From: "kddnewton (Kevin Newton) via ruby-core" <ruby-core@...>
Date: 2024-05-08T18:43:32+00:00
Subject: [ruby-core:117813] [Ruby master Bug#20479] Ensure line number in begin...end in method

Issue #20479 has been reported by kddnewton (Kevin Newton).

----------------------------------------
Bug #20479: Ensure line number in begin...end in method
https://bugs.ruby-lang.org/issues/20479

* Author: kddnewton (Kevin Newton)
* Status: Open
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
In the following example:

```ruby
def foo
  begin
  rescue
    p :rescue
  ensure
    p :ensure
  end
end
```

the ISEQ has the label: `#<ISeq:ensure in foo@test.rb:6 (6,4)-(6,13)>`, but tracepoint reports that `first_lineno` is 1. This is coming straight from the AST, which says `@ NODE_ENSURE (id: 12, line: 1, location: (2,7)-(6,13))`.

This seems incorrect. The `rescue` knows that its line starts on line 3, but `ensure` says it starts on line 1. Could we change that to reflect the actual line it's on?



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