yosys/tests/verilog/global_parameter.ys at de28ab00c3531ff276cd9d7d2db855fdb332ae12 - mirrors/yosys - Libre-Chip.org

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Zachary Snow cb9f3b6abf verilog: disallow overriding global parameters

It was previously possible to override global parameters on a
per-instance basis. This could be dangerous when using positional
parameter bindings, hiding oversupplied parameters.

2021-03-11 12:36:51 -05:00

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 read_verilog -sv <<EOF
 parameter P = 1;
 module example(
     output integer out
 );
     assign out = P;
 endmodule
 module top(
     output integer out
 );
     example #(2) e1(out);
 endmodule
 EOF
 logger -expect error "Can't find object for defparam" 1
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