[Bug c/61240] [6/7/8 Regression] Incorrect warning "integer overflow in expression" on pointer-pointer subtraction

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61240

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It is a regression, so it isn't too late yet.