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