3 files changed, 40 insertions, 0 deletions
diff --git a/testsuite/synth/issue1628/test.vhdl b/testsuite/synth/issue1628/test.vhdl
new file mode 100644
index 000000000..c7de976c1
--- /dev/null
+++ b/testsuite/synth/issue1628/test.vhdl
@@ -0,0 +1,17 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std_unsigned.all;
+
+entity test is
+end entity test;
+
+architecture synthesis of test is
+
+   signal a : std_logic_vector(3 downto 0);
+
+begin
+
+   a <= to_stdlogicvector(10, 4);
+
+end architecture synthesis;
+
diff --git a/testsuite/synth/issue1628/test2.vhdl b/testsuite/synth/issue1628/test2.vhdl
new file mode 100644
index 000000000..93f2d094a
--- /dev/null
+++ b/testsuite/synth/issue1628/test2.vhdl
@@ -0,0 +1,14 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std_unsigned.all;
+
+entity test2 is
+  port (
+   a : out std_logic_vector(3 downto 0));
+end entity test2;
+
+architecture synthesis of test2 is
+begin
+   a <= to_stdlogicvector(10, 4);
+end architecture synthesis;
+
diff --git a/testsuite/synth/issue1628/testsuite.sh b/testsuite/synth/issue1628/testsuite.sh
new file mode 100755
index 000000000..df2069561
--- /dev/null
+++ b/testsuite/synth/issue1628/testsuite.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+GHDL_STD_FLAGS=--std=08
+synth_only test
+synth_only test2
+
+echo "Test successful"