mz_adler32: 42| 210| { 43| 210| mz_uint32 i, s1 = (mz_uint32)(adler & 0xffff), s2 = (mz_uint32)(adler >> 16); 44| 210| size_t block_len = buf_len % 5552; 45| 210| if (!ptr) ------------------ | Branch (45:13): [True: 105, False: 105] ------------------ 46| 105| return MZ_ADLER32_INIT; ------------------ | | 251| 105|#define MZ_ADLER32_INIT (1) ------------------ 47| 5.65k| while (buf_len) ------------------ | Branch (47:16): [True: 5.54k, False: 105] ------------------ 48| 5.54k| { 49| 3.80M| for (i = 0; i + 7 < block_len; i += 8, ptr += 8) ------------------ | Branch (49:25): [True: 3.79M, False: 5.54k] ------------------ 50| 3.79M| { 51| 3.79M| s1 += ptr[0], s2 += s1; 52| 3.79M| s1 += ptr[1], s2 += s1; 53| 3.79M| s1 += ptr[2], s2 += s1; 54| 3.79M| s1 += ptr[3], s2 += s1; 55| 3.79M| s1 += ptr[4], s2 += s1; 56| 3.79M| s1 += ptr[5], s2 += s1; 57| 3.79M| s1 += ptr[6], s2 += s1; 58| 3.79M| s1 += ptr[7], s2 += s1; 59| 3.79M| } 60| 5.80k| for (; i < block_len; ++i) ------------------ | Branch (60:20): [True: 258, False: 5.54k] ------------------ 61| 258| s1 += *ptr++, s2 += s1; 62| 5.54k| s1 %= 65521U, s2 %= 65521U; 63| 5.54k| buf_len -= block_len; 64| 5.54k| block_len = 5552; 65| 5.54k| } 66| 105| return (s2 << 16) + s1; 67| 210| } mz_crc32: 97| 210|{ 98| 210| static const mz_uint32 s_crc_table[256] = { 99| 210| 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 100| 210| 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 101| 210| 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 102| 210| 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 103| 210| 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 104| 210| 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 105| 210| 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 106| 210| 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 107| 210| 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 108| 210| 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 109| 210| 0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 110| 210| 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 111| 210| 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 112| 210| 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 113| 210| 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 114| 210| 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 115| 210| 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 116| 210| 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 117| 210| 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 118| 210| 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 119| 210| 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2, 0x1E01F268, 120| 210| 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 121| 210| 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 122| 210| 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 123| 210| 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 124| 210| 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 125| 210| 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 126| 210| 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 127| 210| 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 128| 210| 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 129| 210| 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 0x88085AE6, 130| 210| 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 131| 210| 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 132| 210| 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 133| 210| 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 134| 210| 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 135| 210| 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D 136| 210| }; 137| | 138| 210| mz_uint32 crc32 = (mz_uint32)crc ^ 0xFFFFFFFF; 139| 210| const mz_uint8 *pByte_buf = (const mz_uint8 *)ptr; 140| | 141| 7.59M| while (buf_len >= 4) ------------------ | Branch (141:12): [True: 7.59M, False: 210] ------------------ 142| 7.59M| { 143| 7.59M| crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF]; 144| 7.59M| crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[1]) & 0xFF]; 145| 7.59M| crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[2]) & 0xFF]; 146| 7.59M| crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[3]) & 0xFF]; 147| 7.59M| pByte_buf += 4; 148| 7.59M| buf_len -= 4; 149| 7.59M| } 150| | 151| 292| while (buf_len) ------------------ | Branch (151:12): [True: 82, False: 210] ------------------ 152| 82| { 153| 82| crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF]; 154| 82| ++pByte_buf; 155| 82| --buf_len; 156| 82| } 157| | 158| 210| return ~crc32; 159| 210|} checksum_fuzzer.c:crc32: 582| 210| { 583| 210| return mz_crc32(crc, ptr, buf_len); 584| 210| } checksum_fuzzer.c:adler32: 587| 210| { 588| 210| return mz_adler32(adler, ptr, buf_len); 589| 210| } LLVMFuzzerTestOneInput: 14| 105|{ 15| | /* Discard inputs larger than 1Mb. */ 16| 105| if (dataLen < 1 || dataLen > kMaxSize) ------------------ | Branch (16:9): [True: 0, False: 105] | Branch (16:24): [True: 0, False: 105] ------------------ 17| 0| return 0; 18| | 19| 105| uint32_t crc = crc32(0L, NULL, 0); 20| 105| uint32_t adler = adler32(0L, NULL, 0); 21| | 22| 105| crc = crc32(crc, data, (uint32_t)dataLen); 23| 105| adler = adler32(adler, data, (uint32_t)dataLen); 24| | 25| 105| return 0; 26| 105|}