On Fri, 18 Feb 2011, Charles Roosen wrote:
Dear all,
I'm having a problem with debugger() in both R 2.8.0 and R 2.12.0.
Probably also versions in-between.
But you are asked to report only on current R.
I don't see it logged in the bug database, but it's hard for me to
imagine that no-one else has encountered it. So my question is whether
it's a known problem with a workaround, or do I log it as a new problem?
I doubt if almost anyone uses dump.frames() in R. I think this is
known, and the workaround is 'don't do that': use error=recover.
The situation is that if I use "options(error=dump.frames)" and then use
"debugger()", it fails if there's "..." in the function arguments.
Repro and version info below.
Thanks,
Charlie Roosen
myFunc <- function(a,b,...) {d <- a+b; stop("")}
options(error=dump.frames)
myFunc(1,2)
Error in myFunc(1, 2) :
debugger()
Message: Error in myFunc(1, 2) :
Available environments had calls:
1: myFunc(1, 2)
2: stop("")
Enter an environment number, or 0 to exit Selection: 1
Error in get(.obj, envir = dump[[.selection]]) :
argument "..." is missing, with no default
That's easy to fix with a tryCatch() wrapper. But the real problem is
with last.dump(), and recover() has it to some extent:
options(error=recover)
myFunc(1,2,e=pi)
Error in myFunc(1, 2, e = pi) :
Enter a frame number, or 0 to exit
1: myFunc(1, 2, e = pi)
Selection: 1
Called from: top level
Browse[1]> e
Error during wrapup: object 'e' not found
If you know how, you can get to 'e' though ....
I am really not sure this is worth changing.
version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 12.0
year 2010
month 10
day 15
svn rev 53317
language R
version.string R version 2.12.0 (2010-10-15)
Charles Roosen, PhD
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