mruby/mruby — pull request #2668 by sdottaka (2014-12-12 14:07:23+00:00)
Title: Fix crash if #inspect does not return a string value

case 1
~~~
class A; def inspect; 1; end; end
A.new.a
~~~

case 2

~~~
class A
def self.inspect
1
end
alias_method :a, :b
end
~~~