[ruby-core:122296] [Ruby Bug#21374] FrozenError message is inconsistent when a singleton method is defined on a frozen object

[ruby-core:122296] [Ruby Bug#21374] FrozenError message is inconsistent when a singleton method is defined on a frozen object

[andrykonchin (Andrew Konchin) via ruby-core]

Issue #21374 has been reported by andrykonchin (Andrew Konchin).

----------------------------------------
Bug #21374: FrozenError message is inconsistent when a singleton method is defined on a frozen object
https://bugs.ruby-lang.org/issues/21374

* Author: andrykonchin (Andrew Konchin)
* Status: Open
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
I would expect a message to contain an object class (e.g. `can't modify frozen <class>: <object#inspect>`) when an ordinary frozen object (non a module or class) is being modified. It works this way in the following example:

```ruby
object = []; object.freeze; object.instance_variable_set(:@a, 42)
# (irb):5:in `instance_variable_set': can't modify frozen Array: [] (FrozenError)
```

But it doesn't in the following example:

```ruby
object = []; object.freeze; def object.x; end
# (irb):4:in `<main>': can't modify frozen object: [] (FrozenError)
```



-- 
https://bugs.ruby-lang.org/
 ______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
 To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
 ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/

[ruby-core:122435] [Ruby Bug#21374] FrozenError message is inconsistent when a singleton method is defined on a frozen object

[matz (Yukihiro Matsumoto) via ruby-core]

Issue #21374 has been updated by matz (Yukihiro Matsumoto).


I agree with you. It should be consistent (and I prefer `can't modify frozen Array: [] (FrozenError)` message). But there might be some internal reason. We have to investigate first.

Matz.




----------------------------------------
Bug #21374: FrozenError message is inconsistent when a singleton method is defined on a frozen object
https://bugs.ruby-lang.org/issues/21374#change-113616

* Author: andrykonchin (Andrew Konchin)
* Status: Open
* ruby -v: 3.4.2
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
I would expect a message to contain an object class (e.g. `can't modify frozen <class>: <object#inspect>`) when an ordinary frozen object (non a module or class) is being modified. It works this way in the following example:

```ruby
object = []; object.freeze; object.instance_variable_set(:@a, 42)
# (irb):5:in `instance_variable_set': can't modify frozen Array: [] (FrozenError)
```

But it doesn't in the following example:

```ruby
object = []; object.freeze; def object.x; end
# (irb):4:in `<main>': can't modify frozen object: [] (FrozenError)
```



-- 
https://bugs.ruby-lang.org/
______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
 To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
 ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/