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Merge pull request #27047 from vrabaud:lzw

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Move the CV_Assert above the << operation to not trigger the fuzzer
This commit is contained in:
Alexander Smorkalov
2025-03-14 09:01:15 +03:00
committed by GitHub
parent 2a8d4b8e43 186537a315
commit 14396b8029
1 changed files with 1 additions and 1 deletions
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modules/imgcodecs/src/grfmt_gif.cpp
+1 -1
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@@ -319,9 +319,9 @@ bool GifDecoder::lzwDecode() {
lzwMinCodeSize = m_strm.getByte();
const int lzwMaxSize = (1 << 12); // 4096 is the maximum size of the LZW table (12 bits)
int lzwCodeSize = lzwMinCodeSize + 1;
CV_Assert(lzwCodeSize > 2 && lzwCodeSize <= 12);
int clearCode = 1 << lzwMinCodeSize;
int exitCode = clearCode + 1;
CV_Assert(lzwCodeSize > 2 && lzwCodeSize <= 12);
std::vector<lzwNodeD> lzwExtraTable(lzwMaxSize + 1);
int colorTableSize = clearCode;
int lzwTableSize = exitCode;