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bbuchalter/case_test.rb

Last active May 25, 2022 11:31
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Ruby can only parse 2498 case statement branches
Raw
case_test.rb
case_statements = 10000
program = <<-RUBY
case(ARGV[1])
#{case_statements.times.map { |n| "when #{n+1} \n puts #{n+1}"}.join("\n")}
end
RUBY
File.write('test.rb', program)
puts "RUBY_VERSION=#{RUBY_VERSION}"
puts system('ruby test.rb')
=begin
$ ruby case_test.rb
RUBY_VERSION=3.1.2
test.rb:4997: nesting too deep
puts 2498
false
=end
@bbuchalter
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https://github.com/ruby/ruby/blob/v3_1_2/parse.y#L109-L111

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