102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
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#include <stdio.h>
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int print_hash_value = 1;
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static void platform_main_begin(void)
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{
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}
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static unsigned crc32_tab[256];
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static unsigned crc32_context = 0xFFFFFFFFUL;
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static void
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crc32_gentab (void)
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{
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unsigned crc;
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unsigned poly = 0xEDB88320UL;
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int i, j;
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for (i = 0; i < 256; i++) {
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crc = i;
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for (j = 8; j > 0; j--) {
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if (crc & 1) {
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crc = (crc >> 1) ^ poly;
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} else {
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crc >>= 1;
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}
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}
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crc32_tab[i] = crc;
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}
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}
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static void
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crc32_byte (unsigned char b) {
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crc32_context =
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((crc32_context >> 8) & 0x00FFFFFF) ^
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crc32_tab[(crc32_context ^ b) & 0xFF];
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}
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extern int strcmp ( char *, char *);
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static void
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crc32_8bytes (unsigned val)
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{
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crc32_byte ((val>>0) & 0xff);
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crc32_byte ((val>>8) & 0xff);
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crc32_byte ((val>>16) & 0xff);
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crc32_byte ((val>>24) & 0xff);
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}
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static void
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transparent_crc (unsigned val, char* vname, int flag)
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{
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crc32_8bytes(val);
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if (flag) {
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printf("...checksum after hashing %s : %X\n", vname, crc32_context ^ 0xFFFFFFFFU);
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}
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}
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static void
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platform_main_end (int x, int flag)
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{
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if (!flag) printf ("checksum = %x\n", x);
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}
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static long __undefined;
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void csmith_compute_hash(void);
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void step_hash(int stmt_id);
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static int g_4[8][4] = {{0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}, {0x1D925B0EL, 0xBA07E4FCL, (-1L), 0x2887CF2EL}};
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static signed char func_1(void);
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static signed char func_1(void)
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{
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signed char l_2 = (-4L);
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int *l_3 = &g_4[5][0];
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step_hash(1);
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(*l_3) = l_2;
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step_hash(2);
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return g_4[5][0];
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}
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void csmith_compute_hash(void)
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{
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int i, j;
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for (i = 0; i < 8; i++)
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{
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for (j = 0; j < 4; j++)
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{
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transparent_crc(g_4[i][j], "g_4[i][j]", print_hash_value);
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if (print_hash_value) printf("index = [%d][%d]\n", i, j);
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}
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}
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}
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void step_hash(int stmt_id)
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{
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int i = 0;
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csmith_compute_hash();
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printf("before stmt(%d): checksum = %X\n", stmt_id, crc32_context ^ 0xFFFFFFFFUL);
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crc32_context = 0xFFFFFFFFUL;
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for (i = 0; i < 256; i++) {
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crc32_tab[i] = 0;
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}
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crc32_gentab();
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}
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int main (void)
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{
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int i, j;
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int print_hash_value = 0;
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platform_main_begin();
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crc32_gentab();
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func_1();
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csmith_compute_hash();
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platform_main_end(crc32_context ^ 0xFFFFFFFFUL, print_hash_value);
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return 0;
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}
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