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