Add regression test for super access error

Check that access through `super` is rejected when the current class has no
parent class.

Signed-off-by: Lars-Peter Clausen <[email protected]>

ivtest/ivltests/sv_super_member_fail.v

@@ -0,0 +1,11 @@
+// Check that `super` access in a class without a parent class is rejected.
+
+module test;
+
+  class C;
+    function void f;
+      super.x = 1;
+    endfunction
+  endclass
+
+endmodule

ivtest/regress-vvp.list

@@ -288,6 +288,7 @@ sv_package_lifetime		vvp_tests/sv_package_lifetime.json
 sv_package_lifetime_fail	vvp_tests/sv_package_lifetime_fail.json
 sv_parameter_type		vvp_tests/sv_parameter_type.json
 sv_queue_assign_op		vvp_tests/sv_queue_assign_op.json
+sv_super_member_fail		vvp_tests/sv_super_member_fail.json
 sv_wildcard_import8		vvp_tests/sv_wildcard_import8.json
 sdf_header			vvp_tests/sdf_header.json
 task_return1			vvp_tests/task_return1.json

ivtest/vvp_tests/sv_super_member_fail.json

@@ -0,0 +1,5 @@
+{
+    "type"          : "CE",
+    "source"        : "sv_super_member_fail.v",
+    "iverilog-args" : [ "-g2005-sv" ]
+}