Add bug16782.

1 files changed, 36 insertions, 0 deletions

diff --git a/testsuite/gna/bug16782/bug.vhd b/testsuite/gna/bug16782/bug.vhd
new file mode 100644
index 0000000..93d2192
--- /dev/null
+++ b/testsuite/gna/bug16782/bug.vhd
@@ -0,0 +1,36 @@
+entity bug is end entity;
+architecture arch of bug is
+    component comp is port(a :in bit_vector); end component;
+    constant DATAPATH :natural := 16;
+    signal a :bit_vector(DATAPATH-1 downto 0);
+begin
+    i_comp: comp port map(a);
+end architecture;
+
+entity comp is port(a :in bit_vector); end entity;
+architecture arch of comp is
+    constant DATAPATH :natural := a'length;
+    signal state :natural;
+    signal tmp   :bit_vector(31 downto 0);
+begin
+    process(a) begin
+        case DATAPATH is
+        when 8=>
+            case state is
+                when 0=> tmp(1*DATAPATH-1 downto 0*DATAPATH)<=a;
+                when 1=> tmp(2*DATAPATH-1 downto 1*DATAPATH)<=a;
+-- When DATAPATH>10 this range violates bounds, but this code should not be reached because "case DATAPATH is when 8=>"
+                when 2=> tmp(3*DATAPATH-1 downto 2*DATAPATH)<=a;
+                when 3=> tmp(4*DATAPATH-1 downto 3*DATAPATH)<=a;
+                when others=>
+            end case;
+        when 16=>
+            case state is
+                when 0=> tmp(1*DATAPATH-1 downto 0*DATAPATH)<=a;
+                when 1=> tmp(2*DATAPATH-1 downto 1*DATAPATH)<=a;
+                when others=>
+            end case;
+        when others=>
+        end case;
+    end process;
+end architecture;