1! { dg-do run }
2! PR 30321:  This used to segfault.
3program xzero
4  implicit none
5  integer :: ii(1,0)
6  logical :: ll(1,0)
7  character (len=80) line
8  ll = .true.
9  write (unit=line, fmt="(I6)") sum(ii,dim=1)
10  if (line /= " ") STOP 1
11  write (unit=line, fmt="(I6)") sum(ii,dim=1,mask=ll)
12  if (line /= " ") STOP 2
13end program xzero
14