gcc/testsuite/gfortran.dg/mvbits_4.f90

   1 ! { dg-do run }
   2
   3 ! PR fortran/35681
   4 ! Check that dependencies of MVBITS arguments are resolved correctly by using
   5 ! temporaries if both arguments refer to the same variable.
   6
   7   integer, dimension(10) :: ila1 = (/1,2,3,4,5,6,7,8,9,10/)
   8   integer, dimension(20) :: ila2
   9   integer, dimension(10), target :: ila3
  10   integer, pointer :: ila3_ptr(:)
  11   integer, parameter :: SHOULD_BE(10) = (/17,18,11,4,13,22,7,16,9,18/)
  12   integer, parameter :: INDEX_VECTOR(10) = (/9,9,6,2,4,9,2,9,6,10/)
  13
  14   ila2(2:20:2) = ila1
  15   ila3 = ila1
  16
  17   ! Argument is already packed.
  18   call mvbits (ila1(INDEX_VECTOR), 2, 4, ila1, 3)
  19   write (*,'(10(I3))') ila1
  20   if (any (ila1 /= SHOULD_BE)) STOP 1
  21
  22   ! Argument is not packed.
  23   call mvbits (ila2(2*INDEX_VECTOR), 2, 4, ila2(2:20:2), 3)
  24   write (*,'(10(I3))') ila2(2:20:2)
  25   if (any (ila2(2:20:2) /= SHOULD_BE)) STOP 2
  26
  27   ! Pointer and target
  28   ila3_ptr => ila3
  29   call mvbits (ila3(INDEX_VECTOR), 2, 4, ila3_ptr, 3)
  30   write (*,'(10(I3))') ila3
  31   if (any (ila3 /= SHOULD_BE)) STOP 3
  32
  33   end