Imposes limitations on the use of const_cast within C++ code. It depends on the StrictMode option setting to determine whether it should flag all instances of const_cast or only those that remove either const or volatile qualifier.

Modifying a variable that has been declared as const in C++ is generally considered undefined behavior, and this remains true even when using const_cast. In C++, the const qualifier indicates that a variable is intended to be read-only, and the compiler enforces this by disallowing any attempts to change the value of that variable.

Removing the volatile qualifier in C++ can have serious consequences. This qualifier indicates that a variable’s value can change unpredictably, and removing it may lead to undefined behavior, optimization problems, and debugging challenges. It’s essential to retain the volatile qualifier in situations where the variable’s volatility is a crucial aspect of program correctness and reliability.

This rule is part of the Type safety (Type 3) profile and ES.50: Don’t cast away const rule from the C++ Core Guidelines.



When this setting is set to true, it means that any usage of const_cast is not allowed. On the other hand, when it’s set to false, it permits casting to const or volatile types. Default value is false.