R devel - May 2004 - dir.create bug (PR#6892)

Full_Name: Jim Breaux
Version: 1.9.0
OS: WinXP
Submission from: (NULL) (209.78.110.135)


dir.create() is reporting a warning that a directory already exists when in fact
the directory does NOT already exist.  However, the erroneous behavior does not
manifest itself until dir.create() has been called at least once to create a
directory that DOES already exist.  For example:

# Create a directory that does NOT exist:
> result <- dir.create("C:\\TEMP")
> result
[1] TRUE

# Create another directory that does NOT exist:
> result <- dir.create("C:\\TEMP2")
> result
[1] TRUE

# Now try to create a directory that DOES already exist:
> result <- dir.create("C:\\TEMP")
Warning message: 
'C:\TEMP' already exists 
> result
[1] FALSE

# Finally, try to create a directory that does NOT
exist:
> result <- dir.create("C:\\TEMP3")
Warning message: 
'C:\TEMP3' already exists 
> result
[1] TRUE

Notice that in the last case, result == TRUE as expected; however, the warning
message should not be reported.

Thanks. Fixed in R-patched.

On Tue, 18 May 2004 jkbreaux@san.rr.com wrote:
> Full_Name: Jim Breaux
> Version: 1.9.0
> OS: WinXP
> Submission from: (NULL) (209.78.110.135)
> 
> 
> dir.create() is reporting a warning that a directory already exists when
> in fact the directory does NOT already exist.  However, the erroneous
> behavior does not manifest itself until dir.create() has been called at
> least once to create a directory that DOES already exist.  For example:
> 
> # Create a directory that does NOT exist:
> > result <- dir.create("C:\\TEMP")
> > result
> [1] TRUE
> 
> # Create another directory that does NOT exist:
> > result <- dir.create("C:\\TEMP2")
> > result
> [1] TRUE
> 
> # Now try to create a directory that DOES already exist:
> > result <- dir.create("C:\\TEMP")
> Warning message: 
> 'C:\TEMP' already exists 
> > result
> [1] FALSE
> 
> # Finally, try to create a directory that does NOT exist:
> > result <- dir.create("C:\\TEMP3")
> Warning message: 
> 'C:\TEMP3' already exists 
> > result
> [1] TRUE
> 
> Notice that in the last case, result == TRUE as expected; however, the
> warning message should not be reported.
> 
> ______________________________________________
> R-devel@stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-devel
> 
> 
-- 
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