 --> [ local path prefix ]/system/invalid_component_instance.fpp:3:11
  |
3 | system S: c
  |           ^ invalid use of symbol c: not a topology symbol
  |
 ::: [ local path prefix ]/system/invalid_component_instance.fpp:2:1
  |
2 | instance c: C base id 0x100
  | --------------------------- c defined here

