diff options
Diffstat (limited to 'activesupport')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/object/deep_dup.rb | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/deep_dup.rb b/activesupport/lib/active_support/core_ext/object/deep_dup.rb index ad5b2af161..0e6962a378 100644 --- a/activesupport/lib/active_support/core_ext/object/deep_dup.rb +++ b/activesupport/lib/active_support/core_ext/object/deep_dup.rb @@ -40,8 +40,12 @@ class Hash # dup[:a][:c] # => "c" def deep_dup each_with_object(dup) do |(key, value), hash| - hash.delete(key) - hash[key.deep_dup] = value.deep_dup + if key.frozen? && ::String === key + hash[key] = value.deep_dup + else + hash.delete(key) + hash[key.deep_dup] = value.deep_dup + end end end end |