[PATCH] D26838: [analyzer] Enforce super-region classes for various memory regions through compile-time and run-time type checks.

[Artem Dergachev via cfe-commits]

NoQ created this revision.
NoQ added reviewers: zaks.anna, dcoughlin, xazax.hun, a.sidorin.
NoQ added a subscriber: cfe-commits.

Put a lot of compile-time and run-time checks on classes of super regions of all `SubRegion` classes, in order to maintain the existing status quo.
This should make understanding the hierarchy easier, and probably help us catch some bugs.

This is an API-breaking change (we now require explicit casts to specific region sub-classes), but in practice very few checkers are affected.


https://reviews.llvm.org/D26838

Files:
  include/clang/StaticAnalyzer/Core/PathSensitive/MemRegion.h
  include/clang/StaticAnalyzer/Core/PathSensitive/Store.h
  lib/StaticAnalyzer/Checkers/MPI-Checker/MPIChecker.cpp
  lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
  lib/StaticAnalyzer/Core/MemRegion.cpp
  lib/StaticAnalyzer/Core/RegionStore.cpp
  lib/StaticAnalyzer/Core/SimpleSValBuilder.cpp
  lib/StaticAnalyzer/Core/Store.cpp

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