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Simple code leaks. While comment out a little code of poppler, no leak any more.

The code leak on Windows

#define WXUSINGDLL
#include <wx/log.h> // this leads to memory leak, if comment out this line, no memory leak will
#include <poppler/cpp/poppler-page.h>

int main()
{
    poppler::page * __page = nullptr;
    if (__page != nullptr)
        delete __page;
    return 0;
}

When comment out the 2 parts of class page as below, no leak. And uncomment any will lead to memory leak

class POPPLER_CPP_EXPORT page// : public poppler::noncopyable
{
public:
...
//    ~page();
...
}

class POPPLER_CPP_EXPORT noncopyable
{
public:
    noncopyable(const noncopyable &) = delete;
    const noncopyable &operator=(const noncopyable &) = delete;

protected:
    noncopyable();
    ~noncopyable();
};

The other way, comment out #define WXUSINGDLL also leads to no leak.