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## Unreleased
Released YYYY-MM-DD.
### Added
* TODO (or remove section if none)
### Changed
* TODO (or remove section if none)
### Deprecated
* TODO (or remove section if none)
### Removed
* TODO (or remove section if none)
### Fixed
* TODO (or remove section if none)
### Security
* TODO (or remove section if none)
--------------------------------------------------------------------------------
## 0.4.6
Released 2023-01-26.
### Fixed
* Fixed a potential name conflict in functions generated by the `fuzz_target!`
macro.
* Fixed potential stale builds when updating custom libfuzzers to link against.
--------------------------------------------------------------------------------
## 0.4.5
Released 2022-10-18.
### Added
* Added the ability to tell libfuzzer whether to keep files inputs in the corpus
or not. See the `Corpus` type and extended documentation for the
`fuzz_target!` macro for details.
### Changed
* Ensured that there is always at least one inline-never frame on the stack per
fuzz target. This helps prevent oss-fuzz from "deduplicating" different bugs
from different fuzz targets into the same bug.
--------------------------------------------------------------------------------
## 0.4.4
Released 2022-09-01.
### Changed
* Updated to `libFuzzer` commit `df90d22` (`release/15.x`).
* LLVM 16's [upcoming change][llvm_cxx17] to build requirements to C++17
necessitate reflecting those changes. (`libFuzzer` updates contain C++14 code)
* Drastically reduce build times by using parallel C++ compilation jobs
* Updated `rand` dependency from 0.8.3 to 0.8.5
* Updated `flate2` dependency from 1.0.20 to 1.0.24
[llvm_cxx17]: https://llvm.org/docs/ReleaseNotes.html#update-on-required-toolchains-to-build-llvm
--------------------------------------------------------------------------------
## 0.4.3
Released 2020-03-03.
### Changed
* Updated to `libFuzzer` commit `60e32a1`.
### Fixed
* Fixed an issue where the `fuzz_target!` macro would sometimes expand to
versions of itself that were not `$crate` prefixed and would result in "error:
cannot find macro `fuzz_target` in this scope" if the caller didn't import the
macro but used the qualified version of it instead.
--------------------------------------------------------------------------------
## 0.4.2
Released 2020-05-26.
### Changed
* Improved performance of checking for whether `cargo fuzz` is requesting the
`std::fmt::Debug` output of an input or not. This is always false during
regular fuzzing, so making this check faster should give slightly better
fuzzing throughput.
--------------------------------------------------------------------------------
## 0.4.1
Released 2020-05-13.
### Added
* Added support for defining custom mutators. See [the documentation for the
`fuzz_mutator!`
macro](https://docs.rs/libfuzzer-sys/0.4.1/libfuzzer_sys/macro.fuzz_mutator.html)
for details.
### Changed
* Upgraded libfuzzer to llvm/llvm-project's 70cbc6d.
--------------------------------------------------------------------------------
## 0.4.0
Released 2021-02-24.
### Changed
* The public `arbitrary` dependency was updated to version 1.0.
--------------------------------------------------------------------------------
## 0.3.5
Released 2020-11-18.
### Changed
* [Upgrade libfuzzer to 7bf89c2](https://github.com/rust-fuzz/libfuzzer/pull/68)
--------------------------------------------------------------------------------
## 0.3.4
Released 2020-08-22.
### Changed
* Updated `arbitrary` dependency to 0.4.6
--------------------------------------------------------------------------------
## 0.3.3
Released 2020-07-27.
### Changed
* Upgraded libfuzzer to commit
[4a4cafa](https://github.com/llvm/llvm-project/commit/4a4cafabc9067fced5890a245b03ef5897ad988b).
Notably, this pulls in [the new Entropic engine for
libFuzzer](https://mboehme.github.io/paper/FSE20.Entropy.pdf), which should
boost fuzzing efficiency when enabled. You can enable Entropic by passing
`-entropic=1` to your built fuzz targets (although, note that it is still
labeled "experimental").
--------------------------------------------------------------------------------
## 0.3.2
Released 2020-03-18.
### Changed
* Upgraded the `arbitrary` dependency re-export to version 0.4.1.
--------------------------------------------------------------------------------
## 0.3.1
Released 2020-02-27.
### Changed
* Fixed a fuzzing performance issue where libfuzzer could unnecessarily spend
time exploring all the ways that an `Arbitrary` implementation could fail to
construct an instance of itself because the fuzzer provided too few bytes. See
https://github.com/rust-fuzz/libfuzzer/issues/59 for details.
--------------------------------------------------------------------------------
## 0.3.0
Released 2019-01-22.
### Changed
* Now works with and re-exports `arbitrary` versions 0.4.x.
--------------------------------------------------------------------------------
## 0.2.1
Released 2019-01-16.
### Added
* Added support for the `CUSTOM_LIBFUZZER_STD_CXX=<lib>` environment variable
during builds that already use a custom libFuzzer checkout with
`CUSTOM_LIBFUZZER_PATH`. This allows you to explicitly choose to link LLVM or
GNU C++ standard libraries.
--------------------------------------------------------------------------------
## 0.2.0
Released 2020-01-14.
### Changed
* Using `arbitrary` 0.3.x now. It is re-exported as `libfuzzer_sys::arbitrary`.
### Added
* You can enable support for `#[derive(Arbitrary)]` with the
`"arbitrary-derive"` cargo feature. This is a synonym for the `arbitrary`
crate's `"derive"` cargo feature.
--------------------------------------------------------------------------------
## 0.1.0
|
