[Bug c++/113884] GCC rejects valid program saying ambiguous call when using std::vector

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113884

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced to:
```
struct B
{
  B(double);
};

struct C
{
  C(int);
};


void func(B);
void func(C);

int main() {
    func({ 4.2 });
}
```