[PATCH] D107339: [analyzer] Retrieve a character from StringLiteral as an initializer for constant arrays.

[Denys Petrov via Phabricator via cfe-commits]

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Assuming that values of constant arrays never change, we can retrieve values for specific position(index) right from the initializer, if presented. Add support of handling `StringLiteral` in `RegionStoreManager::getConstantValFromConstArrayInitializer`. Retrieve a character code by index from `StringLiteral` which is an initializer of constant arrays in global and local scopes.
This patch also disables direct binding a string literal as `LazyCompoundVal` for constant arrays of local storage duration.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D107339

Files:
  clang/lib/StaticAnalyzer/Core/RegionStore.cpp

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