[Bug tree-optimization/107952] tree-object-size: inconsistent size for flexible arrays nested in structs

[siddhesh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107952

--- Comment #16 from Siddhesh Poyarekar <siddhesh at gcc dot gnu.org> ---
(In reply to Qing Zhao from comment #15)
> Since S2.flex is not an “array_ref”, it’s correct for
> array_ref_fleixble_size_p to return false for it, I think. 
> We might add a new utility routine to determine whether a ref to a struct or
> union have flexible array?

It will be useful for __bos/__bdos for sure.