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.. title:: clang-tidy - modernize-use-nullptr
modernize-use-nullptr
=====================
The check converts the usage of null pointer constants (eg. ``NULL``, ``0``)
to use the new C++11 ``nullptr`` keyword.
Example
-------
.. code-block:: c++
void assignment() {
char *a = NULL;
char *b = 0;
char c = 0;
}
int *ret_ptr() {
return 0;
}
transforms to:
.. code-block:: c++
void assignment() {
char *a = nullptr;
char *b = nullptr;
char c = 0;
}
int *ret_ptr() {
return nullptr;
}
Options
-------
.. option:: NullMacros
Comma-separated list of macro names that will be transformed along with
``NULL``. By default this check will only replace the ``NULL`` macro and will
skip any similar user-defined macros.
Example
^^^^^^^
.. code-block:: c++
#define MY_NULL (void*)0
void assignment() {
void *p = MY_NULL;
}
transforms to:
.. code-block:: c++
#define MY_NULL NULL
void assignment() {
int *p = nullptr;
}
if the :option:`NullMacros` option is set to ``MY_NULL``.
|
