The R Project SVN R

\name{traceback}
\title{Print Call Stack of Last Error}
\usage{
traceback()
}
\alias{traceback}
\description{
  \code{traceback} prints the call stack of the last error, i.e., the
  sequence of calls that lead to the error.  This is useful when an
  error occurs with an unidentifiable error message.
}
\examples{
foo <- function(x) { print(1); bar(2) }
bar <- function(x) { x + a.variable.which.does.not.exist }
foo(2) # gives a strange error
traceback()
## [1] "bar(2)" "foo(2)"
bar
## Ah, this is the culprit ...
}