類使用std :: ref（）與nvcc時沒有成員「second_argument_type」

Question

我想編譯一個c++文件與nvcc使用cuda 7.5.18和gcc 5.4.0並且運行時出現錯誤。看看下面簡單的例子：

#include <thrust/functional.h> 

struct test_struct { 
    //.. 
} 

void f(test_struct& a) { 
    //.. 
} 

int main() { 
    test_struct a; 
    std::function<void()> bound_f = std::bind(f, std::ref(a)); 
} 

編譯此代碼與nvcc -c -std=c++11 test.cu -o test.o結果在下面的錯誤輸出：

/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/c++/functional(78): error: class "test_struct" has no member "result_type" 
      detected during: 
      instantiation of class "std::_Maybe_get_result_type<_Functor, void> [with _Functor=test_struct]" 
(86): here 
      instantiation of class "std::_Weak_result_type_impl<_Functor> [with _Functor=test_struct]" 
(184): here 
      instantiation of class "std::_Weak_result_type<_Functor> [with _Functor=test_struct]" 
(264): here 
      instantiation of class "std::_Reference_wrapper_base_impl<true, true, _Tp> [with _Tp=test_struct]" 
(283): here 
      instantiation of class "std::_Reference_wrapper_base<_Tp> [with _Tp=test_struct]" 
(399): here 
      instantiation of class "std::reference_wrapper<_Tp> [with _Tp=test_struct]" 
test.cu(14): here 

/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/c++/functional(266): error: class "test_struct" has no member "argument_type" 
      detected during: 
      instantiation of class "std::_Reference_wrapper_base_impl<true, true, _Tp> [with _Tp=test_struct]" 
(283): here 
      instantiation of class "std::_Reference_wrapper_base<_Tp> [with _Tp=test_struct]" 
(399): here 
      instantiation of class "std::reference_wrapper<_Tp> [with _Tp=test_struct]" 
test.cu(14): here 

/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/c++/functional(267): error: class "test_struct" has no member "first_argument_type" 
      detected during: 
      instantiation of class "std::_Reference_wrapper_base_impl<true, true, _Tp> [with _Tp=test_struct]" 
(283): here 
      instantiation of class "std::_Reference_wrapper_base<_Tp> [with _Tp=test_struct]" 
(399): here 
      instantiation of class "std::reference_wrapper<_Tp> [with _Tp=test_struct]" 
test.cu(14): here 

/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/include/c++/functional(268): error: class "test_struct" has no member "second_argument_type" 
      detected during: 
      instantiation of class "std::_Reference_wrapper_base_impl<true, true, _Tp> [with _Tp=test_struct]" 
(283): here 
      instantiation of class "std::_Reference_wrapper_base<_Tp> [with _Tp=test_struct]" 
(399): here 
      instantiation of class "std::reference_wrapper<_Tp> [with _Tp=test_struct]" 
test.cu(14): here 

5 errors detected in the compilation of "/tmp/tmpxft_00003b29_00000000-7_test.cpp1.ii". 

我無法找到任何與NVCC線error: ... has no member "second_argument_type"相關等等，所以我我完全無能爲力。顯然，std::function的班級成員找不到（請參閱here）。

我能做些什麼來解決這個問題？

Answer 1

錯誤的原因尚不清楚，但你可以很容易的工作與周圍的λ：

std::function<void()> bound_f = [&a](){ return f(a); };