Bug #1551: String#slice! 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
On 1.9.2 and 1.9.1 calling String#slice! on a frozen string causes a RuntimeError to be raised even if the method wouldn't have changed the string. This behavior is inconsistent with other operations on frozen strings, and a regression from 1.8.7, on which no exception is raised in this scenario.

The following examples all raise RuntimeErrors on ruby 1.9.2dev (2009-05-28 trunk 23601) [i686-linux]:

"ruby".freeze.slice!(10)
"ruby".freeze.slice!(10,3)
"ruby".freeze.slice!(4,-3)
"ruby".freeze.slice!(10..20)
"ruby".freeze.slice!(/x/)
=end

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Closed

=begin
changed to the opposite way for consistency.

=end