VHDL Issue Number:      0129
Classification:         Language Definition Problem
Language Version:       VHDL-87
Summary:                Name space in named associations is unnecessarily complex.
Related Issues:         
Relevant LRM Sections:  4.3.3.2
Key Words and Phrases:  Named Associations, Formal Parameters
Current Status:         Submitted
1076-1993 Disposition:  Closed (All Issues Completely Addressed)
Disposition Rationale:  Section 10.3 was revised.
Superseded By:          N/A
-----------------------
Date Submitted:             1989/06/21
Author of Submission:   Rod Farrow
Author's Affiliation:   Vantage Analysis Systems, Inc.
Author's Post Address:  42840 Christy St., Suite 201
                        Fremont, CA   94538
Author's Phone Number:  (415) 659-0901
Author's Fax Number:    
Author's Net Address:   N/A
-----------------------
Date Analyzed:          TBD
Author of Analysis:     TBD
Revision Number:        $Revision: 1.9 $
Date Last Revised:      $Date: 1995/08/04 01:36:30 $


Description of Problem
----------------------
   In a named association, before the association operator
      "=>",
   the names of the formal parameters 
   of the subprogram/entity share the namespace with all other names normally in the 
   namespace, and neither displace homonyms nor cause errors if there already 
   exist homonyms.  This can be especially bothersome to implement for overloaded 
   subprograms because until the overloading is resolved one doesn't know what 
   formal parameter names are legitimately in the namespace, but one must know 
   what names mean (and hence what is legitimately in the namespace) in order 
   to do overload resolution.  

Proposed Resolution
-------------------
   We propose that the names of formal parameters be legitimately referenced
   ONLY as the leading simple name of a formal designator, and that they not
   be generally visible in the source text immediately before the association
   operator.

VASG-ISAC Analysis & Rationale
------------------------------


VASG-ISAC Recommendation for IEEE Std 1076-1987
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VASG-ISAC Recommendation for Future Revisions
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