[Bug c++/107161] gcc doesn't constant fold member if any other member is mutable

[vanyacpp at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107161

--- Comment #2 from Ivan Sorokin <vanyacpp at gmail dot com> ---
> Do constexpr/consteval work in such circumstances?

Yes, constexpr works for variables like "p.a":

extern constexpr mytype p = {1, 2};

int foo()
{
    constexpr int t = p.a + 10;
    return t;
}

foo():
        mov     eax, 11
        ret

https://godbolt.org/z/K9a69E4ar