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! { dg-do compile }
! 
! PR/fortran 38432
! DO-loop compile-time checks
!
implicit none
integer :: i
real :: r
do i = 1, 0 ! { dg-warning "executed zero times" }
end do

do i = 1, -1, 1 ! { dg-warning "executed zero times" }
end do

do i = 1, 2, -1 ! { dg-warning "executed zero times" }
end do

do i = 1, 2, 0 ! { dg-error "cannot be zero" }
end do

do r = 1, 0 ! { dg-warning "must be integer|executed zero times" }
end do

do r = 1, -1, 1 ! { dg-warning "must be integer|executed zero times" }
end do

do r = 1, 2, -1 ! { dg-warning "must be integer|executed zero times" }
end do

do r = 1, 2, 0
end do
! { dg-warning "must be integer" "loop var" { target *-*-* } 30 }
! { dg-error "cannot be zero" "loop step" { target *-*-* } 30 }
end