testsuite/synth: add a test for #1107

2 files changed, 26 insertions, 0 deletions

diff --git a/testsuite/synth/issue1107/testsuite.sh b/testsuite/synth/issue1107/testsuite.sh
new file mode 100755
index 000000000..94bce8c29
--- /dev/null
+++ b/testsuite/synth/issue1107/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+for t in unconnected; do
+    synth $t.vhdl -e $t > syn_$t.vhdl
+    analyze syn_$t.vhdl
+    clean
+done
+
+echo "Test successful"
diff --git a/testsuite/synth/issue1107/unconnected.vhdl b/testsuite/synth/issue1107/unconnected.vhdl
new file mode 100644
index 000000000..0c7886a24
--- /dev/null
+++ b/testsuite/synth/issue1107/unconnected.vhdl
@@ -0,0 +1,15 @@
+library ieee;
+
+use ieee.std_logic_1164.all;
+
+entity unconnected is
+  port (
+    output: out std_logic
+    );
+end entity;
+
+architecture arch of unconnected is
+  signal no_value: std_logic;
+begin
+  output <= no_value;
+end;