[ruby-core:111422] [Ruby master Bug#19257] Data that defines a member called hash

Issue #19257 has been reported by solnic (Peter Solnica).

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Bug #19257: Data that defines a member called hash
https://bugs.ruby-lang.org/issues/19257

* Author: solnic (Peter Solnica)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.2.0 (2022-12-25 revision a528908271) [x86_64-darwin22]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
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I believe this should raise an error given that `Data#hash` exists as a pre-defined core method and serves a very specific purpose:

``` ruby
data = Data.define(:hash)

obj = data.new(hash: "foo")

obj.hash
# => "foo"
```

An alternative would be to make `obj[:hash]` return the value of the member and `obj.hash` would return the hash of the object, but that could be confusing.




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