(&mut self, fuzzer: &mut Fuzzer)
| 58 | } |
| 59 | |
| 60 | pub fn random_replace(&mut self, fuzzer: &mut Fuzzer) -> Option<()> { |
| 61 | const MAX_REPLACEMENT_ATTEMPTS: usize = 100; |
| 62 | |
| 63 | let mut num_mutations: u32 = fuzzer.rng.gen_range(1..32); |
| 64 | for _ in 0..MAX_REPLACEMENT_ATTEMPTS { |
| 65 | let cmp = self.comparisons.select_random(&mut fuzzer.rng); |
| 66 | let (_, operands) = self.comparisons.get(cmp)?; |
| 67 | |
| 68 | let (stream_addr, _) = self.streams[self.stream_distr.sample(&mut fuzzer.rng)]; |
| 69 | let stream = fuzzer.state.input.streams.get_mut(&stream_addr)?; |
| 70 | |
| 71 | if stream.cursor as usize == stream.bytes.len() { |
| 72 | continue; |
| 73 | } |
| 74 | let offset = fuzzer.rng.gen_range(stream.cursor as usize..stream.bytes.len()); |
| 75 | self.finder.reset(offset); |
| 76 | |
| 77 | if self.finder.find_match(stream, operands) { |
| 78 | self.finder.apply_replacement(&mut stream.bytes); |
| 79 | num_mutations = match num_mutations.checked_sub(1) { |
| 80 | Some(x) => x, |
| 81 | None => break, |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | Some(()) |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | pub(crate) struct I2SReplaceStage { |
no test coverage detected