RE: [sv-bc] packed array question

 
Steve,

I agree with what you say except that whatever you can declare as a typedef
would
not be able to appear as an anonymous type for a variable declaration.

Francoise
    '
-----Original Message-----
From: owner-sv-bc@eda.org [mailto:owner-sv-bc@eda.org] On Behalf Of Steven
Sharp
Sent: Friday, December 16, 2005 1:58 PM
To: Dave_Rich@mentor.com; fm; sv-bc@eda.org
Subject: RE: [sv-bc] packed array question

As I understood it, the only reason that packed arrays of integer were not
allowed was fear of backward incompatibility with legacy code that used
declarations like

  integer [7:0] i;
  
This was illegal, but Verilog-XL accepted it and ignored the range.  If this
were allowed in SystemVerilog, but with a different meaning, it would change
the meaning of this legacy (illegal) code.

Since a typedef for integer could never appear in legacy code, I don't see
how this problem applies in that case.  And since the predefined integer
types are all packed types, I don't see any other technical reasons why it
should not be legal to use them as elements in packed arrays.

Steven Sharp
sharp@cadence.com