Print Call Stack of Last Error

Description

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. Currently, this stack is given as a list in .Traceback.

Usage

traceback()

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 ...