| Commit message (Collapse) | Author | Age | Files | Lines |
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compilers
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notably regarding ubsan test status (now enabled)
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fixed a few remaining ubsan warnings in lz4hc
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mostly related to pointer arithmetic involving NULL ptr.
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attempt to enable ubsan tests in CI
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allocation optimization for lz4frame compression
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as noted by @yixiutt, the temporary buffer inside lz4frame compression
is being invalidated at end of compression,
forcing it to be re-allocated at next compression job.
This shouldn't be necessary.
This change was introduced in #236, as a way to fix #232,
but neither the issue is explained, nor why the patch fixes it.
This patch revert to previous behavior,
where temporary buffer is kept between compression calls.
This results in a net reduction of allocation workload.
Additionally, the temporary buffer should only need malloc(),
not calloc(), thus saving initialization.
This diff implements both changes.
Long fuzzer tests will be run to ensure that no sanitizer warning get triggered.
Additionally :
fixed a minor ubsan warning in LZ4F_decompress().
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lz4/dependabot/github_actions/actions/upload-artifact-3
Bump actions/upload-artifact from 1 to 3
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Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 1 to 3.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v1...v3)
---
updated-dependencies:
- dependency-name: actions/upload-artifact
dependency-type: direct:production
update-type: version-update:semver-major
...
Signed-off-by: dependabot[bot] <support@github.com>
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Bump actions/checkout from 2 to 3
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Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v3)
---
updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-major
...
Signed-off-by: dependabot[bot] <support@github.com>
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lz4/dependabot/github_actions/actions/setup-python-4
Bump actions/setup-python from 2 to 4
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Bumps [actions/setup-python](https://github.com/actions/setup-python) from 2 to 4.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v2...v4)
---
updated-dependencies:
- dependency-name: actions/setup-python
dependency-type: direct:production
update-type: version-update:semver-major
...
Signed-off-by: dependabot[bot] <support@github.com>
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Add dependabot
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Dependabot is configured to update GitHub actions. It will check weekly.
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Cancel in-progress CI if a new commit workflow supplants it
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This is useful when repushing to a PR very quickly and when merging to
dev very quickly.
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Support MSVC 2022 (version 17.3)
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https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/strtoui64-wcstoui64-strtoui64-l-wcstoui64-l
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This patch fixes the following error from "make staticAnalyze"
datagencli.c:106:21: warning: Value stored to 'size' is never read
size=0;
^ ~
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Suppress the following false positive warnings from MSVC:
- Disable all arithmetic overflow (C26451)
- Suppress C6385: Reading invalid data from 'compressedBuffer'.
- Add ULL suffix to unsigned 64-bits constants.
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MSVC 2022 reports the follwing false positve warnings:
lz4\tests\datagencli.c(110): warning C26451: Arithmetic overflow: Using operator '-' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator '-' to avoid overflow (io.2).
lz4\tests\datagencli.c(134): warning C26451: Arithmetic overflow: Using operator '-' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator '-' to avoid overflow (io.2).
lz4\tests\datagencli.c(146): warning C26451: Arithmetic overflow: Using operator '-' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator '-' to avoid overflow (io.2).
Although they're absolutely compiler's and static analyzer's bug,
it'd always be nice to use the standard library.
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Since rc.exe (the resource compiler) is legacy compiler, it truncates preprocessor symbol name length to 32 chars.
And it reports the following warning
lz4\build\VS2022\..\..\lib\lz4.h(314): warning RC4011: identifier truncated to 'LZ4_STATIC_LINKING_ONLY_DISABLE'
lz4\build\VS2022\..\..\lib\lz4.h(401): warning RC4011: identifier truncated to 'LZ4_STATIC_LINKING_ONLY_DISABLE'
This patch detects rc.exe and just skips long symbol.
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MSVC (17.3 or earlier) reports the following warning
lz4\lib\lz4.c(527): warning C6385: Reading invalid data from 'v'.
Line 527 is : LZ4_memcpy(&v[4], v, 4);
But, obviously v[0..3] is always filled with meaningful value.
Therefore, this warning report is wrong.
We must revisit this issue with future version of MSVC.
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GH-Actions: Add ubuntu-22.04 and the latest C/C++ compilers for Linux
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faster CLI decompression speed for frames compressed with -BD4 setting
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lz4frame favors the faster prefix mode
when decompressing a frame with linked blocks.
This significantly improved CLI decompression on files compressed with -BD4 setting.
On my laptop, decompressing `enwik9` went from 0.89s to 0.52s.
This improvement is only for linked blocks.
It's more visible for small block sizes.
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cmake: move `cmake_minimum_required()` before `project()`
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cmake_minimum_required() must always be the first instruction of a CMakeLists.
project() should come after cmake_minimum_required() as soon as possible. Therefore option() are moved after project().
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Update documentation in preparation for release v1.9.4
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Doc freestanding
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Add document for LZ4_STATIC_LINKING_ONLY_DISABLE_MEMORY_ALLOCATION
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Add LZ4_FREESTANDING
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The 'freestanding' flag indicates a capability of compiling and executing freestanding code.
Currently it requires Linux, x86_64 and (relatively newer) gcc/g++.
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