commit 71ac07f8baf21bf7a116e97accc12804f1afcdd4
author Ned Deily <nad@acm.org> Sat May 03 19:25:34 2014 -0700
committer Ned Deily <nad@acm.org> Sat May 03 19:25:34 2014 -0700
tree 7a0afbd8ade9f710fdcddea8c0ba43fe434a1a85
parent 3170d1cccb15d7ad94658944e3aba1a1e753adbf
parent 88b5b6ddf60c38f54d0c656d883b0aed6cb03987

Issue #18604: merge from 3.4

Lib/test/support/__init__.py

diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index d26281a..40aab96 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -434,7 +434,9 @@
                 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()