[Bug c++/82560] [7/8 Regression] Temporary object created as a default argument not destructed

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82560

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Further reduced:

extern "C" int printf(const char*, ...);

struct Foo {
  Foo(const char *) {
    printf("%p\tFoo(const char*)\n", this);
  }
  ~Foo() {
    printf("%p\t~Foo()\n", this);
  }
};

struct Bar {
  Bar(Foo foo = "") { }
  ~Bar() { }
};

int main()
{
  delete new Bar();
}