[Bug c++/98665] lvalue ref lifetime extension missing for via sub-object of temporary expression

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98665

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Not a bug. This is equivalent to:

struct X { int i; };

X f() { return { 0 }; }

const int& g(const X& x) { return x.i; }

int main()
{
  const auto& i = g(f());
}

The temporary's lifetime is not extended, because the reference doesn't bind
directly to it.