================
@@ -425,6 +425,12 @@ Attribute Changes in Clang
size_t count;
};
+- The attributes ``sized_by``, ``counted_by_or_null`` and ``sized_by_or_null```
+ have been added as variants on ``counted_by``, each with slightly different
semantics.
+ ``sized_by`` takes a byte size parameter instead of an element count,
allowing pointees
+ with unknown size. The ``counted_by_or_null`` and ``sized_by_or_null``
variants are equivalent
+ to their base variants, except the pointer can be null regardless of
count/size value.
----------------
rapidsna wrote:
It would be nice to add a suggested use case for `sized_by_or_null`. e.g., an
allocator that returns either a buffer of size or nullptr.
https://github.com/llvm/llvm-project/pull/93231
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