NotificationsYou must be signed in to change notification settings
Fork32.4k
Star67.9k

[3.13] gh-118561: Fix crash involving list.extend in free-threaded build (GH-118723)#118863

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to ourterms of service andprivacy statement. We’ll occasionally send you account related emails.

Already on GitHub?Sign in to your account

Jump to bottom

Merged

colesbury merged 1 commit intopython:3.13frommiss-islington:backport-2402715-3.13

May 9, 2024

Merged

[3.13] gh-118561: Fix crash involving list.extend in free-threaded build (GH-118723)#118863

colesbury merged 1 commit intopython:3.13frommiss-islington:backport-2402715-3.13

May 9, 2024

Conversation

Copy link

Contributor

miss-islington commentedMay 9, 2024•
edited by bedevere-appbot
Loading

Thelist_preallocate_exact function did not zero initialize array
contents. In the free-threaded build, this could expose uninitialized
memory to concurrent readers between the call to
list_preallocate_exact and the filling of the array contents with
items.
(cherry picked from commit2402715)

Co-authored-by: Sam Grosscolesbury@gmail.com

Issue:test_free_threading.test_racing_iter_extend crash #118561

pythongh-118561: Fix crash involving list.extend in free-threaded bui…

d60c33b

…ld (pythonGH-118723)The `list_preallocate_exact` function did not zero initialize arraycontents. In the free-threaded build, this could expose uninitializedmemory to concurrent readers between the call to`list_preallocate_exact` and the filling of the array contents withitems.(cherry picked from commit2402715)Co-authored-by: Sam Gross <colesbury@gmail.com>