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-rw-r--r--railties/lib/initializer.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/railties/lib/initializer.rb b/railties/lib/initializer.rb
index 560105670f..f0fb78c8f4 100644
--- a/railties/lib/initializer.rb
+++ b/railties/lib/initializer.rb
@@ -12,6 +12,10 @@ require 'rails/configuration'
RAILS_ENV = (ENV['RAILS_ENV'] || 'development').dup unless defined?(RAILS_ENV)
module Rails
+ # Sanity check to make sure this file is only loaded once
+ # TODO: Get to the point where this can be removed.
+ raise "It looks like initializer.rb was required twice" if defined?(Initializer)
+
class Initializer
class Error < StandardError ; end