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libcxx_old/test/std/containers/unord/unord.set/incomplete.pass.cpp

42 lines
963 B
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <unordered_set>
// Check that std::unordered_set and its iterators can be instantiated with an incomplete
// type.
#include <unordered_set>
#include "test_macros.h"
template <class Tp>
struct MyHash {
MyHash() {}
std::size_t operator()(Tp const&) const {return 42;}
};
struct A {
typedef std::unordered_set<A, MyHash<A> > Map;
Map m;
Map::iterator it;
Map::const_iterator cit;
Map::local_iterator lit;
Map::const_local_iterator clit;
};
inline bool operator==(A const& L, A const& R) { return &L == &R; }
int main(int, char**) {
A a;
return 0;
}