[erlang-bugs] jinterface 1.4.2 : OtpErlangRef missing hashCode method

[Paul Guyot]

Hello,

OtpErlangRef class (and probably others) is missing the hashCode  
method, while it overrides the equal method. As a result, refs cannot  
be put in a hash structure (e.g. HashMap).

final HashMap<OtpErlangRef, Object> myMap = new HashMap<OtpErlangRef,  
Object>();
myMap.put(ref1, obj1);
assertNotNull(myMap.get(ref1));	// <-- fails

The attached patch adds an implementation of hashCode for  
OtpErlangRef, which is compatible with the equal method.

Regards,

Paul
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