component values into a composite value of an array type, record type,
or record extension.
Name Resolution Rules
The expected type for an aggregate
shall be a single array type, record type, or record extension.
shall not be of a class-wide type.
For the evaluation of an aggregate
an anonymous object is created and values for the components or ancestor
part are obtained (as described in the subsequent subclause for each
kind of the aggregate
and assigned into the corresponding components or ancestor part of the
Obtaining the values and the assignments
occur in an arbitrary order. The value of the aggregate
is the value of this object.
If an aggregate
is of a tagged type, a check is made that its value belongs to the first
subtype of the type.
Constraint_Error is raised if
this check fails.