Heather Lee Wilson | bdd62c5 | 2013-12-28 15:12:39 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2008 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | #include <stdlib.h> |
| 17 | |
| 18 | #if UNIT_TESTING |
| 19 | extern void* _test_malloc(const size_t size, const char* file, const int line); |
| 20 | extern void* _test_calloc(const size_t number_of_elements, const size_t size, |
| 21 | const char* file, const int line); |
| 22 | extern void _test_free(void* const ptr, const char* file, const int line); |
| 23 | |
| 24 | #define malloc(size) _test_malloc(size, __FILE__, __LINE__) |
| 25 | #define calloc(num, size) _test_calloc(num, size, __FILE__, __LINE__) |
| 26 | #define free(ptr) _test_free(ptr, __FILE__, __LINE__) |
| 27 | #endif // UNIT_TESTING |
| 28 | |
| 29 | void leak_memory() { |
| 30 | int * const temporary = (int*)malloc(sizeof(int)); |
| 31 | *temporary = 0; |
| 32 | } |
| 33 | |
| 34 | void buffer_overflow() { |
| 35 | char * const memory = (char*)malloc(sizeof(int)); |
| 36 | memory[sizeof(int)] = '!'; |
| 37 | free(memory); |
| 38 | } |
| 39 | |
| 40 | void buffer_underflow() { |
| 41 | char * const memory = (char*)malloc(sizeof(int)); |
| 42 | memory[-1] = '!'; |
| 43 | free(memory); |
| 44 | } |