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
leak_memory()29 void leak_memory() {
30 int * const temporary = (int*)malloc(sizeof(int));
31 *temporary = 0;
32 }
33
buffer_overflow()34 void buffer_overflow() {
35 char * const memory = (char*)malloc(sizeof(int));
36 memory[sizeof(int)] = '!';
37 free(memory);
38 }
39
buffer_underflow()40 void buffer_underflow() {
41 char * const memory = (char*)malloc(sizeof(int));
42 memory[-1] = '!';
43 free(memory);
44 }
45