gcc/testsuite/gfortran.dg/unf_read_corrupted_1.f90

   1 ! { dg-do run }
   2 ! Test the error message when an unformatted file has become
   3 ! corrupted.
   4 program main
   5   implicit none
   6   integer(kind=4) :: i1, i2
   7   integer :: ios
   8   character(len=50) :: msg
   9
  10   ! Write out a truncated unformatted sequential file by
  11   ! using unformatted stream.
  12
  13   open (10, form="unformatted", access="stream", file="foo.dat", &
  14   status="unknown")
  15   write (10) 16_4, 1_4
  16   close (10, status="keep")
  17
  18   ! Try to read
  19   open (10, file="foo.dat", form="unformatted", access="sequential")
  20   i1 = 0
  21   i2 = 0
  22   read (10, iostat=ios, iomsg=msg) i1, i2
  23   if (ios == 0) call abort
  24   if (i1 /= 1) call abort
  25   if (msg /= "Unformatted file structure has been corrupted") call abort
  26   close (10, status="delete")
  27 end program main