From: Laurent Sansonetti <redmine@...>
Date: 2009-04-13T14:45:44+09:00
Subject: [ruby-core:23190] [Bug #1376] inline symbols/fixnums in a case expression do not honor an overwritten #=== method

Bug #1376: inline symbols/fixnums in a case expression do not honor an overwritten #=== method
http://redmine.ruby-lang.org/issues/show/1376

Author: Laurent Sansonetti
Status: Open, Priority: Normal
Category: core, Target version: 1.9.1
ruby -v: ruby 1.9.1 (2008-12-28 patchlevel-5000 trunk 21107) [i386-darwin9.5.0]

The case expression in Ruby 1.9 does not seem to honor the fact that Symbol#=== could have been overwritten prior to the expression.

An example with both Ruby 1.8 and Ruby 1.9:

$ ruby -e "class Symbol; def ===(o); p 42; true; end; end; case :foo; when :foo; end"
42

$ ruby19 -e "class Symbol; def ===(o); p 42; true; end; end; case :foo; when :foo; end"
$ 

The same problem seems to exist with fixnums as well.


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