From c27d05a9677afdf04f0b513e14cf0d2a7ec3e4bb Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Sun, 28 Jun 2026 13:06:42 +0300
Subject: [PATCH 1/2] gh-151126: Fix a possible crash during the startup with
 no memory under `Py_STACKREF_DEBUG`

---
 .../Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst  | 2 ++
 Python/pystate.c                                            | 6 ++++++
 2 files changed, 8 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst

diff --git a/Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst b/Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst
new file mode 100644
index 000000000000000..4ee4f96cda5d9be
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst
@@ -0,0 +1,2 @@
+Fix a possible crash during the interpreter startup under a memory pressure
+with ``Py_STACKREF_DEBUG`` enabled.
diff --git a/Python/pystate.c b/Python/pystate.c
index 29f13e92e0dd1fd..e90642fa882db72 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -656,6 +656,9 @@ init_interpreter(PyInterpreterState *interp,
         NULL,
         &alloc
     );
+    if (interp->open_stackrefs_table == NULL) {
+        return _PyStatus_NO_MEMORY();
+    }
 #  ifdef Py_STACKREF_CLOSE_DEBUG
     interp->closed_stackrefs_table = _Py_hashtable_new_full(
         _Py_hashtable_hash_ptr,
@@ -664,6 +667,9 @@ init_interpreter(PyInterpreterState *interp,
         NULL,
         &alloc
     );
+    if (interp->closed_stackrefs_table == NULL) {
+        return _PyStatus_NO_MEMORY();
+    }
 #  endif
     _Py_stackref_associate(interp, Py_None, PyStackRef_None);
     _Py_stackref_associate(interp, Py_False, PyStackRef_False);

From 1e8edf9b31b248cd83dac62c19699b5efad0a8b9 Mon Sep 17 00:00:00 2001
From: sobolevn <mail@sobolevn.me>
Date: Mon, 29 Jun 2026 01:44:16 +0300
Subject: [PATCH 2/2] Delete
 Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst

---
 .../next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst | 2 --
 1 file changed, 2 deletions(-)
 delete mode 100644 Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst

diff --git a/Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst b/Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst
deleted file mode 100644
index 4ee4f96cda5d9be..000000000000000
--- a/Misc/NEWS.d/next/Library/2026-06-28-13-05-52.gh-issue-151126.KE2OvV.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix a possible crash during the interpreter startup under a memory pressure
-with ``Py_STACKREF_DEBUG`` enabled.