Issue #1717: rename tp_compare to tp_reserved. I'll change the
type of tp_compare in a separate commit, for ease of reversion
should things go wrong.
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index a05b3c6..e77b2dc 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -1819,7 +1819,7 @@
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
- 0, /* tp_compare */
+ 0, /* tp_reserved */
(reprfunc)float_repr, /* tp_repr */
&float_as_number, /* tp_as_number */
0, /* tp_as_sequence */