std::exception:: exception
|
|
|
|
Member functions | ||||
exception::exception
|
||||
(1) | ||
exception
(
)
throw
(
)
;
|
(until C++11) | |
exception
(
)
noexcept
;
|
(since C++11)
(constexpr since C++26) |
|
(2) | ||
exception
(
const
exception
&
other
)
throw
(
)
;
|
(until C++11) | |
exception
(
const
exception
&
other
)
noexcept
;
|
(since C++11)
(constexpr since C++26) |
|
Constructs new exception object.
std::exception
then
std::
strcmp
(
what
(
)
, other.
what
(
)
)
==
0
.
Parameters
other | - | another exception to assign the contents of |
Notes
Because copying
std::exception
is not permitted to throw exceptions, when derived classes (such as
std::runtime_error
) have to manage a user-defined diagnostic message, it is typically implemented as a copy-on-write string.
The Microsoft implementation includes non-standard constructors taking strings thus allowing instances to be thrown directly with a meaningful error message. The nearest standard equivalents are std::runtime_error or std::logic_error .
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 | there is no requirement on what() of the exception copy | added |