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.. title:: clang-tidy - modernize-use-noexcept
modernize-use-noexcept
======================
This check replaces deprecated dynamic exception specifications with
the appropriate noexcept specification (introduced in C++11). By
default this check will replace ``throw()`` with ``noexcept``,
and ``throw(<exception>[,...])`` or ``throw(...)`` with
``noexcept(false)``.
Example
-------
.. code-block:: c++
void foo() throw();
void bar() throw(int) {}
transforms to:
.. code-block:: c++
void foo() noexcept;
void bar() noexcept(false) {}
Options
-------
.. option:: ReplacementString
Users can use :option:`ReplacementString` to specify a macro to use
instead of ``noexcept``. This is useful when maintaining source code
that uses custom exception specification marking other than
``noexcept``. Fix-it hints will only be generated for non-throwing
specifications.
Example
^^^^^^^
.. code-block:: c++
void bar() throw(int);
void foo() throw();
transforms to:
.. code-block:: c++
void bar() throw(int); // No fix-it generated.
void foo() NOEXCEPT;
if the :option:`ReplacementString` option is set to `NOEXCEPT`.
.. option:: UseNoexceptFalse
Enabled by default, disabling will generate fix-it hints that remove
throwing dynamic exception specs, e.g., ``throw(<something>)``,
completely without providing a replacement text, except for
destructors and delete operators that are ``noexcept(true)`` by
default.
Example
^^^^^^^
.. code-block:: c++
void foo() throw(int) {}
struct bar {
void foobar() throw(int);
void operator delete(void *ptr) throw(int);
void operator delete[](void *ptr) throw(int);
~bar() throw(int);
}
transforms to:
.. code-block:: c++
void foo() {}
struct bar {
void foobar();
void operator delete(void *ptr) noexcept(false);
void operator delete[](void *ptr) noexcept(false);
~bar() noexcept(false);
}
if the :option:`UseNoexceptFalse` option is set to `false`.
|
