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! Test the dependency checking in simple where. This

! did not work and was fixed as part of the patch for

! pr24519.

!

program where_20

   integer :: a(4)

   integer :: b(3)

   integer :: c(3)

   integer :: d(3) = (/1, 2, 3/)

   equivalence (a(1), b(1)), (a(2), c(1))

! This classic case worked before the patch.

   a = (/1, 2, 3, 4/)

   where (b .gt. 1) a(2:4) = a(1:3)

   if (any(a .ne. (/1,2,2,3/))) call abort ()

! This is the original manifestation of the problem

! and is repeated in where_19.f90.

   a = (/1, 2, 3, 4/)

   where (b .gt. 1)

     c = b

   endwhere

   if (any(a .ne. (/1,2,2,3/))) call abort ()

! Mask to.destination dependency.

   a = (/1, 2, 3, 4/)

   where (b .gt. 1)

     c = d

   endwhere

   if (any(a .ne. (/1,2,2,3/))) call abort ()

! Source to.destination dependency.

   a = (/1, 2, 3, 4/)

   where (d .gt. 1)

     c = b

   endwhere

   if (any(a .ne. (/1,2,2,3/))) call abort ()

! Check the simple where.

   a = (/1, 2, 3, 4/)

   where (b .gt. 1) c = b

   if (any(a .ne. (/1,2,2,3/))) call abort ()

! This was OK before the patch.

   a = (/1, 2, 3, 4/)

   where (b .gt. 1)

     where (d .gt. 1)

       c = b

     end where

   endwhere

   if (any(a .ne. (/1,2,2,3/))) call abort ()

end program