1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28/* BCOMPILER() - the compiler being used to build the project */
29#define BCOMPILER(BFEATURE) (defined BCOMPILER_##BFEATURE && BCOMPILER_##BFEATURE)
30
31/* BCOMPILER_HAS_CLANG_FEATURE() - whether the compiler supports a particular language or library feature. */
32/* http://clang.llvm.org/docs/LanguageExtensions.html#has-feature-and-has-extension */
33#ifdef __has_feature
34#define BCOMPILER_HAS_CLANG_FEATURE(x) __has_feature(x)
35#else
36#define BCOMPILER_HAS_CLANG_FEATURE(x) 0
37#endif
38
39#define BASAN_ENABLED BCOMPILER_HAS_CLANG_FEATURE(address_sanitizer)
40
41/* BCOMPILER(GCC_COMPATIBLE) - GNU Compiler Collection or compatibles */
42
43#if defined(__GNUC__)
44#define BCOMPILER_GCC_COMPATIBLE 1
45#endif
46
47/* BNO_RETURN */
48
49#if !defined(BNO_RETURN) && BCOMPILER(GCC_COMPATIBLE)
50#define BNO_RETURN __attribute((__noreturn__))
51#endif
52
53#if !defined(BNO_RETURN)
54#define BNO_RETURN
55#endif
56
57/* BFALLTHROUGH */
58
59#if !defined(BFALLTHROUGH) && defined(__cplusplus) && defined(__has_cpp_attribute)
60
61#if __has_cpp_attribute(fallthrough)
62#define BFALLTHROUGH [[fallthrough]]
63#elif __has_cpp_attribute(clang::fallthrough)
64#define BFALLTHROUGH [[clang::fallthrough]]
65#elif __has_cpp_attribute(gnu::fallthrough)
66#define BFALLTHROUGH [[gnu::fallthrough]]
67#endif
68
69#endif // !defined(BFALLTHROUGH) && defined(__cplusplus) && defined(__has_cpp_attribute)
70
71#if !defined(BFALLTHROUGH)
72#define BFALLTHROUGH
73#endif
74