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-rw-r--r--activesupport/lib/active_support/inflector/transliterate.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/inflector/transliterate.rb b/activesupport/lib/active_support/inflector/transliterate.rb
index 3ba2d93ed8..1899a1212d 100644
--- a/activesupport/lib/active_support/inflector/transliterate.rb
+++ b/activesupport/lib/active_support/inflector/transliterate.rb
@@ -60,6 +60,7 @@ module ActiveSupport
# Transliteration is restricted to UTF-8, US-ASCII and GB18030 strings
# Other encodings will raise an ArgumentError.
def transliterate(string, replacement = "?", locale: nil)
+ string = string.dup if string.frozen?
raise ArgumentError, "Can only transliterate strings. Received #{string.class.name}" unless string.is_a?(String)
allowed_encodings = [Encoding::UTF_8, Encoding::US_ASCII, Encoding::GB18030]