1 files changed, 23 insertions, 0 deletions
diff --git a/testsuite/synth/issue2013/tb_tc4.vhdl b/testsuite/synth/issue2013/tb_tc4.vhdl
new file mode 100644
index 000000000..188651670
--- /dev/null
+++ b/testsuite/synth/issue2013/tb_tc4.vhdl
@@ -0,0 +1,23 @@
+entity tb_tc4 is
+end tb_tc4;
+
+architecture behav of tb_tc4 is
+  signal state : bit;
+  signal o     : bit_vector(3 downto 0);
+begin
+  dut: entity work.tc4
+    port map (state, o);
+
+  process
+  begin
+    state <= '0';
+    wait for 1 ns;
+    assert o = "0111" severity failure;
+
+    state <= '1';
+    wait for 1 ns;
+    assert o = "1000" severity failure;
+
+    wait;
+  end process;
+end behav;