pragma Component_Alignment ( [Form =>] ALIGNMENT_CHOICE [, [Name =>] type_LOCAL_NAME]); ALIGNMENT_CHOICE ::= Component_Size | Component_Size_4 | Storage_Unit | Default
Specifies the alignment of components in array or record types. The meaning of the Form argument is as follows:
If the Name parameter is present, type_LOCAL_NAME must refer to a local record or array type, and the specified alignment choice applies to the specified type. The use of Component_Alignment together with a pragma Pack causes the Component_Alignment pragma to be ignored. The use of Component_Alignment together with a record representation clause is only effective for fields not specified by the representation clause.
If the Name parameter is absent, the pragma can be used as either a configuration pragma, in which case it applies to one or more units in accordance with the normal rules for configuration pragmas, or it can be used within a declarative part, in which case it applies to types that are declared within this declarative part, or within any nested scope within this declarative part. In either case it specifies the alignment to be applied to any record or array type which has otherwise standard representation.
If the alignment for a record or array type is not specified (using pragma Pack, pragma Component_Alignment, or a record rep clause), the GNAT uses the default alignment as described previously.