From a5cf28603ee6283a84971173ea81e1ede5da6050 Mon Sep 17 00:00:00 2001
From: isatyamks <isatyamks@gmail.com>
Date: Sat, 15 Feb 2025 23:56:54 +0530
Subject: [PATCH 1/4] Enhance GrammarVisitor to differentiate visit methods for
 single and multi-character node classes

---
 Tools/peg_generator/pegen/grammar.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Tools/peg_generator/pegen/grammar.py b/Tools/peg_generator/pegen/grammar.py
index 1ee9d100b61f49..ad5f22bb8680dc 100644
--- a/Tools/peg_generator/pegen/grammar.py
+++ b/Tools/peg_generator/pegen/grammar.py
@@ -20,6 +20,10 @@ class GrammarVisitor:
     def visit(self, node: Any, *args: Any, **kwargs: Any) -> Any:
         """Visit a node."""
         method = "visit_" + node.__class__.__name__
+        if len(node.__class__.__name__) == 1:
+            method = "visit_single_" + node.__class__.__name__
+        elif len(node.__class__.__name__) > 1:
+            method = "visit_multi_" + node.__class__.__name__
         visitor = getattr(self, method, self.generic_visit)
         return visitor(node, *args, **kwargs)
 

From b67b1aa87506a8317fff4b569264d80712434ece Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Sun, 16 Feb 2025 06:20:23 +0000
Subject: [PATCH 2/4] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Build/2025-02-16-06-20-22.gh-issue-130077.DkWL_j.rst  | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Build/2025-02-16-06-20-22.gh-issue-130077.DkWL_j.rst

diff --git a/Misc/NEWS.d/next/Build/2025-02-16-06-20-22.gh-issue-130077.DkWL_j.rst b/Misc/NEWS.d/next/Build/2025-02-16-06-20-22.gh-issue-130077.DkWL_j.rst
new file mode 100644
index 00000000000000..8b2c19688cef6d
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-02-16-06-20-22.gh-issue-130077.DkWL_j.rst
@@ -0,0 +1,3 @@
+Fix potential memory leak in c-field representation of Python objects
+
+Resolved a memory leak issue in the `_PyObject_CAST` macro by ensuring proper casting and handling of c-fields. This fix improves memory management and prevents unintended behavior in CPython's internal object representation.

From af90e6d02653481e62684e8d4cde53abe67dbb19 Mon Sep 17 00:00:00 2001
From: Satyam Kumar <isatyamks@gmail.com>
Date: Sun, 16 Feb 2025 11:52:15 +0530
Subject: [PATCH 3/4] Update Tools/peg_generator/pegen/grammar.py

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
---
 Tools/peg_generator/pegen/grammar.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Tools/peg_generator/pegen/grammar.py b/Tools/peg_generator/pegen/grammar.py
index ad5f22bb8680dc..845c16ac95dd9f 100644
--- a/Tools/peg_generator/pegen/grammar.py
+++ b/Tools/peg_generator/pegen/grammar.py
@@ -19,11 +19,12 @@ class GrammarError(Exception):
 class GrammarVisitor:
     def visit(self, node: Any, *args: Any, **kwargs: Any) -> Any:
         """Visit a node."""
-        method = "visit_" + node.__class__.__name__
+        node_cls = node.__class__.__name__
+        method = f"visit_{node_cls}"
         if len(node.__class__.__name__) == 1:
-            method = "visit_single_" + node.__class__.__name__
+            method = f"visit_single_{node_cls}"
         elif len(node.__class__.__name__) > 1:
-            method = "visit_multi_" + node.__class__.__name__
+            method = f"visit_multi_{node_cls}"
         visitor = getattr(self, method, self.generic_visit)
         return visitor(node, *args, **kwargs)
 

From a359908fcfa18b921ca9b1e80ffc9039949059e6 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Sun, 16 Feb 2025 06:45:43 +0000
Subject: [PATCH 4/4] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Build/2025-02-16-06-45-42.gh-issue-130077.DkWL_j.rst  | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Build/2025-02-16-06-45-42.gh-issue-130077.DkWL_j.rst

diff --git a/Misc/NEWS.d/next/Build/2025-02-16-06-45-42.gh-issue-130077.DkWL_j.rst b/Misc/NEWS.d/next/Build/2025-02-16-06-45-42.gh-issue-130077.DkWL_j.rst
new file mode 100644
index 00000000000000..8b2c19688cef6d
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2025-02-16-06-45-42.gh-issue-130077.DkWL_j.rst
@@ -0,0 +1,3 @@
+Fix potential memory leak in c-field representation of Python objects
+
+Resolved a memory leak issue in the `_PyObject_CAST` macro by ensuring proper casting and handling of c-fields. This fix improves memory management and prevents unintended behavior in CPython's internal object representation.