Index: utils/lit/lit/TestRunner.py
===================================================================
--- utils/lit/lit/TestRunner.py
+++ utils/lit/lit/TestRunner.py
@@ -2,6 +2,7 @@
 import difflib
 import errno
 import functools
+import io
 import itertools
 import getopt
 import os, signal, subprocess, sys
@@ -387,7 +388,7 @@
     def compareTwoFiles(filepaths):
         filelines = []
         for file in filepaths:
-            with open(file, 'r') as f:
+            with open(file, 'r', encoding="Latin-1") as f:
                 filelines.append(f.readlines())
 
         exitCode = 0