testsuite/synth: add testcase for #937

1 files changed, 20 insertions, 0 deletions

diff --git a/testsuite/synth/issue937/enot.vhdl b/testsuite/synth/issue937/enot.vhdl
new file mode 100644
index 000000000..ea583d4ed
--- /dev/null
+++ b/testsuite/synth/issue937/enot.vhdl
@@ -0,0 +1,20 @@
+entity enot is
+    port (
+        i : in bit;
+        x : in boolean;
+        o : out bit
+    );
+end entity;
+
+architecture a of enot is
+begin
+    process(i, x)
+    begin
+        if not x then
+            o <= i;
+        else
+            o <= '0';
+        end if;
+    end process;
+end;
+