Control: forwarded -1 https://github.com/pnggroup/libpng/discussions/864
On 19.10.25 Aaron M. Ucko ([email protected]) wrote: > Package: texlive-binaries > Version: 2025.20250727.75242+ds-4 > Severity: normal > User: [email protected] > Usertags: randomness toolchain > Fix forwarded address. > I have found that when a PNG image's row width does not correspond to a > whole number of bytes, the low-order bits of the last byte in each > uncompressed row can fluctuate between pdflatex runs, at least when > libpng can perform SIMD-assisted decompression, yielding > nondeterministic output even when arranging to supply predetermined > timestamps. (Moreover, this fluctuation can affect the length of the > resulting compressed stream, slightly shifting the file position of > subsequent content.) >
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