Is there a way to find out by examining publicly available information ?
If you have a copy of the git repository, you could try looking for a similar subject line in the maint branches: 
$ git log --oneline  --grep 108378 origin/maint-5.20
b79536e lib/locale.t: Remove workaround for now fixed #108378
b127e37 PATCH: [perl #108378] [perl #115800]
$ git log --oneline  --grep 108378 origin/maint-5.18
$ git log --oneline  --grep 108378 origin/maint-5.16
$

[download]
I couldn't find a perl5183delta.pod in my perl-5.25.6 source download. (WTF ?)
That's an interesting oversight!

Dave.

In reply to Re: Determining if a change in perl was backported by dave_the_m
in thread Determining if a change in perl was backported by syphilis

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