forked from OSchip/llvm-project
31 lines
791 B
ReStructuredText
31 lines
791 B
ReStructuredText
.. title:: clang-tidy - misc-unused-raii
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misc-unused-raii
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================
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Finds temporaries that look like RAII objects.
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The canonical example for this is a scoped lock.
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.. code-block:: c++
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{
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scoped_lock(&global_mutex);
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critical_section();
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}
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The destructor of the scoped_lock is called before the ``critical_section`` is
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entered, leaving it unprotected.
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We apply a number of heuristics to reduce the false positive count of this
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check:
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- Ignore code expanded from macros. Testing frameworks make heavy use of this.
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- Ignore types with trivial destructors. They are very unlikely to be RAII
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objects and there's no difference when they are deleted.
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- Ignore objects at the end of a compound statement (doesn't change behavior).
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- Ignore objects returned from a call.
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