synth: add a test for previous commit.

1 files changed, 20 insertions, 0 deletions

diff --git a/testsuite/synth/func01/func02.vhdl b/testsuite/synth/func01/func02.vhdl
new file mode 100644
index 000000000..9476c9130
--- /dev/null
+++ b/testsuite/synth/func01/func02.vhdl
@@ -0,0 +1,20 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity func02 is
+  port (a : std_logic_vector (7 downto 0);
+        b : out std_logic_vector (7 downto 0));
+end func02;
+
+architecture behav of func02 is
+  function gen_mask (len : natural) return std_logic_vector is
+    variable res : std_logic_vector (len - 1 downto 0);
+  begin
+    res := (0 => '1', others => '0');
+    return res;
+  end gen_mask;
+
+begin
+  b <= a and gen_mask (8);
+end behav;
+