Index: Include/abstract.h
===================================================================
--- Include/abstract.h	(revision 83123)
+++ Include/abstract.h	(working copy)
@@ -283,7 +283,7 @@
        */
 
      PyAPI_FUNC(PyObject *) PyObject_CallFunction(PyObject *callable_object,
-                                                  char *format, ...);
+                                                  const char *format, ...);
 
        /*
      Call a callable Python object, callable_object, with a
@@ -295,8 +295,8 @@
        */
 
 
-     PyAPI_FUNC(PyObject *) PyObject_CallMethod(PyObject *o, char *method,
-                                                char *format, ...);
+     PyAPI_FUNC(PyObject *) PyObject_CallMethod(PyObject *o, const char *method,
+                                                const char *format, ...);
 
        /*
      Call the method named m of object o with a variable number of
@@ -308,10 +308,10 @@
        */
 
      PyAPI_FUNC(PyObject *) _PyObject_CallFunction_SizeT(PyObject *callable,
-                                                         char *format, ...);
+                                                         const char *format, ...);
      PyAPI_FUNC(PyObject *) _PyObject_CallMethod_SizeT(PyObject *o,
-                                                       char *name,
-                                                       char *format, ...);
+                                                       const char *name,
+                                                       const char *format, ...);
 
      PyAPI_FUNC(PyObject *) PyObject_CallFunctionObjArgs(PyObject *callable,
                                                          ...);
Index: Objects/abstract.c
===================================================================
--- Objects/abstract.c	(revision 83123)
+++ Objects/abstract.c	(working copy)
@@ -2186,7 +2186,7 @@
 }
 
 PyObject *
-PyObject_CallFunction(PyObject *callable, char *format, ...)
+PyObject_CallFunction(PyObject *callable, const char *format, ...)
 {
     va_list va;
     PyObject *args;
@@ -2206,7 +2206,7 @@
 }
 
 PyObject *
-_PyObject_CallFunction_SizeT(PyObject *callable, char *format, ...)
+_PyObject_CallFunction_SizeT(PyObject *callable, const char *format, ...)
 {
     va_list va;
     PyObject *args;
@@ -2226,7 +2226,7 @@
 }
 
 PyObject *
-PyObject_CallMethod(PyObject *o, char *name, char *format, ...)
+PyObject_CallMethod(PyObject *o, const char *name, const char *format, ...)
 {
     va_list va;
     PyObject *args;
@@ -2265,7 +2265,7 @@
 }
 
 PyObject *
-_PyObject_CallMethod_SizeT(PyObject *o, char *name, char *format, ...)
+_PyObject_CallMethod_SizeT(PyObject *o, const char *name, const char *format, ...)
 {
     va_list va;
     PyObject *args;
Index: Doc/c-api/object.rst
===================================================================
--- Doc/c-api/object.rst	(revision 83123)
+++ Doc/c-api/object.rst	(working copy)
@@ -208,7 +208,7 @@
    of the Python expression ``callable_object(*args)``.
 
 
-.. cfunction:: PyObject* PyObject_CallFunction(PyObject *callable, char *format, ...)
+.. cfunction:: PyObject* PyObject_CallFunction(PyObject *callable, const char *format, ...)
 
    Call a callable Python object *callable*, with a variable number of C arguments.
    The C arguments are described using a :cfunc:`Py_BuildValue` style format
@@ -218,9 +218,12 @@
    pass :ctype:`PyObject \*` args, :cfunc:`PyObject_CallFunctionObjArgs` is a
    faster alternative.
 
+   .. versionchanged:: 3.2
+      `format` was changed from ``char *``
 
-.. cfunction:: PyObject* PyObject_CallMethod(PyObject *o, char *method, char *format, ...)
 
+.. cfunction:: PyObject* PyObject_CallMethod(PyObject *o, const char *method, const char *format, ...)
+
    Call the method named *method* of object *o* with a variable number of C
    arguments.  The C arguments are described by a :cfunc:`Py_BuildValue` format
    string that should  produce a tuple.  The format may be *NULL*, indicating that
@@ -229,7 +232,10 @@
    Note that if you only pass :ctype:`PyObject \*` args,
    :cfunc:`PyObject_CallMethodObjArgs` is a faster alternative.
 
+   .. versionchanged:: 3.2
+      `method` and `format` were changed from ``char *``
 
+
 .. cfunction:: PyObject* PyObject_CallFunctionObjArgs(PyObject *callable, ..., NULL)
 
    Call a callable Python object *callable*, with a variable number of