File: t_class_virtual_chain_ctor.v

package info (click to toggle)
verilator 5.038-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 162,552 kB
  • sloc: cpp: 139,204; python: 20,931; ansic: 10,222; yacc: 6,000; lex: 1,925; makefile: 1,260; sh: 494; perl: 282; fortran: 22
file content (34 lines) | stat: -rw-r--r-- 834 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
// DESCRIPTION: Verilator: Check that an abstract class' contstructor
// can be called indirectly from a constructor of a derived class.
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2023 by Ilya Barkov
// SPDX-License-Identifier: CC0-1.0

// It's illegal to call
//     VBase b = new;
// see t_class_virtual_bad
virtual class VBase;
   function new(); endfunction
endclass

// Another constructor of an abstact class in the chain
virtual class VChild1 extends VBase;
   function new();
      super.new();
   endfunction
endclass

// It shall be perfectly fine to create an instance of a
// non-abstract VChild2
class VChild2 extends VChild1;
   function new();
      super.new();
   endfunction
endclass

module t;
   initial begin
      VChild2 c = new;
   end
endmodule