[Bug tree-optimization/85244] [6/7/8 Regression] Bad optimisation with flexible array member (may be related to -ftree-dominator-opts)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85244

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On the other side, this is done only if known_size_p (maxsize), don't we want
to reset it even if maxsize isn't known?