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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/101442] [9/10/11/12 Regression] Destructor not called for a
 temporary object,
 if it's bound to a ref member of an object subject to NRVO
Date: Wed, 14 Jul 2021 09:45:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101442

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:

bool destroyed =3D false;

struct A
{
    A() {}
    A(const A &) =3D delete;
    A &operator=3D(const A &) =3D delete;
    ~A() {destroyed =3D true;}
};

struct B
{
    const A &a;
    struct string {
     string(const char*) { }
    ~string() { }
    } s;
};

B foo()
{
    B ret{ A{}, "" };
    return ret;
}

int main()
{
  {
    B b =3D foo();
  }
  if (!destroyed)
    __builtin_abort();
}=