[vhdl-200x-ft] Record type conversions

Here is a proposal for record type conversions. The textual, conceptual,
and implementation impact should be light.

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IEEE 200X Fast Track Change Proposal

ID: not yet assigned

Proposer: Ryan Hinton
email: ryan.w.hinton@L-3com.com

Status: Proposed
Proposed: 06/04
Analyzed: Date
Resolved: Date

Enhancement Summary: Record type conversions
Related issues:
Relevant LRM section: 7.3.5

Enhancement Detail:

Allow conversion between record types by adding a "closely related type" to
section 7.3.5:

c) Record Types -- Two record types are closely related if, and only if, all
of the following apply:
-- The types have the same elements.
-- Corresponding elements have the same type.

Also, text should be added on how to perform record type conversions. The
following paragraph should suffice.

If the type mark denotes a record type or subtype, each element of the
operand undergoes an implicit subtype conversion to the subtype of the
corresponding element in the type mark. It is an error if any of these
conversions fail.

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Ryan Hinton
L-3 Communications / Communication Systems - West
ryan.w.hinton@L-3com.com