1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03 11 // The test requires access control SFINAE. 12 13 // <unordered_map> 14 15 // Check that std::unordered_multimap fails to instantiate if the comparison predicate is 16 // not copy-constructible. This is LWG issue 2436 17 18 #include <unordered_map> 19 20 template <class T> 21 struct Comp { 22 bool operator () (const T& lhs, const T& rhs) const { return lhs == rhs; } 23 24 Comp () {} 25 private: 26 Comp (const Comp &); // declared but not defined 27 }; 28 29 30 int main() { 31 std::unordered_multimap<int, int, std::hash<int>, Comp<int> > m; 32 } 33
