/// containing function, return the number of bytes known to be
/// dereferenceable. Otherwise, zero is returned.
uint64_t getDereferenceableBytes() const;
+
+ /// \brief If this argument has the dereferenceable_or_null attribute on
+ /// it in its containing function, return the number of bytes known to be
+ /// dereferenceable. Otherwise, zero is returned.
+ uint64_t getDereferenceableOrNullBytes() const;
/// \brief Return true if this argument has the byval attribute on it in its
/// containing function.