Ada Reference Manual (Ada 2022 Draft 34)Legal Information
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H.4.1 Aspect No_Controlled_Parts

Static Semantics

For a type, the following type-related, operational aspect may be specified:

The type of this aspect is Boolean. If True, the type and any descendants shall not have any controlled parts. If specified, the value of the expression shall be static. If not specified, the value of this aspect is False.
The No_Controlled_Parts aspect is nonoverridable (see 13.1.1).

Legality Rules

If No_Controlled_Parts is True for a type, no component of the type shall have a controlled part nor shall the type itself be controlled. For the purposes of this rule, a type has a controlled part if its full type has a controlled part; this is applied recursively. In addition to the places where Legality Rules normally apply (see 12.3), this rule also applies in the private part of an instance of a generic unit.
When enforcing the above rule within a generic body G or within the body of a generic unit declared within the declarative region of generic unit G, a generic formal private type of G and a generic formal derived type of G whose ancestor is a tagged type whose No_Controlled_Parts aspect is False are considered to have a controlled part.

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