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  for (trycount = 0; trycount < 30000; trycount++) {
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  for (trycount = 0; trycount < 30000; trycount++) {
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    size_t bytesprocessed = 0;
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    size_t bytesprocessed = 0;
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    size_t file_decoded_len = 0;
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    size_t file_decoded_len = 0;
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    int maxchunksz;
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    int maxchunksz;
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    struct unchunk_state unchstate = {0};
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    /* segment file into chunks of random size */
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    /* segment file into chunks of random size */
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    maxchunksz = (rand() % 256) + 8;
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    maxchunksz = (rand() % 256) + 8;
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    file_chunked_len = randchunkdata(file_chunked, file_raw, file_raw_len, maxchunksz);
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    file_chunked_len = randchunkdata(file_chunked, file_raw, file_raw_len, maxchunksz);
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      if (bytes > file_chunked_len - bytesprocessed) bytes = file_chunked_len - bytesprocessed;
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      if (bytes > file_chunked_len - bytesprocessed) bytes = file_chunked_len - bytesprocessed;
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      printf("processing %4zu bytes of chunked data", bytes);
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      printf("processing %4zu bytes of chunked data", bytes);
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      memcpy(buffer, file_chunked + bytesprocessed, bytes);
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      memcpy(buffer, file_chunked + bytesprocessed, bytes);
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      /* decode the chunked version reading random amounts of data and build a decoded version */
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      /* decode the chunked version reading random amounts of data and build a decoded version */
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      decodedbytes = unchunk(buffer, bytes);
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      decodedbytes = unchunk(buffer, bytes, &unchstate);
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      printf(" -> decoded into %4d raw bytes\r\n", decodedbytes);
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      printf(" -> decoded into %4d raw bytes\r\n", decodedbytes);
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      memcpy(file_decoded + file_decoded_len, buffer, decodedbytes);
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      memcpy(file_decoded + file_decoded_len, buffer, decodedbytes);
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      file_decoded_len += decodedbytes;
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      file_decoded_len += decodedbytes;
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      bytesprocessed += bytes;
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      bytesprocessed += bytes;
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      if (bytesprocessed == file_chunked_len) break;
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      if (bytesprocessed == file_chunked_len) break;