std::exception:: operator=

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Utilities library
General utilities
Relational operators (deprecated in C++20)
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