Function addr2line

include/boost/stacktrace/detail/addr2line_impls.hpp:116–160

};

inline std::string addr2line(const char* flag, const void* addr) {
    std::string res;

    boost::stacktrace::detail::location_from_symbol loc(addr);
    // For programs started through $PATH loc.name() is not absolute and
    // addr2line will fail.
    if (!loc.empty() && std::strchr(loc.name(), '/') != nullptr) {
        res = loc.name();
    } else {
        res.resize(16);
        ssize_t rlin_size = ::readlink("/proc/self/exe", &res[0], res.size() - 1);
        while (rlin_size == static_cast<ssize_t>(res.size() - 1)) {
            res.resize(res.size() * 4);
            rlin_size = ::readlink("/proc/self/exe", &res[0], res.size() - 1);
        }
        if (rlin_size == -1) {
            res.clear();
            return res;
        }
        res.resize(static_cast<std::size_t>(rlin_size));
    }

    addr2line_pipe p(flag, res.c_str(), to_hex_array(addr).data());
    res.clear();

    if (!p) {
        return res;
    }

    char data[32];
    while (!::feof(p)) {
        if (::fgets(data, sizeof(data), p)) {
            res += data;
        } else {
            break;
        }
    }

    // Trimming
    while (!res.empty() && (res[res.size() - 1] == '\n' || res[res.size() - 1] == '\r')) {
        res.erase(res.size() - 1);
    }

    return res;
}

inline std::string source_location(const void* addr, bool position_independent) {
    uintptr_t addr_base = 0;