Bug #1552: String#strip! raises RuntimeError on Frozen String Despite Making No Changes

• Status: Closed
• Assignee: -
• Target version: 2.0.0
• ruby -v: ruby 1.9.2dev (2009-05-28 trunk 23601) [i686-linux]

[runpaint (Run Paint Run Run)]

=begin
Calling String#strip! on a frozen string raises a RuntimeError even if the string was not changed. String#rstrip! doesn't raise an exception in this scenario. I believe that the latter behaviour is correct; #strip! should only raise a RuntimeError if the string would be changed.

$ rubybleed -ve '"ruby".freeze.strip!'
ruby 1.9.2dev (2009-05-28 trunk 23601) [i686-linux]
-e:1:in strip!': can't modify frozen string (RuntimeError) from -e:1:in '

$ rubybleed -ve '"ruby".freeze.rstrip!'
ruby 1.9.2dev (2009-05-28 trunk 23601) [i686-linux]

1.9.1 behaves the same as 1.9.2. 1.8.7 behaves correctly.
=end

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Closed

=begin
changed to the opposite way for consistency.
=end