Tests: Add t_class_param_pkg test.

test_regress/t/t_class_param_pkg.out

@@ -0,0 +1,9 @@
+%Error: t/t_class_param_pkg.v:51:16: Syntax Error: Not expecting CLASSORPACKAGEREF under a DOT in dotted expression
+   51 |       if (Pkg::Cls#()::PBASE != 12) $stop;
+      |                ^~~
+%Error: t/t_class_param_pkg.v:51:21: Syntax Error: Not expecting PIN under a CLASSORPACKAGEREF in dotted expression
+   51 |       if (Pkg::Cls#()::PBASE != 12) $stop;
+      |                     ^
+%Error: Internal Error: t/t_class_param_pkg.v:51:21: ../V3LinkDot.cpp:#: Pin not under instance?
+   51 |       if (Pkg::Cls#()::PBASE != 12) $stop;
+      |                     ^

test_regress/t/t_class_param_pkg.pl

@@ -0,0 +1,23 @@
+#!/usr/bin/env perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2020 by Wilson Snyder. This program is free software; you
+# can redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
+
+scenarios(simulator => 1);
+
+compile(
+    fails => $Self->{vlt_all},
+    expect_filename => $Self->{golden_filename},
+    );
+
+execute(
+    check_finished => 1,
+    ) if !$Self->{vlt_all};
+
+ok(1);
+1;

test_regress/t/t_class_param_pkg.v

@@ -0,0 +1,87 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed under the Creative Commons Public Domain, for
+// any use, without warranty, 2020 by Wilson Snyder.
+// SPDX-License-Identifier: CC0-1.0
+
+`define checks(gotv,expv) do if ((gotv) != (expv)) begin $write("%%Error: %s:%0d:  got='%s' exp='%s'\n", `__FILE__,`__LINE__, (gotv), (expv)); $stop; end while(0);
+
+// See also t_class_param_mod.v
+
+package Pkg;
+   typedef class Cls;
+
+   class Wrap #(parameter P = 13);
+      function int get_p;
+         return c1.get_p();
+      endfunction
+      function new;
+         c1 = new;
+      endfunction
+      Cls#(PMINUS1 + 1) c1;
+      localparam PMINUS1 = P - 1;  // Checking works when last
+   endclass
+
+   class Cls #(parameter PBASE = 12);
+      bit [PBASE-1:0] member;
+      function bit [PBASE-1:0] get_member;
+         return member;
+      endfunction
+      static function int get_p;
+         return PBASE;
+      endfunction
+      typedef enum    { E_PBASE = PBASE } enum_t;
+   endclass
+
+   typedef Pkg::Cls#(8) Cls8_t;
+
+endpackage
+
+module t (/*AUTOARG*/);
+
+   Pkg::Cls c12;
+   Pkg::Cls #(.PBASE(4)) c4;
+   Pkg::Cls8_t c8;
+   Pkg::Wrap #(.P(16)) w16;
+   initial begin
+      c12 = new;
+      c4 = new;
+      c8 = new;
+      w16 = new;
+      if (Pkg::Cls#()::PBASE != 12) $stop;
+      if (Pkg::Cls#(4)::PBASE != 4) $stop;
+      if (Pkg::Cls8_t::PBASE != 8) $stop;
+
+      if (Pkg::Cls#()::E_PBASE != 12) $stop;
+      if (Pkg::Cls#(4)::E_PBASE != 4) $stop;
+      if (Pkg::Cls8_t::E_PBASE != 8) $stop;
+
+      if (c12.PBASE != 12) $stop;
+      if (c4.PBASE != 4) $stop;
+      if (c8.PBASE != 8) $stop;
+
+      if (Pkg::Cls#()::get_p() != 12) $stop;
+      if (Pkg::Cls#(4)::get_p() != 4) $stop;
+      if (Pkg::Cls8_t::get_p() != 8) $stop;
+
+      if (c12.get_p() != 12) $stop;
+      if (c4.get_p() != 4) $stop;
+      if (c8.get_p() != 8) $stop;
+      if (w16.get_p() != 16) $stop;
+
+      // verilator lint_off WIDTH
+      c12.member = 32'haaaaaaaa;
+      c4.member = 32'haaaaaaaa;
+      c8.member = 32'haaaaaaaa;
+      // verilator lint_on WIDTH
+      if (c12.member != 12'haaa) $stop;
+      if (c4.member != 4'ha) $stop;
+      if (c12.get_member() != 12'haaa) $stop;
+      if (c4.get_member() != 4'ha) $stop;
+      `checks($sformatf("%p", c12), "'{member:'haaa}");
+      `checks($sformatf("%p", c4), "'{member:'ha}");
+
+      $write("*-* All Finished *-*\n");
+      $finish;
+   end
+endmodule