Immortal objects now have a fixed refcount, which makes this test fail:

checking python testcase langobj (with run test)
Traceback (most recent call last):
  File "/builddir/build/BUILD/swig-4.1.1/Examples/test-suite/python/./langobj_runme.py", line 13, in <module>
    raise RuntimeError
RuntimeError
make[1]: *** [Makefile:123: langobj.cpptest] Error 1

See https://peps.python.org/pep-0683/ for more information.

--- swig-4.1.1/Examples/test-suite/python/langobj_runme.py.orig	2022-11-30 00:35:05.000000000 -0700
+++ swig-4.1.1/Examples/test-suite/python/langobj_runme.py	2023-07-12 15:48:18.745852293 -0600
@@ -2,7 +2,7 @@ import sys
 from langobj import *
 
 
-x = "hello"
+x = (1,2)
 rx = sys.getrefcount(x)
 v = identity(x)
 rv = sys.getrefcount(v)