3 files changed, 70 insertions, 0 deletions
diff --git a/testsuite/gna/issue1765/ent.vhdl b/testsuite/gna/issue1765/ent.vhdl
new file mode 100644
index 000000000..c2f21f62e
--- /dev/null
+++ b/testsuite/gna/issue1765/ent.vhdl
@@ -0,0 +1,28 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+--use work.TestPkg.all ;
+
+entity test is
+  port(
+    input  : in  unsigned ;
+    output : out unsigned 
+  );
+end entity;
+
+architecture rtl of test is
+alias A is Output ; -- does not work
+--  alias A : unsigned(output'range) is Output ;  -- Works
+--  alias A : output'subtype is Output ;  -- Works
+
+begin
+  A <= (output'range => '0') ;
+  
+  process 
+  begin 
+    wait on input ;  -- Suppress first run
+    report "input = " & to_hstring(input) ; 
+  end process ; 
+  
+end architecture ;
diff --git a/testsuite/gna/issue1765/ent93.vhdl b/testsuite/gna/issue1765/ent93.vhdl
new file mode 100644
index 000000000..3ac359299
--- /dev/null
+++ b/testsuite/gna/issue1765/ent93.vhdl
@@ -0,0 +1,28 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+--use work.TestPkg.all ;
+
+entity test is
+  port(
+    input  : in  unsigned ;
+    output : out unsigned 
+  );
+end entity;
+
+architecture rtl of test is
+alias A is Output ; -- does not work
+--  alias A : unsigned(output'range) is Output ;  -- Works
+--  alias A : output'subtype is Output ;  -- Works
+
+begin
+  A <= (output'range => '0') ;
+  
+  process 
+  begin 
+    wait on input ;  -- Suppress first run
+--    report "input = " & to_hstring(input) ; 
+  end process ; 
+  
+end architecture ;
diff --git a/testsuite/gna/issue1765/testsuite.sh b/testsuite/gna/issue1765/testsuite.sh
new file mode 100755
index 000000000..644614735
--- /dev/null
+++ b/testsuite/gna/issue1765/testsuite.sh
@@ -0,0 +1,14 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+analyze ent93.vhdl
+
+clean
+
+export GHDL_STD_FLAGS=--std=08
+analyze ent.vhdl
+
+clean
+
+echo "Test successful"