Function compare_bufers in pread01.c does not expect any arguments, but 
the reference to compare_bufers passes two arguments:

     compare_bufers(write_buf, read_buf);


Within the function compare_bufers, write_buf and read_buf are accessed 
via their global definitions.  These variables are also accessed via the 
global definitions in other functions in this testcase.

Attached is a patch to remove the unnecessary arguments from the 
compare_bufers function reference.


Signed-off-by: d.marlin <dmarlin@redhat.com>