vvp: array.cc:1561: void compile_array_alias(char*, char*, char*): Assertion `mem' failed.

[grebe]

The following:

module __sample__main(
  input wire [48:0] x1,
  output wire [48:0] out
);
  wire [48:0] x17[0:0];
  assign x17[0] = x1;
  assign out = {x17[0]};
endmodule

triggers the following vvp error for me at ef7f0a8:

vvp: array.cc:1561: void compile_array_alias(char*, char*, char*): Assertion `mem' failed.