15699: Fix fencepost error at end of stream.

[arvados.git] / sdk / ruby / lib / arvados / collection.rb

diff --git a/sdk/ruby/lib/arvados/collection.rb b/sdk/ruby/lib/arvados/collection.rb
index 29c7663f7ba521543e542d83da11f7f419a01793..e29deba6c9de314f1deb9c14fd6e723c8e085ac9 100644 (file)
--- a/sdk/ruby/lib/arvados/collection.rb
+++ b/sdk/ruby/lib/arvados/collection.rb
@@ -207,7 +207,7 @@ module Arv
         loop do
           ii = (lo + hi) / 2
           range = @ranges[ii]
-          if range.include?(target) && (target < range.end || ii == hi)
+          if range.include?(target) && (target < range.end || ii == hi-1)
             return ii
           elsif ii == lo
             raise RangeError.new("%i not in segment" % target)