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Thank you for submitting this issue, we will go ahead and fix it. This uninitialized value currently does not cause an issue because in this loop https://github.com/01org/isa-l/blob/9e79faeeff129ce5964fc40174d007c32e49e5b3/igzip/huff_codes.c#L1015-L1016
the important bits for next_code[i] are the first i bits, which are not set by count[0]. All other bits are masked off in a call to the function bit_reverse a short while later.
code_len_count, bl_count[0] uninitialized in this two part
https://github.com/01org/isa-l/blob/9e79faeeff129ce5964fc40174d007c32e49e5b3/igzip/huff_codes.c#L964-L967
https://github.com/01org/isa-l/blob/9e79faeeff129ce5964fc40174d007c32e49e5b3/igzip/huff_codes.c#L976-L980
and use in the following line
https://github.com/01org/isa-l/blob/9e79faeeff129ce5964fc40174d007c32e49e5b3/igzip/huff_codes.c#L1487-L1490
the argument count usd the following line, and usd count[0], may cause problem
https://github.com/01org/isa-l/blob/9e79faeeff129ce5964fc40174d007c32e49e5b3/igzip/huff_codes.c#L1015-L1016
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