Unreleased

Released YYYY-MM-DD.

Added

  • TODO (or remove section if none)

Changed

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Deprecated

  • TODO (or remove section if none)

Removed

  • TODO (or remove section if none)

Fixed

  • TODO (or remove section if none)

Security

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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

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

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.

    Notably, this pulls in the new Entropic engine for libFuzzer, 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