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wraithgar/bug.rb

Created December 5, 2019 17:13
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ruby strftime/strptime bug
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bug.rb
require 'date'
Date.strptime(Date.new(2006,1,1).strftime('%U-%Y'), '%U-%Y')
#<Date: 2006-01-01 ((2453737j,0s,0n),+0s,2299161j)>
Date.strptime(Date.new(2000,12,31).strftime('%U-%Y'), '%U-%Y')
#<Date: 2000-12-31 ((2451910j,0s,0n),+0s,2299161j)>
Date.strptime(Date.new(2001,1,7).strftime('%U-%Y'), '%U-%Y')
#<Date: 2001-01-07 ((2451917j,0s,0n),+0s,2299161j)>
Date.strptime(Date.new(2001,1,1).strftime('%U-%Y'), '%U-%Y')
# Traceback
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