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entity econcat1 is
end econcat1;
architecture behav of econcat1 is
constant c1 : string (1 to 5) := "hello";
constant c2 : string (6 downto 1) := " world";
constant r : string := c1 & c2;
begin
process
begin
case True is
when c1 & c2 = "hello world" => null;
when false => null;
end case;
assert r'left = 1 severity failure;
assert r'right = 11 severity failure;
wait;
end process;
end;
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