testsuite/synth: add test for #1080

2 files changed, 37 insertions, 0 deletions

diff --git a/testsuite/synth/issue1080/repro.vhdl b/testsuite/synth/issue1080/repro.vhdl
new file mode 100644
index 000000000..f9073c8fd
--- /dev/null
+++ b/testsuite/synth/issue1080/repro.vhdl
@@ -0,0 +1,26 @@
+entity repro_sub is
+  generic (
+    val : natural := 10);
+  port (
+    a : natural := val;
+    b : out natural);
+end repro_sub;
+
+architecture behav of repro_sub is
+begin
+  b <= a + 1;
+end behav;
+
+entity repro is
+  port (
+    a : natural;
+    b : out natural);
+end repro;
+
+architecture rtl of repro is
+begin
+  dut: entity work.repro_sub
+    port map (b => b);
+end rtl;
+
+
diff --git a/testsuite/synth/issue1080/testsuite.sh b/testsuite/synth/issue1080/testsuite.sh
new file mode 100755
index 000000000..0e3851e6b
--- /dev/null
+++ b/testsuite/synth/issue1080/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+for t in repro; do
+    synth $t.vhdl -e $t > syn_$t.vhdl
+    analyze syn_$t.vhdl
+    clean
+done
+
+echo "Test successful"