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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// The test requires access control SFINAE.
// <unordered_map>
// Check that std::unordered_map fails to instantiate if the hash function is
// not copy-constructible. This is mentioned in LWG issue 2436
#include <unordered_map>
template <class T>
struct Hash {
std::size_t operator () (const T& lhs) const { return 0; }
Hash () {}
private:
Hash (const Hash &); // declared but not defined
};
int main() {
std::unordered_map<int, int, Hash<int> > m;
}
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