gcc/testsuite/gfortran.fortran-torture/execute/dep_fails.f90

   1 ! This gives incorrect results when compiled with
   2 ! the intel and pgf90 compilers
   3 Program Strange
   4
   5  Implicit None
   6
   7  Type Link
   8  Integer, Dimension(2) :: Next
   9  End Type Link
  10
  11  Integer, Parameter :: N = 2
  12  Integer, dimension (2, 4) :: results
  13  Integer :: i, j
  14
  15  Type(Link), Dimension(:,:), Pointer :: Perm
  16  Integer, Dimension(2) :: Current
  17
  18  Allocate (Perm(N,N))
  19
  20 ! Print*, 'Spanned by indices'
  21  Do i = 1, N**2
  22     Perm(mod(i-1,N)+1, (i-1)/N+1)%Next = (/ Mod(i,N) + 1, Mod(i/N+1,N)+1/)
  23 !    Write(*,100) mod(i-1,N)+1, (i-1)/N+1, Perm(mod(i-1,N)+1, (i-1)/N+1)%Next
  24 ! Expected output:
  25 !  Spanned by indices
  26 !  1 1---> 2 2
  27 !  2 1---> 1 1
  28 !  1 2---> 2 1
  29 !  2 2---> 1 2
  30  End Do
  31
  32 ! Print*, 'Spanned as a cycle'
  33  Current = (/1,1/)
  34  Do i = 1, n**2
  35    results (:, i) = Perm(Current(1), Current(2))%Next
  36 !    Write(*,100) Current, Perm(Current(1), Current(2))%Next
  37 ! Expected output:
  38 !  1 1---> 2 2
  39 !  2 2---> 1 2
  40 !  1 2---> 2 1
  41 !  2 1---> 1 1
  42    Current = Perm(Current(1), Current(2))%Next
  43  End Do
  44
  45  if (any(results .ne. reshape ((/2,2,1,2,2,1,1,1/), (/2, 4/)))) call abort
  46
  47 ! 100 Format( 2I3, '--->', 2I3)
  48  DeAllocate (Perm)
  49
  50 End Program Strange