Issue #15751 has been reported by jeremyevans0 (Jeremy Evans).

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Feature #15751: Add FrozenError#receiver
https://bugs.ruby-lang.org/issues/15751

* Author: jeremyevans0 (Jeremy Evans)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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Similar to NameError#receiver, this returns the object on which
the modification was attempted.  This is useful as it can pinpoint
exactly what is frozen, as in many cases when a FrozenError is
raised, you cannot determine from the context which object is
frozen that you expect not to be.

I'm not sure that using name_err_receiver as the C function for
FrozenError#receiver is acceptable, but it doesn't appear to cause
problems.

Users of the current rb_error_frozen C function will have to switch
to using rb_error_frozen_object or the new rb_raise_frozen_error
in order to set the receiver of the FrozenError.

Patch to implement this feature is attached.

---Files--------------------------------
Add-FrozenError-receiver.patch (6.48 KB)


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