Added the const qualifier for char* argument of Py_EnterRecursiveCall().
diff --git a/Doc/c-api/exceptions.rst b/Doc/c-api/exceptions.rst
index 66b7752..d89c31c 100644
--- a/Doc/c-api/exceptions.rst
+++ b/Doc/c-api/exceptions.rst
@@ -621,7 +621,7 @@
recursive code does not necessarily invoke Python code (which tracks its
recursion depth automatically).
-.. c:function:: int Py_EnterRecursiveCall(char *where)
+.. c:function:: int Py_EnterRecursiveCall(const char *where)
Marks a point where a recursive C-level call is about to be performed.
diff --git a/Include/ceval.h b/Include/ceval.h
index 6811367..4937f2c 100644
--- a/Include/ceval.h
+++ b/Include/ceval.h
@@ -77,7 +77,7 @@
do{ if(_Py_MakeEndRecCheck(PyThreadState_GET()->recursion_depth)) \
PyThreadState_GET()->overflowed = 0; \
} while(0)
-PyAPI_FUNC(int) _Py_CheckRecursiveCall(char *where);
+PyAPI_FUNC(int) _Py_CheckRecursiveCall(const char *where);
PyAPI_DATA(int) _Py_CheckRecursionLimit;
#ifdef USE_STACKCHECK
diff --git a/Python/ceval.c b/Python/ceval.c
index 7656b8e..2752298 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -710,7 +710,7 @@
to guarantee that _Py_CheckRecursiveCall() is regularly called.
Without USE_STACKCHECK, there is no need for this. */
int
-_Py_CheckRecursiveCall(char *where)
+_Py_CheckRecursiveCall(const char *where)
{
PyThreadState *tstate = PyThreadState_GET();