gcc/testsuite/gfortran.dg/streamio_4.f90

   1 ! { dg-do run }
   2 ! PR25828 Stream IO test 4, Tests string read and writes, single byte.
   3 ! Verifies buffering is working correctly and position="append"
   4 ! Contributed by Jerry DeLisle <jvdelisle@verizon.net>.
   5 program streamtest
   6   implicit none
   7   character(1)   :: lf = char(10)
   8   character(1)   :: tchar
   9   integer        :: i,j,k
  10   integer, parameter :: lines = 5231
  11
  12   open(10, file="teststream", access="stream", form="formatted")
  13
  14   do i=1,lines
  15     do j=0,9
  16       write(10,"(i5)") j
  17     end do
  18   end do
  19
  20   close(10)
  21
  22   open(10, file="teststream", access="stream",&
  23   &form="formatted", position="append")
  24   do i=1,lines
  25     do j=0,9
  26       write(10,"(i5)") j
  27     end do
  28   end do
  29   rewind(10)
  30   do i=1,lines
  31     do j=0,9
  32       read(10,"(i5)") k
  33       if (k.ne.j) call abort()
  34     end do
  35   end do
  36
  37   close(10,status="delete")
  38 end program streamtest