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From: "ldalessandro at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/100495] constexpr virtual destructor incorrectly reports
 memory leak
Date: Sun, 09 May 2021 20:28:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100495

--- Comment #1 from Luke Dalessandro <ldalessandro at gmail dot com> ---
A short-term workaround for this appears to be explicit allocator usage (wo=
rks
back at least to 10.2).

```
#include <memory>

struct Foo {
    constexpr virtual ~Foo() {}
};

constexpr bool foo() {
    std::allocator<Foo> alloc =3D {};

    Foo *ptr =3D alloc.allocate(1);
    std::construct_at(ptr);
    std::destroy_at(ptr);
    alloc.deallocate(ptr, 1);
    return true;
}

static_assert(foo());
```

https://godbolt.org/z/ohKE6h3Px=