1! pr 15755
2        implicit none
3        character*1 C
4        open(10)
5        write(10,*)'a'
6        write(10,*)'b'
7        write(10,*)'c'
8        rewind(10)
9        read(10,*)C
10        backspace(10)
11        read(10,*) C
12        if (C.ne.'a') call abort
13        close(10,STATUS='DELETE')
14        end
15