Bug #21192: Coverage no longer reports coverage information about tracepoint handlers

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 2.6 until now
• Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN

[deivid (David Rodríguez)]

I minimized the issue like this:

repro.rb

require "coverage"

Coverage.start

require_relative "a"

puts Coverage.result

a.rb

TracePoint.trace(:line) do |tp|
  puts "TracePoint handler"
end

puts "Outside"

In Ruby 2.5, program's out was:

$ docker run --rm -it --mount type=bind,source=$(pwd),target=/foo ruby:2.5 ruby /foo/repro.rb
TracePoint handler
Outside
TracePoint handler
{"/foo/a.rb"=>[1, 2, nil, nil, 1]}

In Ruby 2.6 or higher:

$ docker run --rm -it --mount type=bind,source=$(pwd),target=/foo ruby:3.4 ruby /foo/repro.rb
TracePoint handler
Outside
TracePoint handler
{"/foo/a.rb" => [1, 0, nil, nil, 1]}

[mame (Yusuke Endoh)]

This is a duplicate of #16776 that you created, isn't it? :-)

[deivid (David Rodríguez)]

Oh my, I had forgotten about it, sorry for the noise!

[mame (Yusuke Endoh)]

• Status changed from Open to Closed

Don't mind, I understand it as a problem. Others have pointed this problem out to me. We need to convince @ko1 (Koichi Sasada).

Closing this ticket. Continue in #16776.