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 to the right 23 24 // CHECK_1_BYTES: ERROR: AddressSanitizer: global-buffer-overflow on address [[ADDR:.*]] at 25 // CHECK_1_BYTES: [[ADDR]] is located 1 bytes to the right 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 } 65