我使用gcc版本4.8.1,g ++版本4.6.4,使用标志:-std = c ++ 0x和-pthread。
我将问题简化为所示的代码,仍然会得到原始错误。
下面的代码可以编译,但是当我取消注释线程“two”的两行时,我会收到下面代码中显示的错误消息。
#include <iostream>
#include <thread>
using namespace std;
void print_int(int x=7);
void print_A(){
cout << "A\n";
}
int main(){
thread one (print_int,17);
//thread two (print_int);
thread three (print_A);
one.join();
//two.join();
three.join();
return 0;
}
void print_int(int x){
cout << x << '\n';
}
我尝试解析错误消息,但仍然不知道发生了什么...
In file included from /usr/include/c++/4.6/thread:39:0,
from def_params.cpp:2:
/usr/include/c++/4.6/functional: In member function ‘void std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args ...>&&, std::_Index_tuple<_Indexes ...>, typename std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res>::type) [with _Res = void, _Args = {}, int ..._Indexes = {}, _Result = void, _Functor = void (*)(int), _Bound_args = {}, typename std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res>::type = int]’:
/usr/include/c++/4.6/functional:1378:24: instantiated from ‘std::_Bind_result<_Result, _Functor(_Bound_args ...)>::result_type std::_Bind_result<_Result, _Functor(_Bound_args ...)>::operator()(_Args&& ...) [with _Args = {}, _Result = void, _Functor = void (*)(int), _Bound_args = {}, std::_Bind_result<_Result, _Functor(_Bound_args ...)>::result_type = void]’
/usr/include/c++/4.6/thread:117:13: instantiated from ‘void std::thread::_Impl<_Callable>::_M_run() [with _Callable = std::_Bind_result<void, void (*())(int)>]’
def_params.cpp:26:9: instantiated from here
/usr/include/c++/4.6/functional:1287:4: error: too few arguments to function
任何建议或解决方案?提前感谢!