test/std/containers/unord/unord.map/unord.map.elem/index_tuple.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <unordered_map>

// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
//           class Alloc = allocator<pair<const Key, T>>>
// class unordered_map

// mapped_type& operator[](const key_type& k);

// http://llvm.org/bugs/show_bug.cgi?id=16542

#include <unordered_map>

#ifndef _LIBCPP_HAS_NO_VARIADICS

#include <tuple>

using namespace std;

struct my_hash
{
    size_t operator()(const tuple<int,int>&) const {return 0;}
};

#endif

int main()
{
#ifndef _LIBCPP_HAS_NO_VARIADICS
    unordered_map<tuple<int,int>, size_t, my_hash> m;
    m[make_tuple(2,3)]=7;
#endif
}