Lldb x/s output "\xfffffff8\xffffffd5" like values

lldb often times prints out gibberish like characters/hex values, how do I convert this to string? Some values when I do “po”, they return a string or method name with address, some are not “poable”, anyone has any ideas?

Here is an example output:

“\x1c\xfffffff8\xffffffdf\x01 \xfffffff8\xffffffdf\x01$\xfffffff8\xffffffdf\x01(\xfffffff8\xffffffdf\x01t\xfffffff8\xffffffdf\x010\xfffffff8\xffffffdf\x014\xfffffff8\xffffffdf\x01\x101\xffffffcf\x01\x141\xffffffcf\x01$1\xffffffcf\x01@1\xffffffcf\x01T1\xffffffcf\x01P1\xffffffcf\x01D1\xffffffcf\x01h1\xffffffcf\x01\xffffff9c1\xffffffcf\x01\xffffffa01\xffffffcf\x01\xffffffa41\xffffffcf\x01\xffffffa81\xffffffcf\x01\xffffffc41\xffffffcf\x01\xffffffc81\xffffffcf\x01\xffffffcc1\xffffffcf\x01\xffffffd41\xffffffcf\x01\xffffffd81\xffffffcf\x01\xffffffdc1\xffffffcf\x01\xfffffff0\x03\xffffffd5\x01\xffffffec\x03\xffffffd5\x01UKW”

“lyP\x03\xffffff9dXU”

thanks