| // Copyright 2024 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #![cfg_attr(fuzzing, no_main)] |
| |
| use arbitrary::{Arbitrary, Unstructured}; |
| use derive_fuzztest::fuzztest; |
| |
| #[derive(Debug, Clone)] |
| pub struct SmallU8(u8); |
| |
| impl<'a> Arbitrary<'a> for SmallU8 { |
| fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> { |
| Ok(SmallU8(u.int_in_range(0..=127)?)) |
| } |
| } |
| |
| #[fuzztest] |
| pub fn test(a: SmallU8, b: SmallU8) { |
| let _ = a.0 + b.0; // Succeeds because our custom arbitrary impl only generates 0-127 so it never overflows |
| } |
