[Bug c/70772] Wrong warning about unspecified behavior for comparison with string literal

[ch3root at openwall dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70772

--- Comment #1 from Alexander Cherepanov <ch3root at openwall dot com> ---
clang bug -- https://llvm.org/bugs/show_bug.cgi?id=27495 .