[Python-checkins] bpo-46263: FreeBSD 14.0 jemalloc workaround for junk bytes of freed memory (GH-30434)
miss-islington
webhook-mailer at python.org
Thu Jan 6 10:37:06 EST 2022
https://github.com/python/cpython/commit/b951dec4418326c06d493020dadedf85a3b29a82
commit: b951dec4418326c06d493020dadedf85a3b29a82
branch: 3.10
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: miss-islington <31488909+miss-islington at users.noreply.github.com>
date: 2022-01-06T07:36:47-08:00
summary:
bpo-46263: FreeBSD 14.0 jemalloc workaround for junk bytes of freed memory (GH-30434)
Automerge-Triggered-By: GH:tiran
(cherry picked from commit a4aa52dc2801d25b6343fe2ef8de7f40ea3bc883)
Co-authored-by: Christian Heimes <christian at python.org>
files:
A Misc/NEWS.d/next/Tests/2022-01-06-15-45-34.bpo-46263.bJXek6.rst
M Lib/test/test_capi.py
diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
index b5cb3ad0bc07a..6453f760a846e 100644
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -850,8 +850,13 @@ class PyMemDebugTests(unittest.TestCase):
def check(self, code):
with support.SuppressCrashReport():
- out = assert_python_failure('-c', code,
- PYTHONMALLOC=self.PYTHONMALLOC)
+ out = assert_python_failure(
+ '-c', code,
+ PYTHONMALLOC=self.PYTHONMALLOC,
+ # FreeBSD: instruct jemalloc to not fill freed() memory
+ # with junk byte 0x5a, see JEMALLOC(3)
+ MALLOC_CONF="junk:false",
+ )
stderr = out.err
return stderr.decode('ascii', 'replace')
diff --git a/Misc/NEWS.d/next/Tests/2022-01-06-15-45-34.bpo-46263.bJXek6.rst b/Misc/NEWS.d/next/Tests/2022-01-06-15-45-34.bpo-46263.bJXek6.rst
new file mode 100644
index 0000000000000..0334af4e3cbe8
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2022-01-06-15-45-34.bpo-46263.bJXek6.rst
@@ -0,0 +1,2 @@
+Fix test_capi on FreeBSD 14-dev: instruct jemalloc to not fill freed memory
+with junk byte.
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