The attached patch should fix PR 17017.

ChangeLog

2014-06-04  Siva Chandra Reddy  <sivachandra@google.com>

       testsuite/

        PR gdb/17017
        * gdb.python/py-xmethods.exp (gdb_test_if_inferiorio): New function.
        Update few gdb_test invocations to gdb_test_if_inferiorio.