为什么我在运行Boost代码时总是收到警告？

Question

我注意到当我从Boost网站运行代码示例时，我收到了很多警告。例如，这个程序：

#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; 
} 

这些都是我得到的警告（我已经采取了大部分的血液和内脏的）：

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] 

这究竟是为什么？在安装Boost时，我可能做错了什么？

Answer 1

这不仅仅是你。其他人也有reported这个问题。你的代码虽然很好。

Answer 2

这可能意味着编译器执行了更严格的警告。

如果您的编译器版本/平台受支持，上游将（通常）修复这些编译器的代码。

通常可以隐藏系统标题的警告。

-isystem /path/to/boost 

（即的，而不是-I /path/to/boost）