[ruby-core:122097] [Ruby Bug#21338] TracePoint Not Triggered for Kernel#block_given?

Issue #21338 has been updated by alanwu (Alan Wu).

Status changed from Open to Rejected

It's a C method in 3.4, so you can listen for `:c_call`:

```
ruby -ve 'TracePoint.new(:c_call) { p _1 }.enable { block_given? }'
```

Wether something is a C or Ruby method is not something we guarantee to be stable, though, so it's not a bug now that a different event fires.

----------------------------------------
Bug #21338: TracePoint Not Triggered for Kernel#block_given?
https://bugs.ruby-lang.org/issues/21338#change-113251

* Author: cfis (Charlie Savage)
* Status: Rejected
* ruby -v: ruby 3.4.2 (2025-02-15 revision d2930f8e7a) +PRISM [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
When updating ruby-prof for Ruby 3.4, various tests now fail because a method enter/leave tracepoint is not triggered for `Kernel#block_given?` For example:

https://github.com/ruby-prof/ruby-prof/blob/master/test/line_number_test.rb#L184

In 3.3 a tracepoint was triggered but not in earlier Ruby versions.



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