testsuite/synth: add a test for #1945

1 files changed, 20 insertions, 0 deletions

diff --git a/testsuite/synth/issue1945/alias02.vhdl b/testsuite/synth/issue1945/alias02.vhdl
new file mode 100644
index 000000000..010ed01c3
--- /dev/null
+++ b/testsuite/synth/issue1945/alias02.vhdl
@@ -0,0 +1,20 @@
+library ieee;
+use ieee.STD_LOGIC_1164.all;
+
+entity alias02 is
+    port(
+        i : in  std_logic;
+        o : out std_logic_vector(7 downto 0)
+    );
+end entity;
+
+architecture rtl of alias02 is
+    alias o_alias : std_logic_vector(7 downto 2) is o(6 downto 1);
+    alias o_alias2   : std_logic_vector(3 downto 0) is o_alias(6 downto 3);
+begin
+  o (7) <= '1';
+  o (0) <= '1';
+  o_alias (7) <= '1';
+  o_alias (2) <= '1';
+  o_alias2 <= i & i & i & i;
+end architecture;