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fix(inflate): byte boundary aligning underflow

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This commit is contained in:
Erica Marigold 2025-01-07 15:53:26 +00:00
parent 77d1a75996
commit 6daf378492
Signed by: DevComp
GPG key ID: 429EF1C337871656
1 changed files with 4 additions and 4 deletions
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8
lib/inflate.luau
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@ -313,10 +313,10 @@ end
--- Processes an uncompressed block
local function inflateUncompressedBlock(d: Data)
-- Align to byte boundary
while d.bitcount > 8 do
d.sourceIndex -= 1
d.bitcount -= 8
end
local bytesToMove = d.bitcount // 8
d.sourceIndex -= bytesToMove
d.bitcount = 0
d.tag = 0
-- Read block length and its complement
local length = buffer.readu8(d.source, d.sourceIndex + 1)