cuda - compile error occured in thrust/type_traits.h -

i try add trust::sort in cuda code, nvcc tell me that:

type_traits.h(322): error c2660: 'test' : function not take 1 arguments type_traits.h(322): error c2866:'thrust::detail::tt_detail::is_convertible_sfinae<from,to>::value' : const static data member of managed type must initialized @ point of declaration  type_traits.h(355): error c2057: expected constant expressiontype_traits.h(363): error c2975: '__v' : invalid template argument 'thrust::detail::integral_constant', expected compile-time constant expression type_traits.h(363): error c2975: '__v' : invalid template argument 'thrust::detail::integral_constant', expected compile-time constant expression 

i have search there seems no 1 same problem me

the part of code thrust:

#include <thrust\sort.h>  struct prepare_struct  { float xp; float yp; float zp; float xs; float ys; float zs; float sep; int idsrc_ideve; };  int compare_sort(prepare_struct &a, prepare_struct &b){ return a.sep > b.sep;}  void func(...){ ...  prepare_struct* spos_d; checkcudaerrors( cudamalloc((void**)&spos_d, n*sizeof(prepare_struct) ) );  //a kernel fill spos_d  thrust::sort(spos_d, spos_d + n, compare_sort);  ... } 

if remove thrust::sort(), compiled without error

i've tried thrust::device_vector, same error

and raw_pointer_cast() same error message too

is bug inside thrust or nvcc?

or wrong in code?

environment:

win7 x64 vs 2010 cuda 5.0 sm_20

the device_vector version:

#include <thrust/device_vector.h> void func(...){ ...  thrust::device_vector<prepare_struct> spos_dv(n_src_sta); prepare_struct* spos_d = thrust::raw_pointer_cast(spos_dv.data());  //a kernel fill spos_d  thrust::sort(spos_dv.begin(),spos_dv.end(),compare_sort);  ... } 

when writing post on stack overflow, make sure provide short, self contained, correct (compilable), example (aka sscce). make life easier other members trying you, , find actual error in code. if code not compilable, provide example demonstrates compilation issue.

as program, there must things not telling us. trying achieve handled thrust without error. here modified (and completed) version of program:

#include <thrust/sort.h> #include <thrust/device_vector.h> #include <thrust/host_vector.h>  struct prepare_struct {   float xp;   float yp;   float zp;   float xs;   float ys;   float zs;   float sep;   int idsrc_ideve; };  struct prepare_struct_compare {   __host__ __device__   bool operator() (const prepare_struct& a, const prepare_struct& b)   {     return a.sep < b.sep;   } };  void initialize(thrust::host_vector<prepare_struct>& v) {   for(size_t = 0; < v.size(); i++)     v[i].sep = v.size() - i; }  void print(const thrust::host_vector<prepare_struct>& v) {   for(size_t = 0; < v.size(); i++)     std::cout << " " << v[i].sep;   std::cout << "\n"; }  int main () {   const int n = 10;    // initialize vector of prepare_struct on host   thrust::host_vector<prepare_struct> vec_h(n);   initialize(vec_h);   std::cout << "initial vector:" << std::endl;   print(vec_h);    // copy vector device   thrust::device_vector<prepare_struct> vec_d = vec_h;    // sort on device   thrust::sort (vec_d.begin(), vec_d.end(), prepare_struct_compare());    // copy result host   thrust::host_vector<prepare_struct> res_h = vec_d;   std::cout << "final vector:" << std::endl;   print(res_h); } 

running program gives us:

initial vector:  10 9 8 7 6 5 4 3 2 1 final vector:  1 2 3 4 5 6 7 8 9 10