Oops. The value "0 or +1" for the category argument of PyErr_Warn()
doesn't work. Make it 0. (Although it really *should* be 0 or +1 --
the refcount is incremented when it is raised as an exception, but not
otherwise.)
diff --git a/Doc/api/refcounts.dat b/Doc/api/refcounts.dat
index 0d8d6af..2777d9f 100644
--- a/Doc/api/refcounts.dat
+++ b/Doc/api/refcounts.dat
@@ -207,7 +207,7 @@
PyErr_Format::...::
PyErr_Warn:int:::
-PyErr_Warn:PyObject*:category:0 or +1:
+PyErr_Warn:PyObject*:category:0:
PyErr_Warn:char*:message::
PyEval_AcquireLock:void:::