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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// template <class T>
// constexpr T bit_ceil(T x) noexcept;
// Remarks: This function shall not participate in overload resolution unless
// T is an unsigned integer type
#include <bit>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <limits>
class A{};
enum E1 : unsigned char { rEd };
enum class E2 : unsigned char { red };
template <typename T>
constexpr bool toobig()
{
return 0 == std::bit_ceil(std::numeric_limits<T>::max());
}
int main(int, char**)
{
// Make sure we generate a compile-time error for UB
static_assert(toobig<unsigned char>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<unsigned short>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<unsigned>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<unsigned long>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<unsigned long long>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::uint8_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::uint16_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::uint32_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::uint64_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::size_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::uintmax_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
static_assert(toobig<std::uintptr_t>(), ""); // expected-error {{static assertion expression is not an integral constant expression}}
return 0;
}
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