Clang and Python warnings during installation of Python SDK 2.3.2

src/callbacks.c: In function ‘ping_callback’:

src/callbacks.c:736:9: warning: variable ‘do_return’ set but not used [-Wunused-but-set-variable]

     int do_return = 0;

         ^

src/oputil.c: In function ‘pycbc_sd_handle_speclist’:

src/oputil.c:657:8: warning: ‘rv’ may be used uninitialized in this function [-Wmaybe-uninitialized]

     if (rv == 0) {

        ^

src/ixmgmt.c: In function ‘mgmt_callback’:

src/ixmgmt.c:15:26: warning: variable ‘hdrs’ set but not used [-Wunused-but-set-variable]

     const char * const * hdrs = NULL;

                          ^

  File "build/bdist.linux-x86_64/egg/acouchbase/iterator.py", line 17

    yield from self._future

             ^

SyntaxError: invalid syntax