[sv-ec] covergroup object and garbage colector isssue

LRM do not precise if covergroups which became unreachable becasue all the
references to them where lost should be cleared by GC or they should be
preserved and raported in functional cover report before EOS. This should be
defined somehow on ieee left it tool dependend? See example:
 
module m;
   bit a;
    covergroup cg;
        coverpoint a;
        option.per_instance = 1;
    endgroup
 
        cg g ;
 
initial begin
        g = new();
        g.sample;
        a=1;
        g = new();  // overwriting - do we have to or one instance in
functional cover raport
        g.sample;
end

 
endmodule
 
DANiel

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