Examples of errors detected by the V690 diagnostic

V690. The class implements a copy constructor/operator=, but lacks the operator=/copy constructor.

Tizen

V690 The 'SQLQueryPrivate' class implements a copy constructor, but lacks the '=' operator. It is dangerous to use such a class. SQLDatabaseImpl.h 26

 class SQLQueryPrivate { public: std::weak_ptr<SQLDatabase> _db_ref; sqlite3 * _db; sqlite3_stmt * _stmt; bool _hasNext; std::string _query; SQLQueryPrivate(std::shared_ptr<SQLDatabase> db_ref, sqlite3 * db, sqlite3_stmt * stmt, const std::string& query); SQLQueryPrivate(const SQLQueryPrivate& other); ~SQLQueryPrivate(); }; SQLQueryPrivate::SQLQueryPrivate(const SQLQueryPrivate& other) : _db_ref(other._db_ref), _db(other._db), _stmt(other._stmt), _hasNext(other._hasNext), _query(other._query) { const_cast<SQLQueryPrivate &>(other)._stmt = NULL; } 

Similar errors can be found in some other places:

• V690 The 'BrowserImage' class implements a copy constructor, but lacks the '=' operator. It is dangerous to use such a class. BrowserImage.h 33
• V690 The 'DownloadRequest' class implements a copy constructor, but lacks the '=' operator. It is dangerous to use such a class. download-manager-downloadRequest.h 30
• V690 The 'CAudioError' class implements the '=' operator, but lacks a copy constructor. It is dangerous to use such a class. CAudioError.h 30
• And 2 additional diagnostic messages.

OpenJDK

V690 Copy constructor is declared as private in the 'ProductionState' class, but the default '=' operator will still be generated by compiler. It is dangerous to use such a class. dfa.cpp 76

 class ProductionState { .... private: // Disable public use of constructor, copy-ctor, ... ProductionState( ) : _production(cmpstr, hashstr, Form::arena) { assert( false, "NotImplemented"); }; ProductionState( const ProductionState & ) : _production(cmpstr, hashstr, Form::arena) { assert( false, "NotImplemented"); }; // Deep-copy }; 

Similar errors can be found in some other places:

• V690 The 'MemRegion' class implements a copy constructor, but lacks the '=' operator. It is dangerous to use such a class. memRegion.hpp 43
• V690 Copy constructor is declared as private in the 'Label' class, but the default '=' operator will still be generated by compiler. It is dangerous to use such a class. assembler.hpp 73

Casablanca

V690 The '=' operator is declared as private in the '_acquire_protector' class, but the default copy constructor will still be generated by compiler. It is dangerous to use such a class. cpprestsdk140.uwp.staticlib fileio_winrt.cpp 825

 struct _acquire_protector { _acquire_protector(....); ~_acquire_protector(); size_t m_size; private: _acquire_protector& operator=(const _acquire_protector&); uint8_t* m_ptr; concurrency::streams::streambuf<uint8_t>& m_buffer; }; 

Bitcoin

V690 The 'CKey' class implements a copy constructor, but lacks the the '=' operator. It is dangerous to use such a class. key.h 175

 class CKey { .... // Copy constructor. This is necessary because of memlocking. CKey(const CKey &secret) : fValid(secret.fValid), fCompressed(secret.fCompressed) { LockObject(vch); memcpy(vch, secret.vch, sizeof(vch)); } .... }; 

Similar errors can be found in some other places:

• V690 The 'Semantic_actions' class implements the '=' operator, but lacks a copy constructor. It is dangerous to use such a class. json_spirit_reader_template.h 196
• V690 The 'CFeeRate' class implements a copy constructor, but lacks the the '=' operator. It is dangerous to use such a class. core.h 118
• V690 The 'CTransaction' class implements the '=' operator, but lacks a copy constructor. It is dangerous to use such a class. core.h 212
• And 3 additional diagnostic messages.