1 // RUN: %clangxx_asan -fexceptions -O %s -o %t && %run %t 2 // 3 // Test __sanitizer_annotate_contiguous_container. 4 5 #include <stdlib.h> 6 #include <stdio.h> 7 #include <string.h> 8 #include <assert.h> 9 #include <sanitizer/asan_interface.h> 10 11 void TestContainer(size_t capacity) { 12 char *beg = new char[capacity]; 13 char *end = beg + capacity; 14 char *mid = beg + capacity; 15 char *old_mid = 0; 16 17 for (int i = 0; i < 10000; i++) { 18 size_t size = rand() % (capacity + 1); 19 assert(size <= capacity); 20 old_mid = mid; 21 mid = beg + size; 22 __sanitizer_annotate_contiguous_container(beg, end, old_mid, mid); 23 24 for (size_t idx = 0; idx < size; idx++) 25 assert(!__asan_address_is_poisoned(beg + idx)); 26 for (size_t idx = size; idx < capacity; idx++) 27 assert(__asan_address_is_poisoned(beg + idx)); 28 assert(__sanitizer_verify_contiguous_container(beg, mid, end)); 29 assert(NULL == 30 __sanitizer_contiguous_container_find_bad_address(beg, mid, end)); 31 if (mid != beg) { 32 assert(!__sanitizer_verify_contiguous_container(beg, mid - 1, end)); 33 assert(mid - 1 == __sanitizer_contiguous_container_find_bad_address( 34 beg, mid - 1, end)); 35 } 36 if (mid != end) { 37 assert(!__sanitizer_verify_contiguous_container(beg, mid + 1, end)); 38 assert(mid == __sanitizer_contiguous_container_find_bad_address( 39 beg, mid + 1, end)); 40 } 41 } 42 43 // Don't forget to unpoison the whole thing before destroing/reallocating. 44 __sanitizer_annotate_contiguous_container(beg, end, mid, end); 45 for (size_t idx = 0; idx < capacity; idx++) 46 assert(!__asan_address_is_poisoned(beg + idx)); 47 delete[] beg; 48 } 49 50 __attribute__((noinline)) 51 void Throw() { throw 1; } 52 53 __attribute__((noinline)) 54 void ThrowAndCatch() { 55 try { 56 Throw(); 57 } catch(...) { 58 } 59 } 60 61 void TestThrow() { 62 char x[32]; 63 __sanitizer_annotate_contiguous_container(x, x + 32, x + 32, x + 14); 64 assert(!__asan_address_is_poisoned(x + 13)); 65 assert(__asan_address_is_poisoned(x + 14)); 66 ThrowAndCatch(); 67 assert(!__asan_address_is_poisoned(x + 13)); 68 // FIXME: invert the assertion below once we fix 69 // https://code.google.com/p/address-sanitizer/issues/detail?id=258 70 // This assertion works only w/o UAR. 71 if (!__asan_get_current_fake_stack()) 72 assert(!__asan_address_is_poisoned(x + 14)); 73 __sanitizer_annotate_contiguous_container(x, x + 32, x + 14, x + 32); 74 assert(!__asan_address_is_poisoned(x + 13)); 75 assert(!__asan_address_is_poisoned(x + 14)); 76 } 77 78 int main(int argc, char **argv) { 79 int n = argc == 1 ? 128 : atoi(argv[1]); 80 for (int i = 0; i <= n; i++) 81 TestContainer(i); 82 TestThrow(); 83 } 84
