gcc/testsuite/gfortran.dg/implied_do_io_3.f90

   1 ! { dg-do run }
   2 ! { dg-options "-ffrontend-optimize" }
   3 ! PR 80988 - implied do loops with diagonal elements
   4 ! were not written correctly
   5 program main
   6   implicit none
   7   integer :: i,j,k
   8   integer, dimension(3,3) :: a
   9   integer, dimension(3,3,3) :: b
  10   character(len=40) :: line
  11   a = reshape([(((i*10+j),i=1,3),j=1,3)], shape(a))
  12   i = 2147483548
  13   write (unit=line,fmt='(10I3)') (a(i,i),i=1,3)
  14   if (line /= ' 11 22 33') STOP 1
  15   write (unit=line,fmt='(10I3)') (a(i+1,i+1),i=1,2)
  16   if (line /= ' 22 33') STOP 2
  17   do k=1,3
  18      do j=1,3
  19         do i=1,3
  20            b(i,j,k) = i*100 + j*10 + k
  21         end do
  22      end do
  23   end do
  24   i = -2147483548
  25   write (unit=line,fmt='(10I4)') ((b(i,j,i),i=1,3),j=1,3)
  26   if (line /= ' 111 212 313 121 222 323 131 232 333') STOP 3
  27 end program main