[clang] [analyzer] Wrap SymbolicRegions by ElementRegions before getting a FieldRegion (PR #85211)

[Balazs Benics via cfe-commits]

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@@ -451,6 +451,38 @@ void ProgramState::setStore(const StoreRef &newStore) {
   store = newStoreStore;
 }
 
+/// FieldRegions are expected to be wrapped by an ElementRegion as a canonical
+/// representation. See f8643a9b31c4029942f67d4534c9139b45173504 why.
+static SVal wrapSymbolicRegion(const ProgramState &State, SVal Base) {
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steakhal wrote:

Makes sense. Moved into a private member function.

https://github.com/llvm/llvm-project/pull/85211