Merge pull request #440 from mensfeld/main

Make the yaml cache fully thread-safe
dry-rb · Nov 23, 2022 · 269362e · 269362e
2 parents 2ecffb6 + 0b11bb3
commit 269362e
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/dry/schema/messages/yaml.rb b/lib/dry/schema/messages/yaml.rb
@@ -70,7 +70,9 @@ def self.flat_hash(hash, path = EMPTY_ARRAY, keys = {})
 
         # @api private
         def self.cache
-          @cache ||= Concurrent::Map.new { |h, k| h[k] = Concurrent::Map.new }
+          @cache ||= Concurrent::Map.new do |h, k|
+            h.compute_if_absent(k) { Concurrent::Map.new }
+          end
         end
 
         # @api private