From: "shia (Sangyong Sim) via ruby-core" <ruby-core@...>
Date: 2024-01-09T09:08:58+00:00
Subject: [ruby-core:116104] [Ruby master Bug#20167] Code execution isn't recorded in Ractor

Issue #20167 has been reported by shia (Sangyong Sim).

----------------------------------------
Bug #20167: Code execution isn't recorded in Ractor
https://bugs.ruby-lang.org/issues/20167

* Author: shia (Sangyong Sim)
* Status: Open
* Priority: Normal
* ruby -v: 3.3.0
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
## reproduction code

```ruby
# frozen-string-literal: true

require "coverage"

Coverage.start

require_relative "./some_lib"
# # some_lib.rb
# class C
#   def hoge(i)
#     i
#   end
# end

r = Ractor.new do
  loop do
    v = Ractor.receive
    ret_v = C.new.hoge(v)

    Ractor.yield ret_v
  end
end

2.times do |i|
  r << i
  r.take
end

Coverage.result.each do |file, lines|
  if file.include?("some_ractor_lib")
    if lines == [1, 1, 2, nil, nil]
      puts "OK"
    else
      puts "expected: [1, 1, 2, nil, nil]"
      puts "actual: #{lines.inspect}"
    end
  end
end
```

## Target ruby version

3.2.0+ affected



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