[Rd] memory leak in split.screen

[Martin Schlather]

Hello,

## Configuring R with

 ./configure --with-tcl-config=/usr/lib/tcl8.5/tclConfig.sh
--with-tk-config=/usr/lib/tk8.5/tkConfig.sh  CFLAGS="-fsanitize=address
-fsanitize=undefined -fno-sanitize=float-divide-by-zero,vptr  "
CXXFLAGS="-fsanitize=address -fsanitize=undefined
-fno-sanitize=float-divide-by-zero,vptr  " LD_FLAGS="-pthread
-fopenmp-lclang_rt.asan_cxx-x86_64 -fopenmp=libgomp"  CC="clang-3.8
-fsanitize=address -fsanitize=undefined
-fno-sanitize=float-divide-by-zero,vptr" CXX="clang++-3.8
-fsanitize=address -fsanitize=undefined
-fno-sanitize=float-divide-by-zero,vptr"


## I get in the interactive mode of R for

n <- 4 ## the number is unimportant
split.screen(c(n, n))
## close.screen(all=TRUE)  ## this command does not rectify the problem
q()

## the following result:

=================================================================
==14567==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 32 byte(s) in 1 object(s) allocated from:
    #0 0x4d5018  (/usr/local/lib64/R/bin/exec/R+0x4d5018)
    #1 0x7f61cec8b56a  (/usr/lib/x86_64-linux-gnu/libcairo.so.2+0x9b56a)

SUMMARY: AddressSanitizer: 32 byte(s) leaked in 1 allocation(s).


## I use Ubuntu 14.04.4 LTS,
platform       x86_64-pc-linux-gnu                               
arch           x86_64                                            
os             linux-gnu                                         
system         x86_64, linux-gnu                                 
status         Under development (unstable)                      
major          3                                                 
minor          4.0                                               
year           2016                                              
month          07                                                
day            15                                                
svn rev        70918                                             
language       R                                                 
version.string R Under development (unstable) (2016-07-15 r70918)
nickname       Unsuffered Consequences                           



I would be happy to get any hint that explains this behaviour.
The LeakSanitizer message appears in the interactive mode,
but not in the batch mode.

With kind regards,
Martin Schlather