# std::exception::operator=

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< cpp‎ | error‎ | exception

exception& operator=( const exception& other ) throw(); |  | (until C++11)
exception& operator=( const exception& other ) noexcept; |  | (since C++11) (constexpr since C++26)

Copy assignment operator. Assigns the contents of other.

If *this and other both have dynamic type `std::exception` then std::strcmp (what(), other.what()) == 0 after assignment.

### Parameters

other | - | another exception to assign the contents of

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
LWG 471 | C++98 | the effects of calling what() after assignment are implementation-defined | required to be the same as the original what() if the dynamic types are the same

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