If the nondefault bit ordering
applies to the composite type, and if a
component_clause
specifies the placement of C, denotes the value given for the
position
of the
component_clause;
otherwise, denotes the same value as R.C'Address – R'Address. The
value of this attribute is of the type
universal_integer.
If the nondefault bit ordering
applies to the composite type, and if a
component_clause
specifies the placement of C, denotes the value given for the
first_bit
of the
component_clause;
otherwise, denotes the offset, from the start of the first of the storage
elements occupied by C, of the first bit occupied by C. This offset is
measured in bits. The first bit of a storage element is numbered zero.
The value of this attribute is of the type
universal_integer.
If the nondefault bit ordering
applies to the composite type, and if a
component_clause
specifies the placement of C, denotes the value given for the
last_bit
of the
component_clause;
otherwise, denotes the offset, from the start of the first of the storage
elements occupied by C, of the last bit occupied by C. This offset is
measured in bits. The value of this attribute is of the type
universal_integer.
If a component
is represented using some form of pointer (such as an offset) to the
actual data of the component, and this data is contiguous with the rest
of the object, then the storage place attributes should reflect the place
of the actual data, not the pointer. If a component is allocated discontiguously
from the rest of the object, then a warning should be generated upon
reference to one of its storage place attributes.
Ada 2005 and 2012 Editions sponsored in part by Ada-Europe