From bbf3d03496dfbde09d2b8be2716fdaaed7098cae Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Wed, 26 Jun 2024 20:11:21 +0200
Subject: [PATCH] gh-120593: Fix const qualifier in _PyLong_CompactValue()
 (#121053)
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Remove the const qualifier of the argument of functions:

* _PyLong_IsCompact()
* _PyLong_CompactValue()

Py_TYPE() argument is not const.

Fix the compiler warning:

  Include/cpython/longintrepr.h: In function ‘_PyLong_CompactValue’:
  Include/pyport.h:19:31: error: cast discards ‘const’ qualifier from
  pointer target type [-Werror=cast-qual]
    (...)
  Include/cpython/longintrepr.h:133:30: note: in expansion of macro
  ‘Py_TYPE’
    assert(PyType_HasFeature(Py_TYPE(op), Py_TPFLAGS_LONG_SUBCLASS));
---
 Include/cpython/longintrepr.h  | 4 ++--
 Include/internal/pycore_long.h | 4 ++--
 Objects/longobject.c           | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Include/cpython/longintrepr.h b/Include/cpython/longintrepr.h
index 66623780ca93e01..d841c043f37fc49 100644
--- a/Include/cpython/longintrepr.h
+++ b/Include/cpython/longintrepr.h
@@ -119,7 +119,7 @@ PyAPI_FUNC(PyLongObject*) _PyLong_FromDigits(
 
 
 static inline int
-_PyLong_IsCompact(const PyLongObject* op) {
+_PyLong_IsCompact(PyLongObject* op) {
     assert(PyType_HasFeature(Py_TYPE(op), Py_TPFLAGS_LONG_SUBCLASS));
     return op->long_value.lv_tag < (2 << _PyLong_NON_SIZE_BITS);
 }
@@ -127,7 +127,7 @@ _PyLong_IsCompact(const PyLongObject* op) {
 #define PyUnstable_Long_IsCompact _PyLong_IsCompact
 
 static inline Py_ssize_t
-_PyLong_CompactValue(const PyLongObject *op)
+_PyLong_CompactValue(PyLongObject *op)
 {
     Py_ssize_t sign;
     assert(PyType_HasFeature(Py_TYPE(op), Py_TPFLAGS_LONG_SUBCLASS));
diff --git a/Include/internal/pycore_long.h b/Include/internal/pycore_long.h
index 8513695c22e703e..2bf6ff459ddc961 100644
--- a/Include/internal/pycore_long.h
+++ b/Include/internal/pycore_long.h
@@ -240,7 +240,7 @@ static inline int
 _PyLong_CompactSign(const PyLongObject *op)
 {
     assert(PyLong_Check(op));
-    assert(_PyLong_IsCompact(op));
+    assert(_PyLong_IsCompact((PyLongObject *)op));
     return 1 - (op->long_value.lv_tag & SIGN_MASK);
 }
 
@@ -248,7 +248,7 @@ static inline int
 _PyLong_NonCompactSign(const PyLongObject *op)
 {
     assert(PyLong_Check(op));
-    assert(!_PyLong_IsCompact(op));
+    assert(!_PyLong_IsCompact((PyLongObject *)op));
     return 1 - (op->long_value.lv_tag & SIGN_MASK);
 }
 
diff --git a/Objects/longobject.c b/Objects/longobject.c
index a3a59a20f0bb977..86afec9a4141341 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -6672,12 +6672,12 @@ _PyLong_FiniTypes(PyInterpreterState *interp)
 
 int
 PyUnstable_Long_IsCompact(const PyLongObject* op) {
-    return _PyLong_IsCompact(op);
+    return _PyLong_IsCompact((PyLongObject*)op);
 }
 
 #undef PyUnstable_Long_CompactValue
 
 Py_ssize_t
 PyUnstable_Long_CompactValue(const PyLongObject* op) {
-    return _PyLong_CompactValue(op);
+    return _PyLong_CompactValue((PyLongObject*)op);
 }