[ruby-core:126049] [Ruby Bug#22191] `Signal.trap(:EXIT)` exception only shown if `at_exit` also raises

11 Jul 2026


      Issue #22191 has been reported by Earlopain (Earlopain _).

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Bug #22191: `Signal.trap(:EXIT)` exception only shown if `at_exit` also raises
https://bugs.ruby-lang.org/issues/22191

* Author: Earlopain (Earlopain _)
* Status: Open
* ruby -v: ruby 4.1.0dev (2026-05-29T14:34:40Z master 7a07a54298) +PRISM [x86_64-linux]
* Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN
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```rb
Signal.trap(:EXIT, proc { raise "foo" })
# No output
```

```rb
Signal.trap(:EXIT, proc { raise "foo" })
at_exit { raise "bar" }
# test.rb:2:in 'block in <main>': bar (RuntimeError)
# test.rb:1:in 'block in <main>': foo (RuntimeError)
```

A bit weird


-- 
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