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! Check whether an empty WHERE works program where_15 integer :: a(5) integer :: b(5) a = (/1, 2, 3, 4, 5/) b = (/0, 0, 0, 0, 0/) where (a .eq. 1) elsewhere b = 2 endwhere if (any (b .ne. (/0, 2, 2, 2, 2/))) & call abort end program