為什么在運行Boost代碼時總是收到警告？

Question

我注意到從Boost網站運行代碼示例時，我收到大量警告。 例如，該程序：

#include <cassert>
#include <string>
#include <boost/iostreams/device/back_inserter.hpp>
#include <boost/iostreams/filtering_stream.hpp>

namespace io = boost::iostreams;

int main()
{
    using namespace std;

    string                 result;
    io::filtering_ostream  out(io::back_inserter(result));
    out << "Hello World!";
    out.flush();
    std::cout << result;
}

這些是我得到的警告（我已經抽走了大部分鮮血和膽量）：

warning: declaration of 'close' shadows a member of 'this' [-Wshadow]
warning: declaration of 'ptr' shadows a member of 'this' [-Wshadow]
warning: declaration of 'close' shadows a member of 'this' [-Wshadow]
warning: declaration of 'next' shadows a member of 'this' [-Wshadow]
warning: declaration of 'component_type' shadows a member of 'this' [-Wshadow]
warning: declaration of 'close' shadows a member of 'this' [-Wshadow]
warning: declaration of 'component_type' shadows a member of 'this' [-Wshadow]
warning: declaration of 'next' shadows a member of 'this' [-Wshadow]
warning: declaration of 'close' shadows a member of 'this' [-Wshadow]
warning: declaration of 'next' shadows a member of 'this' [-Wshadow]
warning: declaration of 'close' shadows a member of 'this' [-Wshadow]

為什么會這樣呢？ 安裝Boost時我可能做錯了什么嗎？

Answer 1

可能這意味着編譯器已實施了更嚴格的警告。

如果支持您的編譯器版本/平台，上游通常會為這些編譯器修復代碼。

您通常可以通過執行以下操作來隱藏系統標題的警告

-isystem /path/to/boost

（即代替-I /path/to/boost ）

Answer 2

不只是你 其他人也報告了此問題。 您的代碼雖然很好。