testsuite/synth: add test for #1139

1 files changed, 28 insertions, 0 deletions

diff --git a/testsuite/synth/issue1139/tb_ent.vhdl b/testsuite/synth/issue1139/tb_ent.vhdl
new file mode 100644
index 000000000..a8f3621ae
--- /dev/null
+++ b/testsuite/synth/issue1139/tb_ent.vhdl
@@ -0,0 +1,28 @@
+entity tb_ent is
+end tb_ent;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_ent is
+  signal a : std_logic;
+  signal b : std_logic;
+  signal z : std_logic;
+begin
+  dut: entity work.ent
+    port map (a, b, z);
+
+  process
+    constant av : std_logic_vector := b"1101";
+    constant bv : std_logic_vector := b"0111";
+    constant zv : std_logic_vector := b"0101";
+  begin
+    for i in av'range loop
+      a <= av (i);
+      b <= bv (i);
+      wait for 1 ns;
+      assert z = zv(i) severity failure;
+    end loop;
+    wait;
+  end process;
+end behav;