// { dg-do run } #define INC_FUNCTIONAL 1 #define USE_STATIC_CAST 1 #include <vector> #include <numeric> #ifdef INC_FUNCTIONAL #include <functional> #endif using namespace std; template<class R> int p( int val, R& r ) { return val + r; } template<class R> void f( vector<R>& v ) { #ifdef USE_STATIC_CAST accumulate( v.begin(), v.end(), 0, static_cast<int (*)(int, R&)>(p) ); #else accumulate( v.begin(), v.end(), 0, p<R> ); #endif } int main() { vector<int> r; f( r ); }