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diff --git a/testsuite/gna/issue1831/sipo.vhdl b/testsuite/gna/issue1831/sipo.vhdl
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+library IEEE;
+use IEEE.std_logic_1164.all;
+
+entity SIPO is
+end entity SIPO;
+
+architecture RTL of SIPO is
+ type slv_array_t is array (natural range <>) of std_logic_vector;
+ signal block_reg : slv_array_t(0 to 3)(7 downto 0);
+
+ -- the following works though
+ -- type block_t is array (0 to 3) of std_logic_vector(7 downto 0);
+ -- signal block_reg : block_t;
+begin
+ -- same if in a process
+ block_reg <= block_reg(1 to 3) & block_reg(0);
+end architecture;