3 files changed, 61 insertions, 1 deletions
diff --git a/testsuite/synth/func01/func08b.vhdl b/testsuite/synth/func01/func08b.vhdl
new file mode 100644
index 000000000..8a17cc1cb
--- /dev/null
+++ b/testsuite/synth/func01/func08b.vhdl
@@ -0,0 +1,26 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity func08b is
+  port (v : std_ulogic_vector (3 downto 0);
+        r : out integer);
+end func08b;
+
+architecture behav of func08b is
+  function fls (val: std_ulogic_vector(3 downto 0)) return integer is
+    variable ret: integer;
+  begin
+    ret := 4;
+    for i in val'range loop
+      if val(i) = '1' then
+        ret := 3 - i;
+        exit;
+      end if;
+    end loop;
+
+    return ret;
+  end;
+begin
+  r <= fls(v);
+end behav;
diff --git a/testsuite/synth/func01/tb_func08b.vhdl b/testsuite/synth/func01/tb_func08b.vhdl
new file mode 100644
index 000000000..918225e5c
--- /dev/null
+++ b/testsuite/synth/func01/tb_func08b.vhdl
@@ -0,0 +1,34 @@
+entity tb_func08b is
+end tb_func08b;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_func08b is
+  signal v : std_ulogic_vector(3 downto 0);
+  signal r : integer;
+begin
+  dut: entity work.func08b
+    port map (v, r);
+
+  process
+  begin
+    v <= x"0";
+    wait for 1 ns;
+    assert r = 4 severity failure;
+
+    v <= x"1";
+    wait for 1 ns;
+    assert r = 3 severity failure;
+
+    v <= x"8";
+    wait for 1 ns;
+    assert r = 0 severity failure;
+
+    v <= x"3";
+    wait for 1 ns;
+    assert r = 2 severity failure;
+
+    wait;
+  end process;
+end behav;
diff --git a/testsuite/synth/func01/testsuite.sh b/testsuite/synth/func01/testsuite.sh
index 7c9a78748..956ecc512 100755
--- a/testsuite/synth/func01/testsuite.sh
+++ b/testsuite/synth/func01/testsuite.sh
@@ -2,7 +2,7 @@
 
 . ../../testenv.sh
 
-for t in func01 func02 func03 func04 func05 func06 func07 func08; do
+for t in func01 func02 func03 func04 func05 func06 func07 func08b; do
     analyze $t.vhdl tb_$t.vhdl
     elab_simulate tb_$t
     clean