1 // RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair 2 3 // RUN: %env_asan_opts=detect_invalid_pointer_pairs=2:halt_on_error=0 %run %t 2>&1 | FileCheck %s 4 5 #include <assert.h> 6 #include <stdlib.h> 7 8 int foo(char *p, char *q) { 9 return p - q; 10 } 11 12 char global1[100] = {}, global2[100] = {}; 13 14 int main() { 15 // Heap allocated memory. 16 char *heap1 = (char *)malloc(42); 17 char *heap2 = (char *)malloc(42); 18 19 // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair 20 // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-subtract-errors.cpp:[[@LINE+1]] 21 foo(heap1, heap2); 22 23 // Global variables. 24 // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair 25 // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-subtract-errors.cpp:[[@LINE+1]] 26 foo(&global1[0], &global2[10]); 27 28 // Stack variables. 29 char stack1, stack2; 30 // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair 31 // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-subtract-errors.cpp:[[@LINE+1]] 32 foo(&stack1, &stack2); 33 34 // Mixtures. 35 // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair 36 // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-subtract-errors.cpp:[[@LINE+1]] 37 foo(heap1, &stack1); 38 // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair 39 // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-subtract-errors.cpp:[[@LINE+1]] 40 foo(heap1, &global1[0]); 41 // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair 42 // CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-subtract-errors.cpp:[[@LINE+1]] 43 foo(&stack1, &global1[0]); 44 45 free(heap1); 46 free(heap2); 47 return 0; 48 } 49