compiler-rt/test/asan/TestCases/load_and_store_n.cpp

   1 // RUN: %clangxx_asan -O2 -fsanitize-address-outline-instrumentation %s -o %t
   2 // RUN: not %run %t A 2>&1 | FileCheck %s --check-prefix=CHECK_0_BYTES
   3 // RUN: not %run %t B 2>&1 | FileCheck %s --check-prefix=CHECK_0_BYTES
   4 // RUN: not %run %t C 2>&1 | FileCheck %s --check-prefix=CHECK_1_BYTES
   5 // RUN: not %run %t D 2>&1 | FileCheck %s --check-prefix=CHECK_1_BYTES
   6
   7 // RUN: %clangxx_asan -O2 -fsanitize-address-outline-instrumentation %s -o %t \
   8 // RUN:   -mllvm -asan-recover=1
   9 // RUN: not %run %t A 2>&1 | FileCheck %s --check-prefix=CHECK_0_BYTES
  10 // RUN: not %run %t B 2>&1 | FileCheck %s --check-prefix=CHECK_0_BYTES
  11 // RUN: not %run %t C 2>&1 | FileCheck %s --check-prefix=CHECK_1_BYTES
  12 // RUN: not %run %t D 2>&1 | FileCheck %s --check-prefix=CHECK_1_BYTES
  13
  14 // RUN: %clangxx_asan -O2 -fsanitize-address-outline-instrumentation %s -o %t \
  15 // RUN:   -mllvm -asan-force-experiment=42
  16 // RUN: not %run %t A 2>&1 | FileCheck %s --check-prefix=CHECK_0_BYTES
  17 // RUN: not %run %t B 2>&1 | FileCheck %s --check-prefix=CHECK_0_BYTES
  18 // RUN: not %run %t C 2>&1 | FileCheck %s --check-prefix=CHECK_1_BYTES
  19 // RUN: not %run %t D 2>&1 | FileCheck %s --check-prefix=CHECK_1_BYTES
  20
  21 // CHECK_0_BYTES: ERROR: AddressSanitizer: global-buffer-overflow on address [[ADDR:.*]] at
  22 // CHECK_0_BYTES: [[ADDR]] is located 0 bytes after
  23
  24 // CHECK_1_BYTES: ERROR: AddressSanitizer: global-buffer-overflow on address [[ADDR:.*]] at
  25 // CHECK_1_BYTES: [[ADDR]] is located 1 bytes after
  26
  27 #include <sanitizer/asan_interface.h>
  28
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 static int64_t mem = -1;
  33 static int64_t *volatile G = &mem;
  34
  35 inline uint16_t UNALIGNED_LOAD(const void *p) {
  36   uint16_t data;
  37   memcpy(&data, p, sizeof data);
  38   return data;
  39 }
  40
  41 inline void UNALIGNED_STORE(uint16_t data, void *p) {
  42   memcpy(p, &data, sizeof data);
  43 }
  44
  45 int main(int argc, char **argv) {
  46   if (argc != 2)
  47     return 1;
  48   int res = 1;
  49   switch (argv[1][0]) {
  50   case 'A':
  51     res = UNALIGNED_LOAD(reinterpret_cast<char *>(G) + 7);
  52     break;
  53   case 'B':
  54     UNALIGNED_STORE(0, reinterpret_cast<char *>(G) + 7);
  55     break;
  56   case 'C':
  57     res = UNALIGNED_LOAD(reinterpret_cast<char *>(G) + 9);
  58     break;
  59   case 'D':
  60     UNALIGNED_STORE(0, reinterpret_cast<char *>(G) + 9);
  61     break;
  62   }
  63   return res;
  64 }