module RSpec::Core

def self.const_missing(name)

that depend on the const name of the error in RSpec <= 2.8.
Alias the error for compatibility with extension gems (e.g. formatters) 
def self.const_missing(name)
  return super unless name == :PendingExampleFixedError
  RSpec.deprecate("RSpec::Core::PendingExampleFixedError",
    :replacement => "RSpec::Core::Pending::PendingExampleFixedError")
  Pending::PendingExampleFixedError
end