llvm-project/libcxx/test/std/utilities/function.objects/unord.hash/enum.fail.cpp

25 lines
568 B
C++

//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <functional>
// Hashing a struct w/o a defined hash should fail.
#include <functional>
#include <cassert>
#include <type_traits>
struct X {};
int main()
{
X x;
size_t h = std::hash<X>{} ( x );
}