target_type.pass.cpp [plain text]
#include <functional>
#include <typeinfo>
#include <cassert>
class A
{
int data_[10];
public:
static int count;
A()
{
++count;
for (int i = 0; i < 10; ++i)
data_[i] = i;
}
A(const A&) {++count;}
~A() {--count;}
int operator()(int i) const
{
for (int j = 0; j < 10; ++j)
i += data_[j];
return i;
}
int foo(int) const {return 1;}
};
int A::count = 0;
int g(int) {return 0;}
int main()
{
{
std::function<int(int)> f = A();
assert(f.target_type() == typeid(A));
}
{
std::function<int(int)> f;
assert(f.target_type() == typeid(void));
}
}