, 1.4-10.

I also observed the following: (1) The problem occurred only if I  
closed the
Quartz graphics device after the first graph was plotted; if I

plotted

another graph and then closed the device, the problem did not

occur.  

(2) The
problem did not occur if I ran R from a terminal with an X11  
graphics device
rather than using R.app.

I'm afraid that there's not much more that I can do at this point,

since my
familiarity with Macs is minimal. I'm copying this message to Rob  
Goedman,
who has proven helpful in the past. Of course, if there's something

in the
Rcmdr that's causing the problem and I can fix it, I will.

Regards,
John

-----Original Message-----
From: r-devel-bounces at r-project.org

[mailto:r-devel-bounces at r-project.org 

]

On

Behalf Of nhepburn at ualberta.ca
Sent: April-28-09 1:25 PM
To: r-devel at stat.math.ethz.ch
Cc: R-bugs at r-project.org
Subject: [Rd] crash after using graphics in Rcmdr (PR#13679)

Full_Name: Neil Hepburn
Version: 2.81 and 2.90
OS: OS-X 10.5.6
Submission from: (NULL) (142.244.28.93)


When I create graphs using Rcmdr and then close the quartz

display, R

blows

up
and tells me of a segmentation fault. It then gives me
*** caught segfault ***
address 0xc0000023, cause 'memory not mapped'

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:

This only happens if I create the graphics from within Rcmdr. If I

create

the

graphics manually, there is no problem. This occurs on my laptop  
with R

2.8.1

(I
uninstalled 2.9 and reinstall 2.8.1 to see if the problem existed

there)

and

also on my iMac with R2.9.