b82dcb624e
I made sure they all had some expected-error output in them. Many of these tests would be better implemented as a positive test using SFINAE, but this is beyond the scope of this patch. Differential Revision: https://reviews.llvm.org/D153980
52 lines
2.9 KiB
C++
52 lines
2.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// template <class T>
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// constexpr T bit_ceil(T x) noexcept;
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// Remarks: This function shall not participate in overload resolution unless
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// T is an unsigned integer type
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#include <bit>
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <limits>
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class A{};
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enum E1 : unsigned char { rEd };
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enum class E2 : unsigned char { red };
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template <typename T>
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constexpr bool toobig()
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{
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return 0 == std::bit_ceil(std::numeric_limits<T>::max());
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}
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int main(int, char**)
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{
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// Make sure we generate a compile-time error for UB
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static_assert(toobig<unsigned char>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<unsigned short>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<unsigned>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<unsigned long>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<unsigned long long>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::uint8_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::uint16_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::uint32_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::uint64_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::size_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::uintmax_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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static_assert(toobig<std::uintptr_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
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return 0;
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}
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