EXP40|C. Do not modify constant objects

EXP40-C. Do not modify constant objects - Confluence

EXP40-C. Do not modify constant objects ... If an attempt is made to modify an object defined with a const -qualified type through use of an lvalue with non- ...

EXP40-C. Do not modify constant objects

EXP40-C. Do not modify constant objects. The C Standard, 6.7.4, paragraph 7 [. ], states. ISO/IEC 9899:2024. If an attempt is made to modify an object defined ...

Modifying const object through pointer obtained during construction

To get logical constness, you 1) use mutable (or sometimes const_cast ) to allow modification of members that don't affect the object's logical state.

Const member functions in C++ - GeeksforGeeks

The idea of const functions is not to allow them to modify the object on which they are called. It is recommended practice to make as many ...

Changing const object - no warning? Also, in which case it is UB?

On the other hand, the C-language standard does not ... The qualifier const is only a contract that the function is not supposed to modify dest .

Could the compiler know what is const even if it is not set as const?

C++ makes it undefined behaviour to modify a const object. However, a const reference might refer to a const object or a non const one, and it ...

In C/C++, should I use 'const' in parameters and local variables ...

Libraries might accept const parameters in order to provide a guarantee to the programmer that no, your object will not change in an ...

In C++, can you modify a variable/member of a const ... - Quora

C++: Can an object legally be changed even though there is a const reference (pointer) to it? What is constant is the reference, not the ...

const_cast and modify? : r/cpp_questions - Reddit

You can not use const_cast to modify const variable. You can write ... Even mem is a constant pointer to a constant object. The const ...

Constant Objects and Constant Member Functions

The this pointer passed to a const member function is a pointer to a const object. That means the pointer can not be used to modify the object's data members.

C++ PATCH for c++/91264 - detect modifying const objects in constexp

Re: C++ PATCH for c++/91264 - detect modifying const objects ... const and volatile semantics are not applied on an object under construction.

When and for what purposes should the const keyword be used in C ...

Always use const for function parameters passed by reference where the function does not modify (or free) the data pointed to.

const (C++) | Microsoft Learn

... modifying a parameter passed through a pointer. For objects that are declared as const , you can only call constant member functions. The ...

const_iterator - C++ Forum - CPlusPlus.com

A second characteristic of iterators is whether or not they can be used to modify the values held by their associated container. A constant iterator is one ...

Const Correctness, C++ FAQ - Standard C++

The lack of const in these functions tells the compiler that they are allowed to (but are not required to) change the caller's std::string object. Thus they can ...

C++ Core Guidelines - GitHub Pages

Triple question marks (???) mark known missing information; Update reference sections; many pre-C++11 sources are too old. For a more-or-less up ...

const - JavaScript - MDN Web Docs - Mozilla

... const over let whenever a variable is not ... However, object keys are not protected, so the following statement is executed without problem.

const type qualifier - cppreference.com - C++ Reference

... modify an object whose type is const ... const-qualified compound literals do not necessarily designate distinct objects; they may ...

Using const in C++ - Data Respons R&D Services

const int c = 299'792'458; std::println("The speed of light is {} m/s", c); // OK: reading the value of c. c += 1; // Error: modifying c is not allowed. c = 300 ...

How to modify a const variable in C? - GeeksforGeeks

In C, while it may only generate a warning, it is not recommended due to potential undefined behavior and the violation of const correctness.