Optional targets (not `make check`)
===================================

    make fuzz-css
    ./tests/fuzz/rsvg-fuzz-css
    ./tests/fuzz/rsvg-fuzz-css --seconds 3600

    make fuzz-afl
    afl-fuzz -i tests/fuzz/seeds -o tests/fuzz/out -- ./tests/fuzz/rsvg-fuzz-css-afl @@
    # skips if AFL++ is missing; not make check; Ctrl-C to stop; crashes/hangs under out/

CSS/SVG harness on the css/ path. See `tests/fuzz/README`.

    make -C tests fuzz-bmp
    ./tests/fuzz-bmp [--mutate N]

Offline BMP / RLE harness.

    make check-parity

Rust-oracle reftests (`tests/README-parity.md`).
