Index: packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py =================================================================== --- packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py +++ packages/Python/lldbsuite/test/functionalities/postmortem/minidump-new/TestMiniDumpNew.py @@ -108,15 +108,16 @@ /proc/PID/status which is written in the file """ shutil.copyfile(core, newcore) - with open(newcore, "r+") as f: + with open(newcore, "rb+") as f: f.seek(offset) - self.assertEqual(f.read(5), oldpid) + currentpid = f.read(5).decode('utf-8') + self.assertEqual(currentpid, oldpid) f.seek(offset) if len(newpid) < len(oldpid): newpid += " " * (len(oldpid) - len(newpid)) newpid += "\n" - f.write(newpid) + f.write(newpid.encode('utf-8')) def test_deeper_stack_in_minidump_with_same_pid_running(self): """Test that we read the information from the core correctly even if we