Hi, hackers
When I read [1], I think the "counted_by" attribute may also be valuable for PostgreSQL. The 'counted_by' attribute is used on flexible array members. The argument for the attribute is the name of the field member in the same structure holding the count of elements in the flexible array. This information can be used to improve the results of the array bound sanitizer and the '__builtin_dynamic_object_size' builtin [2]. It was introduced in Clang-18 [3] and will soon be available in GCC-15. [1] https://embeddedor.com/blog/2024/06/18/how-to-use-the-new-counted_by-attribute-in-c-and-linux/ [2] https://reviews.llvm.org/D148381 [3] https://godbolt.org/z/5qKsEhG8o -- Regrads, Japin Li
