1 files changed, 31 insertions, 0 deletions
diff --git a/testsuite/synth/issue2240/case_concat.vhdl b/testsuite/synth/issue2240/case_concat.vhdl
new file mode 100644
index 000000000..3c7351df5
--- /dev/null
+++ b/testsuite/synth/issue2240/case_concat.vhdl
@@ -0,0 +1,31 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity case_concat is
+end entity;
+
+architecture behaviour of case_concat is
+
+  subtype sel_t is std_logic_vector(1 downto 0);
+  constant S0 : sel_t := '0' & '0';
+  constant S1 : sel_t := '0' & '1';
+  constant S2 : sel_t := '1' & '1';
+  constant S3 : sel_t := '1' & '0';
+  
+  signal sel : sel_t;
+  
+begin
+
+  process (sel)
+  begin
+    case sel is
+      when S0 => null;
+      when S1 => null;
+      when S2 => null;
+      when S3 => null;
+      when others => null; 
+    end case;
+  end process;
+  
+end architecture;
+