Ruby 1.9.2-p136 String access bug

string_19_performance_research.rb

# -*- encoding : utf-8 -*-

require 'benchmark'

#s1 = "aaaaaaaaać" * 2_00
#
#puts Benchmark.measure() {
#  for i in 0..2_000_000 do
#    c = s1[i]
#  end
#}
#
#exit( 0 )

require 'benchmark'

s1 = "ąćęłńóśżź!0123456789"

puts Benchmark.measure {
  1000.times { k = s1[1] }
}

s2 = "ąćęłńóśżź!0123456789" * 100_000

puts Benchmark.measure {
  1000.times { k = s2[1] }
}

exit( 0 )

s = "0123456789ąćęłńóśżź!" * 1_000_000 + "KONIEC"

puts s.size

puts s.bytesize

puts s.encoding

puts "index 1"

puts Benchmark.measure() {
  1000.times { k = s[1] }
}

puts "index 1_000_000"

puts Benchmark.measure() {
  1000.times { k = s[1_000_000] }
}

puts "index 2_000_000"

puts Benchmark.measure() {
  1000.times { k = s[20_000_000] }
}