testsuite/gna: add case from #1226

1 files changed, 20 insertions, 0 deletions

diff --git a/testsuite/gna/issue1226/adder.vhdl b/testsuite/gna/issue1226/adder.vhdl
new file mode 100644
index 000000000..a3c6acdf6
--- /dev/null
+++ b/testsuite/gna/issue1226/adder.vhdl
@@ -0,0 +1,20 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity adder is
+   port
+   (
+      nibble1, nibble2 : in unsigned(3 downto 0); 
+      sum       : out unsigned(3 downto 0); 
+      carry_out : out std_logic
+   );
+end entity adder;
+ 
+architecture behavioral of adder is
+   signal temp : unsigned(4 downto 0); 
+begin 
+   temp <= ("0" & nibble1) + nibble2; 
+   sum       <= temp(3 downto 0); 
+   carry_out <= temp(4);
+end architecture behavioral;