1 files changed, 31 insertions, 0 deletions
diff --git a/testsuite/synth/issue1909/tb_reproducebug.vhdl b/testsuite/synth/issue1909/tb_reproducebug.vhdl
new file mode 100644
index 000000000..8ebbcdc4a
--- /dev/null
+++ b/testsuite/synth/issue1909/tb_reproducebug.vhdl
@@ -0,0 +1,31 @@
+entity tb_reproducebug is
+end tb_reproducebug;
+
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+architecture behav of tb_reproducebug is
+  signal clk      : std_logic;
+  signal input    : unsigned(7 downto 0);
+  signal output   : unsigned(7 downto 0);
+begin
+  dut: entity work.reproducebug
+    port map (clk, input, output);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end;
+  begin
+    input <= x"14";
+    pulse;
+    assert output = x"0a" severity failure;
+
+    wait;
+  end process;
+end behav;