lib/yamlcpp/include/yaml-cpp/anchor.h

#ifndef ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

#if defined(_MSC_VER) ||                                            \
    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif

#include <cstddef>

namespace YAML {
using anchor_t = std::size_t;
const anchor_t NullAnchor = 0;
}

#endif  // ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66