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-rw-r--r--activesupport/lib/active_support/per_thread_registry.rb11
1 files changed, 8 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/per_thread_registry.rb b/activesupport/lib/active_support/per_thread_registry.rb
index ca2e4d5625..88e2b12cc7 100644
--- a/activesupport/lib/active_support/per_thread_registry.rb
+++ b/activesupport/lib/active_support/per_thread_registry.rb
@@ -1,4 +1,9 @@
+require 'active_support/core_ext/module/delegation'
+
module ActiveSupport
+ # NOTE: This approach has been deprecated for end-user code in favor of thread_mattr_accessor and friends.
+ # Please use that approach instead.
+ #
# This module is used to encapsulate access to thread local variables.
#
# Instead of polluting the thread locals namespace:
@@ -43,9 +48,9 @@ module ActiveSupport
protected
def method_missing(name, *args, &block) # :nodoc:
# Caches the method definition as a singleton method of the receiver.
- define_singleton_method(name) do |*a, &b|
- instance.public_send(name, *a, &b)
- end
+ #
+ # By letting #delegate handle it, we avoid an enclosure that'll capture args.
+ singleton_class.delegate name, to: :instance
send(name, *args, &block)
end