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Hi all， Clang use a hash table to store all its identifiers. The hash table definition is: typedef llvm::StringMap<IdentifierInfo*, llvm::BumpPtrAllocator> HashTableTy; HashTableTy HashTable; Can anyone explain the mechnism of handling the name string key collision for me? Is there a IdentifierInfo objects chain or list for variable or function with the same name? Thanks very much! Yabin -- The question is how do you generate these offline annotations and ho...