[sv-bc] legal operators for unpacked arrays, structs, unions, classes?

I cannot find anywhere in the LRM what are the operators which 
are allowed on unpacked structs, unpacked unions or classes.
For arrays only equality/inequality are allowed (section 5.2).
It also says that comparing aggregate expressions require that they have
equivalent types (section 8.15)
 
Presumably the only operators allowed as equality (==) and inequality (!=)
and true and false expressions of  a ternary conditional operator?
 
What about the case equality/inequality and the wild card
equality/inequality? 
Are they allowed on unpacked types?
 
Francoise
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