aggregate as target does not flag when the same elements are assigned

[luscheller]

The following form of aggregate

(b, b) <= a

is illegal but not flagged by the language server. This should be pretty easy to detect.

Minimal reproducible example:

entity test is
end entity test;

architecture rtl of test is
    signal a: bit_vector(1 downto 0);
    signal b: bit;
begin
    (b, b) <= a;
end architecture;

LRM 10.5.2.1:

It is an error if a given signal or any subelement [of the assignment statement] is identified as a target by more than one element association in [...] an aggregate