gcc/testsuite/gfortran.dg/read_dir.f90

   1 ! { dg-do run }
   2 ! { dg-additional-sources read_dir-aux.c }
   3 !
   4 ! PR67367
   5
   6 program bug
   7    use iso_c_binding
   8    implicit none
   9
  10    interface
  11      integer(c_int) function expect_open_to_fail () bind(C)
  12        import
  13      end
  14      subroutine my_verify_not_exists(s) bind(C)
  15        ! Aborts if the passed pathname (still) exists
  16        import
  17        character(len=1,kind=c_char) :: s(*)
  18      end subroutine
  19      subroutine my_mkdir(s) bind(C)
  20        ! Call POSIX's mkdir - and ignore fails due to
  21        ! existing directories but fail otherwise
  22        import
  23        character(len=1,kind=c_char) :: s(*)
  24      end subroutine
  25      subroutine my_rmdir(s) bind(C)
  26        ! Call POSIX's rmdir - and ignore fails
  27        import
  28        character(len=1,kind=c_char) :: s(*)
  29      end subroutine
  30    end interface
  31
  32    character(len=*), parameter :: sdir = "junko.dir"
  33    character(len=*,kind=c_char), parameter :: c_sdir = sdir // c_null_char
  34
  35    character(len=1) :: c
  36    integer ios
  37
  38    if (expect_open_to_fail () /= 0) then
  39       ! Windows is documented to fail with EACCESS when trying to open a
  40       ! directory. However, target macros such as __WIN32__ are not defined
  41       ! in Fortran; hence, we use a detour via this C function.
  42       ! Check for '.' which is a known-to-exist directory:
  43       open(unit=10, file='.',iostat=ios,action='read',access='stream')
  44       if (ios == 0) &
  45           stop 3  ! Error: open to fail (EACCESS)
  46        stop 0  ! OK
  47    endif
  48
  49    call my_mkdir(c_sdir)
  50    open(unit=10, file=sdir,iostat=ios,action='read',access='stream')
  51
  52    if (ios.ne.0) then
  53       call my_rmdir(c_sdir)
  54       STOP 1
  55    end if
  56    read(10, iostat=ios) c
  57    if (ios.ne.21.and.ios.ne.0) then  ! EISDIR has often the value 21
  58       close(10, status='delete')
  59       call my_verify_not_exists(c_sdir)
  60       STOP 2
  61    end if
  62    close(10, status='delete')
  63    call my_verify_not_exists(c_sdir)
  64 end program bug