testsuite/synth: add test for #1534

2 files changed, 22 insertions, 0 deletions

diff --git a/testsuite/synth/issue1534/ent.vhdl b/testsuite/synth/issue1534/ent.vhdl
new file mode 100644
index 000000000..ee5a53c15
--- /dev/null
+++ b/testsuite/synth/issue1534/ent.vhdl
@@ -0,0 +1,13 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity ent is
+    port (
+        o: out std_ulogic
+    );
+end entity;
+
+architecture arch of ent is
+begin
+    o <= to_stdulogic('0');
+end architecture;
diff --git a/testsuite/synth/issue1534/testsuite.sh b/testsuite/synth/issue1534/testsuite.sh
new file mode 100755
index 000000000..5742decf4
--- /dev/null
+++ b/testsuite/synth/issue1534/testsuite.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+synth_analyze ent
+
+clean
+
+echo "Test successful"