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parameter string cannot be referenced in parameter-override expressions #1442
Description
two cases: passing it down unmodified, and passing a concatenation both fail
unmodified:
// t2_passdown.v
module child;
parameter string memName = "";
initial $display("child memName=%s", memName);
endmodule
module mid;
parameter string memName = "";
child #(.memName(memName)) c();
endmodule
module top;
mid #(.memName("foo")) m();
endmodule$ iverilog -g2009 -o /dev/null t2_passdown.v
t2_passdown.v:7: error: Unable to bind variable `memName' in `top.m'
1 error(s) during elaboration.
concat:
// t3_concat.v
module child;
parameter string memName = "";
initial $display("child memName=%s", memName);
endmodule
module top;
parameter string memName = "m";
child #(.memName({memName, "_", "0"})) c();
endmodule$ iverilog -g2009 -o /dev/null t3_concat.v
t3_concat.v:7: internal error: I don't know how to elaborate(ivl_type_t) this expression: {memName, "_", "0"}
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