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/*
* Copyright 2008 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include <sys/types.h>
#include <stdlib.h>
#ifdef UNIT_TESTING
extern void* _test_malloc(const size_t size, const char* file, const int line);
extern void* _test_calloc(const size_t number_of_elements, const size_t size,
const char* file, const int line);
extern void _test_free(void* const ptr, const char* file, const int line);
#define malloc(size) _test_malloc(size, __FILE__, __LINE__)
#define calloc(num, size) _test_calloc(num, size, __FILE__, __LINE__)
#define free(ptr) _test_free(ptr, __FILE__, __LINE__)
#endif // UNIT_TESTING
void leak_memory(void);
void buffer_overflow(void);
void buffer_underflow(void);
void leak_memory(void) {
int * const temporary = (int*)malloc(sizeof(int));
*temporary = 0;
}
void buffer_overflow(void) {
char * const memory = (char*)malloc(sizeof(int));
memory[sizeof(int)] = '!';
free(memory);
}
void buffer_underflow(void) {
char * const memory = (char*)malloc(sizeof(int));
memory[-1] = '!';
free(memory);
}
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