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https://gitlab.com/80486DX2-66/gists
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64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*
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* safe_mem.test.c
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*
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* Author: Intel A80486DX2-66
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* License: Unlicense
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "safe_mem.h"
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#undef SAFE_FREE_ERROR_HOOK
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#define SAFE_FREE_ERROR_HOOK do { \
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fprintf(stderr, "Double freeing detected!\n"); \
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exit(EXIT_FAILURE); \
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} while (0)
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#define PRINT_POINTER(caption, ptr) \
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printf(caption " = %p\n", (void*) ptr);
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#define DUMP_INT_ARRAY(caption, ptr, count) do { \
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printf("%s: [", caption); \
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for (size_t i = 0; i < count; i++) { \
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printf("%d", ptr[i]); \
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if (i != (count - 1)) \
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printf(", "); \
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} \
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printf("]\n"); \
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} while (0)
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int main(void) {
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#define COUNT 4
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int* integers = precise_malloc(COUNT, sizeof(int));
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PRINT_POINTER("int* integers (before freeing)", integers);
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integers[0] = 0;
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integers[1] = EOF;
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integers[2] = 2;
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integers[3] = 1;
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DUMP_INT_ARRAY("int* integers (before secure erasure)", integers, COUNT);
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printf("Secure erasure is "
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#if NO_SECURE_ERASE_WARRANTY
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"not guaranteed!"
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#else
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"guaranteed: %s"
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#endif
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"\n"
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#if !NO_SECURE_ERASE_WARRANTY
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, SECURE_ERASE_WARRANTY
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#endif
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);
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secure_erase(integers, COUNT * sizeof(int));
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DUMP_INT_ARRAY("int* integers (after secure erasure)", integers, COUNT);
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safe_free(integers);
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PRINT_POINTER("int* integers (after freeing)", integers);
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fflush(stdout);
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safe_free(integers);
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PRINT_POINTER("int* integers (after two free() calls)", integers);
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return EXIT_SUCCESS;
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}
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