[gojomo]

Good find!

But, are you sure the 10.8.5 (-55179.13) version isn't in some sense a later, patched maintenance branch compared to a 10.9 (-55471) that might have been frozen earlier? The release dates are very close (~2013-10-03 for 10.8.5; ~2013-10-22 for 10.9), and they might have already been separate branches.

(Is there a 10.8.4 version to compare?)

[alex1]

Good point. I just checked that file ever since it was open-sourced in 10.8 and it stays exactly the same throughout all of 10.8.x (10.8 - 10.8.5) and only changes in 10.9. (You can check for yourself here: http://opensource.apple.com/)

It doesn't seem like what you said is the case here but obviously we're still missing changesets that may have been committed between 10.8.5 (Security-55179.13) and 10.9 (Security-55471). It'd be really interesting to do a git-blame on that file.

EDIT: Nevermind, that file wasn't open-sourced in 10.8. It's actually really old. (Look for directories starting with libsecurity_ssl in pre-10.8 OS X versions.) Didn't find anything particularly interesting in the old versions though.

[gojomo]

Thanks for clarifying. I know silly errors like this can slip in, but I hope Apple does a deep x-ray on all circumstances surrounding the change.

[grkhetan]

This bug of an extra duplicate line looks like a merge issue to me.