interface conversion respects shadowed variables

test/basic/interface_task.sv

@@ -0,0 +1,29 @@
+interface I;
+    task x;
+        input logic [31:0] i;
+        $display("I x(%0d)", i);
+    endtask
+endinterface
+
+module top;
+    I i();
+    logic [31:0] w = 31;
+    logic [31:0] y = 42;
+    typedef struct packed { logic [31:0] x, y; } E;
+    task x;
+        input E i;
+        $display("x('{%0d, %0d})", i.x, i.y);
+    endtask
+    task automatic z;
+        input E t;
+        begin : foo
+            E i = t;
+            $display("z('{%0d, %0d})", i.x, i.y);
+        end
+    endtask
+    initial begin
+        i.x(y);
+        x({w, y});
+        z({w, y});
+    end
+endmodule