[ruby-core:121253] [Ruby master Bug#21175] Range#max called on a beginles Integer Range with excluded end raises TypeError

6 Mar 2025


      Issue #21175 has been reported by andrykonchin (Andrew Konchin).

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Bug #21175: Range#max called on a beginles Integer Range with excluded end raises TypeError
https://bugs.ruby-lang.org/issues/21175

* Author: andrykonchin (Andrew Konchin)
* Status: Open
* ruby -v: 3.4.2
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
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I would expect that for a Range with Integer right boundary `end - 1` is returned:

```ruby
(nil...10).max
# => (irb):1:in 'Range#max': cannot exclude end value with non Integer begin value (TypeError)
```


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