diff options
Diffstat (limited to 'ext/json/lib/json/pure')
| -rw-r--r-- | ext/json/lib/json/pure/generator.rb | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/ext/json/lib/json/pure/generator.rb b/ext/json/lib/json/pure/generator.rb index b44e42ac41..abc24bf72d 100644 --- a/ext/json/lib/json/pure/generator.rb +++ b/ext/json/lib/json/pure/generator.rb @@ -40,8 +40,8 @@ module JSON # Convert a UTF8 encoded Ruby string _string_ to a JSON string, encoded with # UTF16 big endian characters as \u????, and return it. def utf8_to_json(string) # :nodoc: - string = string.gsub(/["\\\/\x0-\x1f]/) { MAP[$&] } - string.force_encoding(Encoding::ASCII_8BIT) + string = string.dup.force_encoding(Encoding::ASCII_8BIT) + string.gsub!(/["\\\/\x0-\x1f]/) { MAP[$&] } string.gsub!(/( (?: [\xc2-\xdf][\x80-\xbf] | |