[Bug c++/70495] false warning: comparison between signed and unsigned integer expressions

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70495

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
http://en.cppreference.com/w/cpp/language/implicit_cast#Integral_promotion