Fix #675 (#691)

* fix * wrapping
2022-07-04 20:11:28 +02:00 · 2022-07-04 20:11:28 +02:00 · 7870a6e699
commit 7870a6e699
parent be3d1d588f
1 changed files with 1 additions and 1 deletions
--- a/libafl/src/mutators/mutations.rs
+++ b/libafl/src/mutators/mutations.rs
@ -271,7 +271,7 @@ where
            Ok(MutationResult::Skipped)
        } else {
            let byte = state.rand_mut().choose(input.bytes_mut());
-            *byte = (-(*byte as i16)) as u8;
+            *byte = (!(*byte)).wrapping_add(1);
            Ok(MutationResult::Mutated)
        }
    }