Brandon ThomasandClaude Opus 5.5 a5d830bf25 Never crash: predictor rows and stroke widths from the input can't exhaust memory ...

The second full nightly fuzz run on main found two more:
- hayro-syntax computed a Flate/LZW predictor row as columns × bits in
  wrapping arithmetic: /Columns 9223372036854775807 asked for 2^61 bytes and
  aborted on any machine. Row widths are now saturating usize (colors × bits
  also overflowed u8), a zero width is refused (it divided by zero), and a
  row longer than the data is not allocated (empty output, as before).
- hayro stroked /LW 9223372036854775807 as given, and stroke expansion
  allocated 10 GB. Widths are clamped to 4 × (canvas width + height) device
  pixels, which covers the same pixels.
Both findings now run in 8 MB. Synthetic regression test in render.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-05 01:06:45 -04:00

..

src

Never crash: predictor rows and stroke widths from the input can't exhaust memory

2026-10-05 01:06:45 -04:00

Cargo.toml

more progress, roadmap, wip

2026-09-30 11:00:02 -04:00