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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 comparison predicate is
// not copy-constructible. This is LWG issue 2436
#include <unordered_map>
template <class T>
struct Comp {
bool operator () (const T& lhs, const T& rhs) const { return lhs == rhs; }
Comp () {}
private:
Comp (const Comp &); // declared but not defined
};
int main() {
std::unordered_map<int, int, std::hash<int>, Comp<int> > m;
}
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