Use corpus rejection for discarding large inputs #1002
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BurntSushi
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Jul 5, 2023
I usually close tickets on a commit-by-commit basis, but this refactor was so big that it wasn't feasible to do that. So ticket closures are marked here. Closes #244 Closes #259 Closes #476 Closes #644 Closes #675 Closes #824 Closes #961 Closes #68 Closes #510 Closes #787 Closes #891 Closes #429 Closes #517 Closes #579 Closes #779 Closes #850 Closes #921 Closes #976 Closes #1002 Closes #656
crapStone
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Jul 18, 2023
This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [regex](https://github.com/rust-lang/regex) | dependencies | minor | `1.8.4` -> `1.9.1` | --- ### Release Notes <details> <summary>rust-lang/regex (regex)</summary> ### [`v1.9.1`](https://github.com/rust-lang/regex/blob/HEAD/CHANGELOG.md#191-2023-07-07) [Compare Source](rust-lang/regex@1.9.0...1.9.1) \================== This is a patch release which fixes a memory usage regression. In the regex 1.9 release, one of the internal engines used a more aggressive allocation strategy than what was done previously. This patch release reverts to the prior on-demand strategy. Bug fixes: - [BUG #​1027](rust-lang/regex#1027): Change the allocation strategy for the backtracker to be less aggressive. ### [`v1.9.0`](https://github.com/rust-lang/regex/blob/HEAD/CHANGELOG.md#190-2023-07-05) [Compare Source](rust-lang/regex@1.8.4...1.9.0) \================== This release marks the end of a [years long rewrite of the regex crate internals](rust-lang/regex#656). Since this is such a big release, please report any issues or regressions you find. We would also love to hear about improvements as well. In addition to many internal improvements that should hopefully result in "my regex searches are faster," there have also been a few API additions: - A new `Captures::extract` method for quickly accessing the substrings that match each capture group in a regex. - A new inline flag, `R`, which enables CRLF mode. This makes `.` match any Unicode scalar value except for `\r` and `\n`, and also makes `(?m:^)` and `(?m:$)` match after and before both `\r` and `\n`, respectively, but never between a `\r` and `\n`. - `RegexBuilder::line_terminator` was added to further customize the line terminator used by `(?m:^)` and `(?m:$)` to be any arbitrary byte. - The `std` Cargo feature is now actually optional. That is, the `regex` crate can be used without the standard library. - Because `regex 1.9` may make binary size and compile times even worse, a new experimental crate called `regex-lite` has been published. It prioritizes binary size and compile times over functionality (like Unicode) and performance. It shares no code with the `regex` crate. New features: - [FEATURE #​244](rust-lang/regex#244): One can opt into CRLF mode via the `R` flag. e.g., `(?mR:$)` matches just before `\r\n`. - [FEATURE #​259](rust-lang/regex#259): Multi-pattern searches with offsets can be done with `regex-automata 0.3`. - [FEATURE #​476](rust-lang/regex#476): `std` is now an optional feature. `regex` may be used with only `alloc`. - [FEATURE #​644](rust-lang/regex#644): `RegexBuilder::line_terminator` configures how `(?m:^)` and `(?m:$)` behave. - [FEATURE #​675](rust-lang/regex#675): Anchored search APIs are now available in `regex-automata 0.3`. - [FEATURE #​824](rust-lang/regex#824): Add new `Captures::extract` method for easier capture group access. - [FEATURE #​961](rust-lang/regex#961): Add `regex-lite` crate with smaller binary sizes and faster compile times. - [FEATURE #​1022](rust-lang/regex#1022): Add `TryFrom` implementations for the `Regex` type. Performance improvements: - [PERF #​68](rust-lang/regex#68): Added a one-pass DFA engine for faster capture group matching. - [PERF #​510](rust-lang/regex#510): Inner literals are now used to accelerate searches, e.g., `\w+@​\w+` will scan for `@`. - [PERF #​787](rust-lang/regex#787), [PERF #​891](rust-lang/regex#891): Makes literal optimizations apply to regexes of the form `\b(foo|bar|quux)\b`. (There are many more performance improvements as well, but not all of them have specific issues devoted to them.) Bug fixes: - [BUG #​429](rust-lang/regex#429): Fix matching bugs related to `\B` and inconsistencies across internal engines. - [BUG #​517](rust-lang/regex#517): Fix matching bug with capture groups. - [BUG #​579](rust-lang/regex#579): Fix matching bug with word boundaries. - [BUG #​779](rust-lang/regex#779): Fix bug where some regexes like `(re)+` were not equivalent to `(re)(re)*`. - [BUG #​850](rust-lang/regex#850): Fix matching bug inconsistency between NFA and DFA engines. - [BUG #​921](rust-lang/regex#921): Fix matching bug where literal extraction got confused by `$`. - [BUG #​976](rust-lang/regex#976): Add documentation to replacement routines about dealing with fallibility. - [BUG #​1002](rust-lang/regex#1002): Use corpus rejection in fuzz testing. </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi4wLjAiLCJ1cGRhdGVkSW5WZXIiOiIzNi44LjExIiwidGFyZ2V0QnJhbmNoIjoiZGV2ZWxvcCJ9--> Co-authored-by: cabr2-bot <cabr2.help@gmail.com> Co-authored-by: crapStone <crapstone01@gmail.com> Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1957 Reviewed-by: crapStone <crapstone01@gmail.com> Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org> Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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When discarding an input as invalid, you should use corpus rejection: https://llvm.org/docs/LibFuzzer.html#rejecting-unwanted-inputs