Issue #22770: Prevent some Tk segfaults on OS X when running gui tests.
When running tests in subprocesses with the regrtest -j option, a bug
in Cocoa Tk can result in a Tcl segfault. Avoid the problem by forcing
Tk to fully initialize as an OS X gui process before destroying the
Tcl instance and creating another. (Original patch by Serhiy Storchaka)
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
index 26b8e44..f443459 100644
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -326,12 +326,11 @@
reason = "cannot run without OS X gui process"
# check on every platform whether tkinter can actually do anything
- # 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'):
+ if not reason:
try:
from Tkinter import Tk
root = Tk()
+ root.update()
root.destroy()
except Exception as e:
err_string = str(e)
diff --git a/Misc/NEWS b/Misc/NEWS
index 97aa75f..c60917f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -277,6 +277,8 @@
- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks
to William Orr.
+- Issue #22770: Prevent some Tk segfaults on OS X when running gui tests.
+
Build
-----