I wrote: > After a bit more thought, HEAD+v14 is also my preference. I'm not > eager to change this in stable branches, but it doesn't seem too > late for v14.
Perusing the commit log, I realized that there's another reason why v14 is a good cutoff: thread_test.c was in a different place with an allegedly different raison d'etre before 8a2121185. So done that way. regards, tom lane