[Bug c++/116369] [12/13/14/15 Regression] temporary variable bounded to const reference with mutable field incorrectly marked as rodata

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116369

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Run test:
```
struct f{
  mutable int t;
};

const f &g = {1};

int main()
{
  g.t++;
}
```