As no answer had the required +6 votes at the end of the voting period, no change was implemented.
Every now and then we get questions that post a snippet of cryptographic code and ask for non-side-channel related code review.
If this happens a mod usually migrates the question where it belongs: To CodeReview.SE as StackOverflow is mainly intended for code that is not (yet) functionally correct whereas CodeReview.SE handles code that is already functionally correct.
However our current programming close reason reads as follows:
Programming questions are off-topic even if you are writing or debugging cryptographic code. Unless your question is specifically about how the cryptographic algorithm, protocol or side-channel (mitigation) works, you should look into asking on Stack Overflow instead.
This will however probably send people wanting a code review over to StackOverflow because they probably won't read the link where they'll ask again and be down-voted because SO doesn't do code reviews.
So I suggest the following changed wording:
Programming questions are off-topic even if you are writing, debugging or reviewing cryptographic code. Unless your question is specifically about how the cryptographic algorithm, protocol or side-channel (mitigation) works, you should look into asking on Stack Overflow or on CodeReview instead.
We'll do the usual procedure: One full month to vote on the answers to express which version you want and of course anyone can still suggest yet another alternative (at most 400 characters long including links).
If no answer reaches at least +6, no change will be implemented.
Since the start of May we had about 41 migrations to other sites. One of those was to Code Review, 12 were to StackOverflow, 28 to other sites. 10k users can valiadate this data here.
During the past 30 days we closed 10 questions as programming related questions with the given default reason. A search revealed that probably all of the questions closed this way would actually be a better fit for StackOverflow than CodeReview as they were asking about incomplete code. This number of 10 is in addition to migrations. Additionally we closed one question with a custom reason referencing CodeReview.