Add regression test for classes in generate blocks

Check that a class declared in a conditional generate block can be used.
Also check that classes declared in a generate loop get separate class scopes
for each generated instance.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

ivtest/ivltests/br_gh1384.v

@@ -0,0 +1,50 @@
+// Check that classes declared inside generate blocks can be used.
+
+module test;
+
+  reg failed;
+
+  `define check(val, exp) \
+    if (val !== exp) begin \
+      $display("FAILED(%0d). '%s' expected %0d, got %0d", `__LINE__, \
+               `"val`", exp, val); \
+      failed = 1'b1; \
+    end
+
+  if (1) begin : g
+    class C;
+      int value;
+
+      function new(int value);
+        this.value = value;
+      endfunction
+    endclass
+
+    C c = new(42);
+  end
+
+  for (genvar i = 0; i < 2; i = i + 1) begin : h
+    class C;
+      int value;
+
+      function new(int value);
+        this.value = value + i;
+      endfunction
+    endclass
+
+    C c = new(10);
+  end
+
+  initial begin
+    failed = 1'b0;
+
+    `check(g.c.value, 42);
+    `check(h[0].c.value, 10);
+    `check(h[1].c.value, 11);
+
+    if (!failed) begin
+      $display("PASSED");
+    end
+  end
+
+endmodule

ivtest/regress-vvp.list

@@ -82,6 +82,7 @@ br_gh1258a			vvp_tests/br_gh1258a.json
 br_gh1258b			vvp_tests/br_gh1258b.json
 br_gh1286			vvp_tests/br_gh1286.json
 br_gh1323			vvp_tests/br_gh1323.json
+br_gh1384			vvp_tests/br_gh1384.json
 br_gh1385			vvp_tests/br_gh1385.json
 br_gh1385a			vvp_tests/br_gh1385a.json
 br_gh1385b			vvp_tests/br_gh1385b.json

ivtest/vvp_tests/br_gh1384.json

@@ -0,0 +1,9 @@
+{
+    "type"          : "normal",
+    "source"        : "br_gh1384.v",
+    "iverilog-args" : [ "-g2005-sv" ],
+    "vlog95" : {
+        "__comment"     : "Classes are not supported",
+        "type"          : "CE"
+    }
+}