nfx-containers 0.6.0
Modern C++20 header-only library providing high-performance hash containers with Robin Hood and perfect hashing
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CompilerSupport.h
1/*
2 * MIT License
3 *
4 * Copyright (c) 2025 nfx
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25#pragma once
26
28#if defined( __clang__ )
29// Clang or Clang-CL: Use feature detection regardless of _MSC_VER
30# if __has_cpp_attribute( no_unique_address )
31# define NFX_CONTAINERS_NO_UNIQUE_ADDRESS [[no_unique_address]]
32# else
33# define NFX_CONTAINERS_NO_UNIQUE_ADDRESS
34# endif
35#elif defined( _MSC_VER ) && _MSC_VER >= 1928
36// MSVC
37# define NFX_CONTAINERS_NO_UNIQUE_ADDRESS [[no_unique_address]]
38#elif defined( __has_cpp_attribute ) && __has_cpp_attribute( no_unique_address ) >= 201803L
39# if defined( __cpp_lib_no_unique_address ) && __cpp_lib_no_unique_address >= 201803L
40# define NFX_CONTAINERS_NO_UNIQUE_ADDRESS [[no_unique_address]]
41# else
42# define NFX_CONTAINERS_NO_UNIQUE_ADDRESS
43# endif
44#else
45# define NFX_CONTAINERS_NO_UNIQUE_ADDRESS
46#endif