std::exception::operator=

 

C++

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General utilities Date and time Function objects Formatting library (C++20)   bitset hash (C++11) Relational operators (deprecated in C++20) rel_ops::operator!=rel_ops::operator>    rel_ops::operator<=rel_ops::operator>= Integer comparison functions cmp_equalcmp_lesscmp_less_than (C++20)(C++20)(C++20)   cmp_not_equalcmp_greatercmp_greater_than (C++20)(C++20)(C++20) in_range (C++20) Swap and type operations swap ranges::swap (C++20) exchange (C++14) declval (C++11) to_underlying (C++23) forward (C++11) forward_like (C++23) move (C++11) move_if_noexcept (C++11) as_const (C++17) Common vocabulary types pair tuple (C++11) optional (C++17) any (C++17) variant (C++17) tuple_size (C++11) tuple_element (C++11) apply (C++17) make_from_tuple (C++17) expected (C++23) Elementary string conversions to_chars (C++17) from_chars (C++17) chars_format (C++17) to_chars_result (C++17) from_chars_result (C++17)

 

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std::exception

Member functions

exception::exception

exception::~exception

exception::operator=

exception::what

 

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

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