From: "k0kubun (Takashi Kokubun) via ruby-core" <ruby-core@...>
Date: 2025-07-21T21:45:37+00:00
Subject: [ruby-core:122834] [Ruby Bug#21259] The Prism compiler wrongly creates a line number of zero

Issue #21259 has been updated by k0kubun (Takashi Kokubun).

Backport changed from 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: REQUIRED to 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: DONE

ruby_3_4 commit:8b505a286080fead52a603fcd2761c2d6b3e3aec merged revision(s) commit:148db9c80f11af1780f0f3685201f28de8f6b47a.

----------------------------------------
Bug #21259: The Prism compiler wrongly creates a line number of zero
https://bugs.ruby-lang.org/issues/21259#change-114123

* Author: mame (Yusuke Endoh)
* Status: Closed
* Assignee: prism
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: DONE
----------------------------------------
test.rb
```
TracePoint.new(:line) do |tp|
  p tp
end.enable

load "./target.rb"
```

target.rb
```
if true..true
end
```

```
$ ~/work/ruby/local/bin/ruby --parser=prism test.rb
#<TracePoint:line test.rb:5>
#<TracePoint:line /tmp/reproduce-simplecov-ruby34-bug/target.rb:0> # <=== This lineno should be 1

$ ~/work/ruby/local/bin/ruby --parser=parse.y test.rb
#<TracePoint:line test.rb:5>
#<TracePoint:line /tmp/reproduce-simplecov-ruby34-bug/target.rb:1>
```



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