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-rw-r--r--mrblib/enum.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/mrblib/enum.rb b/mrblib/enum.rb
index 650d24302..fb55efcf8 100644
--- a/mrblib/enum.rb
+++ b/mrblib/enum.rb
@@ -383,7 +383,7 @@ module Enumerable
h = 12347
i = 0
self.each do |e|
- n = e.hash << (i % 16)
+ n = (e.hash & (0x7fffffff >> (i % 16))) << (i % 16)
h ^= n
i += 1
end