warning: Start expression in DO loop must be integer
 --> tests/warnings/doloop_01.f90:4:12
  |
4 |     do i = 1.5, 10.5, 2.4
  |            ^^^ 

warning: End expression in DO loop must be integer
 --> tests/warnings/doloop_01.f90:4:17
  |
4 |     do i = 1.5, 10.5, 2.4
  |                 ^^^^ 

warning: Step expression (increment) in DO loop must be integer
 --> tests/warnings/doloop_01.f90:4:23
  |
4 |     do i = 1.5, 10.5, 2.4
  |                       ^^^ 
