* lib/mathn.rb (Integer::prime_division): raise ZeroDivisionError

  on zeros.  [ruby-dev:28739]

* version.h: 1.8.5 - prepare for preview1.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10333 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/mathn.rb b/lib/mathn.rb
index 14e2e9272c..a5a121c6c6 100644
--- a/lib/mathn.rb
+++ b/lib/mathn.rb
@@ -43,6 +43,7 @@ class Integer
   end
   
   def prime_division
+    raise ZeroDivisionError if self == 0
     ps = Prime.new
     value = self
     pv = []