zstd: Fix incorrect repeat coding in best mode #923
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When extending back repeats we may encounter the [`literals_length = 0`](https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#repeat-offsets]) exception, which changes the meaning of offsets. This means the repeat matches the wrong offset. There is little gain extending repeats back anyway, so just avoid it. Fixes #922
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[](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | `v1.17.5` -> `v1.17.6` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), 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 [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4xNzMuMCIsInVwZGF0ZWRJblZlciI6IjM3LjE3My4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <[email protected]> Co-authored-by: Alex Boten <[email protected]>
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…1060) [](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | `v1.17.5` -> `v1.17.6` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on tuesday" (UTC), 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 [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/open-telemetry/opentelemetry-collector-contrib). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4xNzMuMCIsInVwZGF0ZWRJblZlciI6IjM3LjE3My4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9--> --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: opentelemetrybot <[email protected]> Co-authored-by: Yang Song <[email protected]>
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), 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://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), 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://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), 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://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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) This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [github.com/klauspost/compress](https://togithub.com/klauspost/compress) | indirect | patch | `v1.17.5` -> `v1.17.7` | --- > [!WARNING] > Some dependencies could not be looked up. Check the Dependency Dashboard for more information. --- ### Release Notes <details> <summary>klauspost/compress (github.com/klauspost/compress)</summary> ### [`v1.17.7`](https://togithub.com/klauspost/compress/releases/tag/v1.17.7) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.6...v1.17.7) #### What's Changed - s2: Add AsyncFlush method: Complete the block without flushing by [@​Jille](https://togithub.com/Jille) in [https://github.com/klauspost/compress/pull/927](https://togithub.com/klauspost/compress/pull/927) - s2: Fix literal+repeat exceeds dst crash by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/930](https://togithub.com/klauspost/compress/pull/930) **Full Changelog**: klauspost/compress@v1.17.6...v1.17.7 ### [`v1.17.6`](https://togithub.com/klauspost/compress/releases/tag/v1.17.6) [Compare Source](https://togithub.com/klauspost/compress/compare/v1.17.5...v1.17.6) #### What's Changed - zstd: Fix incorrect repeat coding in best mode by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/923](https://togithub.com/klauspost/compress/pull/923) - s2: Fix DecodeConcurrent deadlock on errors by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/925](https://togithub.com/klauspost/compress/pull/925) - build: Remove garble compiler by [@​klauspost](https://togithub.com/klauspost) in [https://github.com/klauspost/compress/pull/924](https://togithub.com/klauspost/compress/pull/924) **Full Changelog**: klauspost/compress@v1.17.5...v1.17.6 </details> --- ### Configuration 📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), 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://togithub.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yMjEuMCIsInVwZGF0ZWRJblZlciI6IjM3LjIyMS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
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When extending back repeats we may encounter the
literals_length = 0exception, which changes the meaning of offsets. This means the repeat matches the wrong offset.There is little gain extending repeats back anyway, so just avoid it.
Fixes #922