tvl-depot/users/zseri/store-ref-scanner/fuzz/fuzz_targets/hbm-roundtrip.rs
zseri f4dddea4c3 fix(zseri/store-ref-scanner): no_std support and runtime panics
This also changes the fuzzing infrastructure from proptest to cargo-fuzz,
and this lead to the discovery of two mishandlings of edge-cases:

* when a "path_to_store" is at the end of the input, it tried to access
  the input slice out-of-bounds (the `just_store` test covers that now)
* non-ASCII characters lead to an out-of-bounds access in HalfBytesMask
  (the `non_ascii` test covers that now)

Change-Id: Icaa2518dcd93e1789a2c0da4cf0fec46016d3bad
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4604
Tested-by: BuildkiteCI
Reviewed-by: zseri <zseri.devel@ytrizja.de>
2021-12-25 05:03:10 +00:00

13 lines
359 B
Rust

#![no_main]
use libfuzzer_sys::fuzz_target;
fuzz_target!(|data: &[u8]| {
use core::convert::TryInto;
use store_ref_scanner::HalfBytesMask;
for i in data.chunks_exact(16) {
let a = HalfBytesMask(i.try_into().unwrap());
let b = a.into_expanded();
let c = HalfBytesMask::from_expanded(b);
assert_eq!(a, c);
}
});