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J.15.6 Pragma Unchecked_Union

Syntax

1/3
{AI05-0229-1} The form of a pragma Unchecked_Union, which is a representation pragma (see 13.1), is as follows:
2/3
  pragma Unchecked_Union (first_subtype_local_name);

Legality Rules

3/3
{AI05-0229-1} The first_subtype_local_name of a pragma Unchecked_Union shall denote an unconstrained discriminated record subtype having a variant_part.

Static Semantics

4/3
{AI05-0229-1} A pragma Unchecked_Union specifies that the Unchecked_Union aspect (see B.3.3) for the type denoted by first_subtype_local_name has the value True. 

Wording Changes from Ada 2005

4.a/3
{AI05-0229-1} {AI05-0299-1} This subclause is new. Pragma Unchecked_Union was moved here from B.3.3; aspect Unchecked_Union lives there now. 

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