Issue #18604: Skip the Tk instantiation test on OS X because it can
cause GUI tests to segfault in Cocoa Tk when run under regrtest -j
(multiple threads running subprocesses).
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
index 31b3119..b814952 100644
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -326,7 +326,9 @@
reason = "cannot run without OS X gui process"
# check on every platform whether tkinter can actually do anything
- if not reason:
+ # but skip the test on OS X because it can cause segfaults in Cocoa Tk
+ # when running regrtest with the -j option (multiple threads/subprocesses)
+ if (not reason) and (sys.platform != 'darwin'):
try:
from Tkinter import Tk
root = Tk()