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From: "ldalessandro at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/97790] constexpr evaluation reports false positive memory
 leak
Date: Tue, 10 Nov 2020 21:31:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97790

--- Comment #1 from Luke Dalessandro <ldalessandro at gmail dot com> ---
It is possible to workaround this bug by creating a symbol for the offending
allocation in the IILE.=20

https://godbolt.org/z/jeoEra


```
struct vector {
    int *data;
    int n;
    constexpr vector() : data(new int[1]{}), n(1) {}
    constexpr ~vector() { delete [] data; }
};

struct Foo {
    constexpr auto foo() const {
        return vector();
    }
};

template <auto& f>
constexpr static auto bar() {
    [] {=20
        auto temp =3D f.foo(); // <-- **** GIVE THIS A NAME
        return temp.n;=20
    }();
    return true;
}

constexpr Foo foo;
constexpr auto dd =3D bar<foo>();
```=