Test class parsing (intended as part of last commit).

test_regress/t/t_class_unsup_bad.out

@@ -0,0 +1,31 @@
+%Error: t/t_class_unsup_bad.v:6: Unsupported: virtual interface
+virtual interface vi_t vi;
+^~~~~~~
+%Error: t/t_class_unsup_bad.v:7: Unsupported: virtual data type
+virtual vi_t vi2;
+^~~~~~~
+%Error: t/t_class_unsup_bad.v:12: Unsupported: classes
+class C #(parameter P=1);
+^~~~~
+%Error: t/t_class_unsup_bad.v:13: Unsupported: class parameters
+   localparam LOCPAR = 10;
+                         ^
+%Error: t/t_class_unsup_bad.v:16: Unsupported: 'local' class item
+   local int loc;
+   ^~~~~
+%Error: t/t_class_unsup_bad.v:24: Unsupported: virtual class member qualifier
+   virtual function void func_virtual; endfunction
+   ^~~~~~~
+%Error: t/t_class_unsup_bad.v:25: Unsupported: pure virtual class method
+   pure virtual function void func_pure_virtual; endfunction
+   ^~~~
+%Error: t/t_class_unsup_bad.v:25: syntax error, unexpected endfunction
+   pure virtual function void func_pure_virtual; endfunction
+                                                 ^~~~~~~~~~~
+%Error: t/t_class_unsup_bad.v:31: Unsupported: virtual classes
+virtual class VC;
+^~~~~~~
+%Error: t/t_class_unsup_bad.v:31: Unsupported: classes
+virtual class VC;
+        ^~~~~
+%Error: Exiting due to

test_regress/t/t_class_unsup_bad.pl

@@ -0,0 +1,18 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2019 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.
+
+scenarios(vlt => 1);
+
+lint(
+    fails => 1,
+    expect_filename => $Self->{golden_filename},
+    );
+
+ok(1);
+1;

test_regress/t/t_class_unsup_bad.v

@@ -0,0 +1,35 @@
+// DESCRIPTION: Verilator: Verilog Test module
+//
+// This file ONLY is placed into the Public Domain, for any use,
+// without warranty, 2019 by Wilson Snyder.
+
+virtual interface vi_t vi;
+virtual vi_t vi2;
+
+typedef class c;
+typedef interface class ic;
+
+class C #(parameter P=1);
+   localparam LOCPAR = 10;
+   int  imember;
+
+   local int loc;
+   protected int prot;
+
+   rand int irand;
+   randc int icrand;
+
+   task classtask; endtask
+   function int classfunc; endfunction
+   virtual function void func_virtual; endfunction
+   pure virtual function void func_pure_virtual; endfunction
+   automatic function void func_automatic; endfunction
+   const function void func_const; endfunction
+   extern task exttask;
+endclass
+
+virtual class VC;
+endclass
+
+module t (/*AUTOARG*/);
+endmodule