//===----------------------------------------------------------------------===// // // 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, c++11, c++14, c++17 // template <class T> // constexpr T ceil2(T x) noexcept; // Remarks: This function shall not participate in overload resolution unless // T is an unsigned integer type #include <bit> #include <cstdint> #include <limits> #include <cassert> #include "test_macros.h" class A{}; enum E1 : unsigned char { rEd }; enum class E2 : unsigned char { red }; template <typename T> constexpr bool toobig() { return 0 == std::ceil2(std::numeric_limits<T>::max()); } int main() { // Make sure we generate a compile-time error for UB static_assert(toobig<unsigned char>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<unsigned short>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<unsigned>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<unsigned long>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<unsigned long long>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<uint8_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<uint16_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<uint32_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<uint64_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<size_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<uintmax_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} static_assert(toobig<uintptr_t>(), ""); // expected-error {{static_assert expression is not an integral constant expression}} }