gcc/testsuite/g++.dg/asan/sanitizer_test_utils.h

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