1 files changed, 50 insertions, 0 deletions
diff --git a/testsuite/synth/issue1225/tb_top.vhdl b/testsuite/synth/issue1225/tb_top.vhdl
new file mode 100644
index 000000000..13666fee5
--- /dev/null
+++ b/testsuite/synth/issue1225/tb_top.vhdl
@@ -0,0 +1,50 @@
+entity tb_top is
+end tb_top;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_top is
+  signal clk : std_logic;
+  signal en : std_logic;
+  signal a, b : std_logic;
+  signal p, q : std_logic;
+begin
+  dut: entity work.top
+    port map (clk, en, a, b, p, q);
+
+  process
+    procedure pulse is
+    begin
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+      clk <= '0';
+    end pulse;
+  begin
+    clk <= '0';
+
+    a <= '1';
+    b <= '0';
+    en <= '0';
+    pulse;
+    assert p = '0' severity failure;
+    assert q = '0' severity failure;
+
+    a <= '1';
+    b <= '1';
+    en <= '0';
+    pulse;
+    assert p = '0' severity failure;
+    assert q = '1' severity failure;
+
+    a <= '1';
+    b <= '1';
+    en <= '1';
+    pulse;
+    assert p = '1' severity failure;
+    assert q = '1' severity failure;
+
+    wait;
+  end process;
+end behav;