| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| |
| // #include <memory> |
| |
| // template<size_t N, class T> |
| // [[nodiscard]] constexpr T* assume_aligned(T* ptr); |
| |
| // This test checks that we static_assert inside std::assume_aligned<N>(p) |
| // when N is not a power of two. However, Clang will already emit an error |
| // in its own __builtin_assume_aligned, so we ignore that additional error |
| // for the purpose of this test. We also ignore the additional warning about |
| // remainder by 0 being undefined. |
| // ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error -Xclang -verify-ignore-unexpected=warning |
| |
| #include <memory> |
| |
| void f() { |
| int *p = nullptr; |
| (void)std::assume_aligned<0>(p); // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}} |
| (void)std::assume_aligned<3>(p); // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}} |
| (void)std::assume_aligned<5>(p); // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}} |
| (void)std::assume_aligned<33>(p); // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}} |
| } |
