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entity impure_ex2 is
port (
clk : in bit;
arg : in bit;
res : out bit
);
end impure_ex2;
architecture rtl of impure_ex2 is
-- An impure function called from a combinatorial process with "all"
-- sensitivity triggers an exception.
impure function foo return bit is
begin
return arg;
end function foo;
signal ns : bit;
begin
--comb_process : process(res) -- this works
comb_process : process(all)
begin
ns <= res XOR foo;
end process;
end rtl;
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