[Bug c++/107065] GCC treats rvalue as an lvalue

[jlame646 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107065

--- Comment #2 from Jason Liam <jlame646 at gmail dot com> ---
Here is another reduced demo: https://godbolt.org/z/hGhfrKrad


```
#include <iostream>
int main() {
    bool b = true;
    std::cout << std::is_same<decltype(!(!b)), bool>::value << "\n";

    auto bb = (!(!b));
    std::cout << std::is_same<decltype(bb), bool>::value << "\n";
}


```