Change to skip

include/pybind11/functional.h

@@ -61,6 +61,10 @@ struct type_caster<std::function<Return(Args...)>> {
                     rec = rec->next;
                 }
             }
+            // PYPY segfaults here when passing builtin function like sum.
+            // Raising an fail exception here works to prevent the segfault, but only on gcc.
+            // TODO debug PyPy segfault or figure out a way to raise an error on PyPy on all platforms,.
+            // See PR #1413
         }
 
         // ensure GIL is held during functor destruction

tests/test_callbacks.py

@@ -125,10 +125,9 @@ def test_movable_object():
     assert m.callback_with_movable(lambda _: None) is True
 
 
-@pytest.mark.xfail(
+@pytest.mark.skip(
     "env.PYPY",
-    reason="We raise an error to avoid a segfault in PyPy.",
-    raises=TypeError,
+    reason="PyPy segfaults on here. See discussion on #1413.",
 )
 def test_python_builtins():
     """Test if python builtins like sum() can be used as callbacks"""