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[NFC][analyzer] Add missing documentation for decodeValueOfObjCType #167822

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Nov 17, 2025
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[NFC][analyzer] Add missing documentation for decodeValueOfObjCType #167822

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[NFC][analyzer] Add missing document for `decodeValueOfObjCType`
zeyi2 Nov 13, 2025
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zeyi2 Nov 13, 2025
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Update clang/docs/analyzer/checkers.rst
zeyi2 Nov 13, 2025
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19 changes: 18 additions & 1 deletion clang/docs/analyzer/checkers.rst
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Expand Up @@ -198,7 +198,7 @@ as error. Specifically on x86/x86-64 target if the pointer address space is
dereference is not defined as error. See `X86/X86-64 Language Extensions
<https://clang.llvm.org/docs/LanguageExtensions.html#memory-references-to-specified-segments>`__
for reference.

If the analyzer option ``suppress-dereferences-from-any-address-space`` is set
to true (the default value), then this checker never reports dereference of
pointers with a specified address space. If the option is set to false, then
Expand Down Expand Up @@ -1664,6 +1664,23 @@ Warn on uses of the 'bzero' function.
bzero(ptr, n); // warn
}

.. _security-insecureAPI-decodeValueOfObjCType:

security.insecureAPI.decodeValueOfObjCType (C)
""""""""""""""""""""""""""""""""""""""""""""""
Warn on uses of the Objective-C method ``-decodeValueOfObjCType:at:``.

.. code-block:: objc

void test(NSCoder *decoder) {
unsigned int x;
[decoder decodeValueOfObjCType:"I" at:&x]; // warn
}

This diagnostic is emitted only on Apple platforms where the safer
``-decodeValueOfObjCType:at:size:`` alternative is available
(iOS 11+, macOS 10.13+, tvOS 11+, watchOS 4.0+).

.. _security-insecureAPI-getpw:

security.insecureAPI.getpw (C)
Expand Down
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