1//===-- sanitizer_test_utils.h ----------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of *Sanitizer runtime. 11// Common unit tests utilities. 12// 13//===----------------------------------------------------------------------===// 14 15#ifndef SANITIZER_TEST_UTILS_H 16#define SANITIZER_TEST_UTILS_H 17 18#if defined(_WIN32) 19// <windows.h> should always be the first include on Windows. 20# include <windows.h> 21// MSVS headers define max/min as macros, so std::max/min gets crazy. 22# undef max 23# undef min 24#endif 25 26#if !defined(SANITIZER_EXTERNAL_TEST_CONFIG) 27# define INCLUDED_FROM_SANITIZER_TEST_UTILS_H 28# include "sanitizer_test_config.h" 29# undef INCLUDED_FROM_SANITIZER_TEST_UTILS_H 30#endif 31 32#include <stdint.h> 33 34#if defined(_MSC_VER) 35# define NOINLINE __declspec(noinline) 36#else // defined(_MSC_VER) 37# define NOINLINE __attribute__((noinline)) 38#endif // defined(_MSC_VER) 39 40#if !defined(_MSC_VER) || defined(__clang__) 41# define UNUSED __attribute__((unused)) 42# define USED __attribute__((used)) 43#else 44# define UNUSED 45# define USED 46#endif 47 48#if !defined(__has_feature) 49#define __has_feature(x) 0 50#endif 51 52#ifndef ATTRIBUTE_NO_SANITIZE_ADDRESS 53# if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__) 54# define ATTRIBUTE_NO_SANITIZE_ADDRESS \ 55 __attribute__((no_sanitize_address)) 56# else 57# define ATTRIBUTE_NO_SANITIZE_ADDRESS 58# endif 59#endif // ATTRIBUTE_NO_SANITIZE_ADDRESS 60 61#if __LP64__ || defined(_WIN64) 62# define SANITIZER_WORDSIZE 64 63#else 64# define SANITIZER_WORDSIZE 32 65#endif 66 67// Make the compiler thinks that something is going on there. 68inline void break_optimization(void *arg) { 69#if !defined(_WIN32) || defined(__clang__) 70 __asm__ __volatile__("" : : "r" (arg) : "memory"); 71#endif 72} 73 74// This function returns its parameter but in such a way that compiler 75// can not prove it. 76template<class T> 77NOINLINE 78static T Ident(T t) { 79 T ret = t; 80 break_optimization(&ret); 81 return ret; 82} 83 84// Simple stand-alone pseudorandom number generator. 85// Current algorithm is ANSI C linear congruential PRNG. 86static inline uint32_t my_rand_r(uint32_t* state) { 87 return (*state = *state * 1103515245 + 12345) >> 16; 88} 89 90static uint32_t global_seed = 0; 91 92static inline uint32_t my_rand() { 93 return my_rand_r(&global_seed); 94} 95 96// Set availability of platform-specific functions. 97 98#if !defined(__APPLE__) && !defined(ANDROID) && !defined(__ANDROID__) && !defined(_WIN32) 99# define SANITIZER_TEST_HAS_POSIX_MEMALIGN 1 100#else 101# define SANITIZER_TEST_HAS_POSIX_MEMALIGN 0 102#endif 103 104#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(ANDROID) && \ 105 !defined(__ANDROID__) && !defined(_WIN32) 106# define SANITIZER_TEST_HAS_MEMALIGN 1 107# define SANITIZER_TEST_HAS_PVALLOC 1 108# define SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 1 109#else 110# define SANITIZER_TEST_HAS_MEMALIGN 0 111# define SANITIZER_TEST_HAS_PVALLOC 0 112# define SANITIZER_TEST_HAS_MALLOC_USABLE_SIZE 0 113#endif 114 115#if !defined(__APPLE__) 116# define SANITIZER_TEST_HAS_STRNLEN 1 117#else 118# define SANITIZER_TEST_HAS_STRNLEN 0 119#endif 120 121#endif // SANITIZER_TEST_UTILS_H 122