pythoncapi
diff --git a/‎Lib/test/test_cprofile.py‎
Lines changed: 5 additions & 5 deletions b/‎Lib/test/test_cprofile.py‎
Lines changed: 5 additions & 5 deletions
diff --git a/‎Misc/NEWS‎
Lines changed: 3 additions & 0 deletions b/‎Misc/NEWS‎
Lines changed: 3 additions & 0 deletions
diff --git a/‎Modules/_lsprof.c‎
Lines changed: 9 additions & 2 deletions b/‎Modules/_lsprof.c‎
Lines changed: 9 additions & 2 deletions
@@ -11,7 +11,7 @@
 class CProfileTest(ProfileTest):
     profilerclass = cProfile.Profile
     profilermodule = cProfile
-    expected_max_output = "{built-in method max}"
+    expected_max_output = "{built-in method builtins.max}"
 
     def get_expected_output(self):
         return _ProfileOutput
@@ -72,9 +72,9 @@ def main():
 profilee.py:88(helper2)                           <-       6    0.234    0.300  profilee.py:55(helper)
                                                            2    0.078    0.100  profilee.py:84(helper2_indirect)
 profilee.py:98(subhelper)                         <-       8    0.064    0.080  profilee.py:88(helper2)
-{built-in method exc_info}                        <-       4    0.000    0.000  profilee.py:73(helper1)
-{built-in method hasattr}                         <-       4    0.000    0.004  profilee.py:73(helper1)
+{built-in method builtins.hasattr}                <-       4    0.000    0.004  profilee.py:73(helper1)
                                                            8    0.000    0.008  profilee.py:88(helper2)
+{built-in method sys.exc_info}                    <-       4    0.000    0.000  profilee.py:73(helper1)
 {method 'append' of 'list' objects}               <-       4    0.000    0.000  profilee.py:73(helper1)"""
 _ProfileOutput['print_callees'] = """\
 <string>:1(<module>)                              ->       1    0.270    1.000  profilee.py:25(testfunc)
@@ -87,12 +87,12 @@ def main():
 profilee.py:55(helper)                            ->       4    0.116    0.120  profilee.py:73(helper1)
                                                            2    0.000    0.140  profilee.py:84(helper2_indirect)
                                                            6    0.234    0.300  profilee.py:88(helper2)
-profilee.py:73(helper1)                           ->       4    0.000    0.000  {built-in method exc_info}
+profilee.py:73(helper1)                           ->       4    0.000    0.004  {built-in method builtins.hasattr}
 profilee.py:84(helper2_indirect)                  ->       2    0.006    0.040  profilee.py:35(factorial)
                                                            2    0.078    0.100  profilee.py:88(helper2)
 profilee.py:88(helper2)                           ->       8    0.064    0.080  profilee.py:98(subhelper)
 profilee.py:98(subhelper)                         ->      16    0.016    0.016  profilee.py:110(__getattr__)
-{built-in method hasattr}                         ->      12    0.012    0.012  profilee.py:110(__getattr__)"""
+{built-in method builtins.hasattr}                ->      12    0.012    0.012  profilee.py:110(__getattr__)"""
 
 if __name__ == "__main__":
     main()
@@ -103,6 +103,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #21863: cProfile now displays the module name of C extension functions,
+  in addition to their own name.
+
 - Issue #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper
   object is destroyed. The destructor now closes the file if needed. The
   close() method can now be called twice: the second call does nothing.
 
@@ -202,6 +202,8 @@ normalizeUserObj(PyObject *obj)
         */
         PyObject *self = fn->m_self;
         PyObject *name = PyUnicode_FromString(fn->m_ml->ml_name);
+        PyObject *modname = fn->m_module;
+
         if (name != NULL) {
             PyObject *mo = _PyType_Lookup(Py_TYPE(self), name);
             Py_XINCREF(mo);
@@ -213,9 +215,14 @@ normalizeUserObj(PyObject *obj)
                     return res;
             }
         }
+        /* Otherwise, use __module__ */
         PyErr_Clear();
-        return PyUnicode_FromFormat("<built-in method %s>",
-                                    fn->m_ml->ml_name);
+        if (modname != NULL && PyUnicode_Check(modname))
+            return PyUnicode_FromFormat("<built-in method %S.%s>",
+                                        modname,  fn->m_ml->ml_name);
+        else
+            return PyUnicode_FromFormat("<built-in method %s>",
+                                        fn->m_ml->ml_name);
     }
 }
Original file line number	Diff line number	Diff line change
`@@ -202,6 +202,8 @@ normalizeUserObj(PyObject *obj)`
`202`	`202`	`*/`
`203`	`203`	`PyObject *self = fn->m_self;`
`204`	`204`	`PyObject *name = PyUnicode_FromString(fn->m_ml->ml_name);`
	`205`	`+ PyObject *modname = fn->m_module;`
	`206`	`+`
`205`	`207`	`if (name != NULL) {`
`206`	`208`	`PyObject *mo = _PyType_Lookup(Py_TYPE(self), name);`
`207`	`209`	`Py_XINCREF(mo);`
`@@ -213,9 +215,14 @@ normalizeUserObj(PyObject *obj)`
`213`	`215`	`return res;`
`214`	`216`	`}`
`215`	`217`	`}`
	`218`	`+ /* Otherwise, use __module__ */`
`216`	`219`	`PyErr_Clear();`
`217`		`- return PyUnicode_FromFormat("<built-in method %s>",`
`218`		`- fn->m_ml->ml_name);`
	`220`	`+ if (modname != NULL && PyUnicode_Check(modname))`
	`221`	`+ return PyUnicode_FromFormat("<built-in method %S.%s>",`
	`222`	`+ modname, fn->m_ml->ml_name);`
	`223`	`+ else`
	`224`	`+ return PyUnicode_FromFormat("<built-in method %s>",`
	`225`	`+ fn->m_ml->ml_name);`
`219`	`226`	`}`
`220`	`227`	`}`
`221`	`228`