gcc/testsuite/g77.f-torture/execute/io0.f

   1 *     Preliminary tests for a few things in the i/o library.
   2 *     Thrown together by Dave Love not from specific bug reports --
   3 *     other ideas welcome.
   4
   5       character *(*) fmt
   6       parameter (fmt='(1x,i3,f5.1)')
   7 *     Scratch file makes sure we can use one and avoids dealing with
   8 *     explicit i/o in the testsuite.
   9       open(90, status='scratch') ! try a biggish unit number
  10       write(90, '()')           ! extra record for interest
  11 *     Formatted i/o can go wild (endless loop AFAIR) if we're wrongly
  12 *     assuming an ANSI sprintf.
  13       write(90, fmt) 123, 123.0
  14       backspace 90              ! backspace problems reported on DOSish systems
  15       read(90, fmt) i, r
  16       endfile 90
  17       if (i/=123 .or. nint(r)/=123) call abort
  18       rewind 90                 ! make sure we can rewind too
  19       read(90, '()')
  20       read(90, fmt) i, r
  21       if (i/=123 .or. nint(r)/=123) call abort
  22       close(90)
  23 *     Make sure we can do unformatted i/o OK.  This might be
  24 *     problematic on DOS-like systems if we've done an fopen in text
  25 *     mode, not binary.
  26       open(90, status='scratch', access='direct', form='unformatted',
  27      +     recl=8)
  28       write(90, rec=1) 123, 123.0
  29       read(90, rec=1) i, r
  30       if (i/=123 .or. nint(r)/=123) call abort
  31       close(90)
  32       open(90, status='scratch', form='unformatted')
  33       write(90) 123, 123.0
  34       backspace 90
  35       read(90) i, r
  36       if (i/=123 .or. nint(r)/=123) call abort
  37       close(90)
  38 *     Fails at 1998-09-01 on spurious recursive i/o check (fixed by
  39 *     1998-09-06 libI77 change):
  40       open(90, status='scratch', form='formatted', recl=16,
  41      +     access='direct')
  42       write(90, '(i8,f8.1)',rec=1) 123, 123.0
  43       read(90, '(i8,f8.1)', rec=1) i, r
  44       if (i/=123 .or. nint(r)/=123) call abort
  45       close(90)
  46       end