[PATCH] D103319: [analyzer] Use Optional as a return type of StoreManager::castRegion

[Artem Dergachev via Phabricator via cfe-commits]

NoQ accepted this revision.
NoQ added a comment.
This revision is now accepted and ready to land.

Looks great, thanks!

I guess another option is to put `loc::MemRegionVal()` inside `castRegion()`. This way the return type `Optional<loc::MemRegionVal>` unambigously tells that the region is always non-null if present (protected by the assertion in the constructor of `loc::MemRegionVal`).


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  https://reviews.llvm.org/D103319/new/

https://reviews.llvm.org/D103319