1 files changed, 17 insertions, 0 deletions
diff --git a/testsuite/gna/issue818/tc1.vhdl b/testsuite/gna/issue818/tc1.vhdl
new file mode 100644
index 000000000..ff2cc0775
--- /dev/null
+++ b/testsuite/gna/issue818/tc1.vhdl
@@ -0,0 +1,17 @@
+entity tc1 is
+end;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tc1 is
+  signal clk : std_logic;
+  signal tg : std_logic;
+begin
+  process (clk) is
+  begin
+    if ?? tg then
+      null;
+    end if;
+  end process;
+end behav;