testsuite/synth: add testcase for #956

1 files changed, 21 insertions, 0 deletions

diff --git a/testsuite/synth/issue956/ent.vhdl b/testsuite/synth/issue956/ent.vhdl
new file mode 100644
index 000000000..eadfa2443
--- /dev/null
+++ b/testsuite/synth/issue956/ent.vhdl
@@ -0,0 +1,21 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity ent is
+    port (
+        i : in bit;
+        o : out bit
+    );
+end;
+
+architecture a of ent is
+    signal test : std_logic_vector(0 to 7);
+begin
+    process(i)
+    begin
+        for x in test'low to test'high loop
+        end loop;
+
+        o <= i;
+    end process;
+end;