[Bug c++/64767] Could GCC warn when a pointer is compared against '\0'?

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64767

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, although C says '\0' has type int the compiler can still distinguish the
token '\0' from 0 during compilation.