Eric Barendt created JRUBY-6380:
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Summary: Original array is overwritten when select! is called on a
copy
Key: JRUBY-6380
URL: https://jira.codehaus.org/browse/JRUBY-6380
Project: JRuby
Issue Type: Bug
Components: Standard Library
Affects Versions: JRuby 1.6.5
Environment: JRuby 1.6.5 on Linux and Windows with Java 7
Reporter: Eric Barendt
Assignee: Thomas E Enebo
# Sample code that shows the problem (test.rb):
# Create an array
array = %w(value1 value2 a_value value2)
# Print the whole array
puts array.inspect
# Copy and modify an array
new_array = Array.new(array)
new_array.select! { |element| element.start_with?("value") }
puts new_array.inspect
puts array.inspect
# Output of the above code:
# jruby --1.9 test.rb
#["value1", "value2", "a_value", "value2"]
#["value1", "value2", "value2"]
#["value1", "value2", "value2", "value2"]
# rvm use 1.9.3
# ruby test.rb
#["value1", "value2", "a_value", "value2"]
#["value1", "value2", "value2"]
#["value1", "value2", "a_value", "value2"]
A GitHub pull request to fix this issue:
https://github.com/jruby/jruby/pull/114
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