1 files changed, 2 insertions, 0 deletions
diff --git a/lldb/packages/Python/lldbsuite/test/test_runner/lib/process_control.py b/lldb/packages/Python/lldbsuite/test/test_runner/lib/process_control.py
index 50bcdab33c5..4e8f554e37f 100644
--- a/lldb/packages/Python/lldbsuite/test/test_runner/lib/process_control.py
+++ b/lldb/packages/Python/lldbsuite/test/test_runner/lib/process_control.py
@@ -271,6 +271,7 @@ class UnixProcessHelper(ProcessHelper):
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
+            universal_newlines=True, # Elicits automatic byte -> string decoding in Py3
             close_fds=True,
             preexec_fn=preexec_func)
 
@@ -383,6 +384,7 @@ class WindowsProcessHelper(ProcessHelper):
             stdin=subprocess.PIPE,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
+            universal_newlines=True, # Elicits automatic byte -> string decoding in Py3
             creationflags=creation_flags)
 
     def was_hard_terminate(self, returncode):