controldepth.c: (in function f)
controldepth.c:8:15: Maximum control nesting depth (2) exceeded
  Maximum number of control levels exceeded. (Use -controlnestdepth to inhibit
  warning)
controldepth.c:15:17: Maximum control nesting depth (2) exceeded

Finished checking --- 2 code warnings, as expected

controldepth.c: (in function f)
controldepth.c:6:15: Maximum control nesting depth (1) exceeded
  Maximum number of control levels exceeded. (Use -controlnestdepth to inhibit
  warning)
controldepth.c:11:13: Maximum control nesting depth (1) exceeded

Finished checking --- 2 code warnings, as expected