VASG Issue Number:      0180
Comment Author:         Clive Charlwood for Sivaram Nayudu
Comment Number:         01
Comment Date:           1991/03/22

Analysis is based design unit not on design unit because LRM 11.4 specifies
that a primary unit must be analyzed prior to the analysis of any
corresponding secondary unit. If we disallow two design units with same
name in a design file, there are potential problems.

First case is differentiating re-analysis of the same file after some error(s)
in the file in one or more of the design design units. Now we have to address
the issue of re-analyzing the same file.

Second case is design unit with the same name but these two design units
reside in two different design files.

Conclusion:
    Either 10.2 or 10.4 of LRM should include:
        It is not an error to have two design units with the same name in a
        design file or different files. The last analyzed design unit will be
        contained in the design library as a result of the order of analysis
        of design units contained in a design file.