MSVC std::_Container_base12 has wrong data in _Myproxy

zyr 0
Viewed 45

I use ENTT and add the following component to every entity.

template<typename T, typename... Args>
T& AddComponent(Args&&... args)
{
    HZ_CORE_ASSERT(!HasComponent<T>(), "Entity already has component!");
    T& component = m_Scene->m_Registry.emplace<T>(m_EntityHandle, std::forward<Args>(args)...);
    m_Scene->OnComponentAdded<T>(*this, component);
    return component;
}

struct TagComponent
{
    std::string Tag;

    TagComponent() = default;
    TagComponent(const TagComponent& other) : Tag(other.Tag) {};
    TagComponent(const std::string tag) : Tag(tag) {}
};

Sometimes it will throw "access violation exception" when _Container_base12::_Orphan_all() is called during reallocation. I find that the address for the two pointers in std::Container_proxy is weird. _Mycont should have one byte more for the address to make sense. _Myfirstiter should not have the byte 0xfd at the front, it should be a nullptr.

enter image description here

What's the possible reason?

Edit: Failed to solve this bug. It's really weired that if I put a breakpoint and run step by step when I load the node[0]-1 of the mesh, the bug never occur. Otherwise it came up with a possibility of about 20%.

stl c++
1 Answers
MSalters0
Related