[PATCH] D58797: [Sema] Add some compile time _FORTIFY_SOURCE diagnostics

[Erik Pilkington via Phabricator via cfe-commits]

erik.pilkington added a comment.

In D58797#1443411 <https://reviews.llvm.org/D58797#1443411>, @efriedma wrote:

> For that particular case, I think we could suppress the false positive using DiagRuntimeBehavior.  How many total false positives are we talking about, and how many can the compiler statically prove are unreachable?


Sure, that seems like a perfect fit, I added it in r357041. There are only two false-positives IIUC, and they're both immediately guarded by an `if (sizeof(x) == sizeof(y))`.


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