Fix an off-by-one error in the compressor that emits corrupt blocks if:
* Zstd is compiled in 32-bit mode
* The windowLog == 25 exactly
* An offset of 2^25-3, 2^25-2, 2^25-1, or 2^25 is emitted
* The bitstream had 7 bits leftover before writing the offset
This bug has been present since before v1.0, but wasn't able to easily
be triggered, since until somewhat recently zstd wasn't able to find
matches that were within 128KB of the window size.
Add a test case, and fix 2 bugs in `ZSTD_compressSequences()`:
* The `ZSTD_isRLE()` check was incorrect. It wouldn't produce
corruption, but it could waste CPU and not emit RLE even if the block
was RLE
* One windowSize was `1 << windowLog`, not `1u << windowLog`
Thanks to @tansy for finding the issue, and giving us a reproducer!
Fixes Issue #3350.
Fix an instance of `NULL + 0` in `ZSTD_decompressStream()`. Also, improve our
`stream_decompress` fuzzer to pass `NULL` in/out buffers to
`ZSTD_decompressStream()`, and fix 2 issues that were immediately surfaced.
Fixes#3351
Split the logic for parameter adaption from the logic to update the display rate.
This decouples the two updates, so changes to display updates don't affect
parameter adaption.
Also add a test case that checks that parameter adaption actually happens.
This fixes Issue #3353, where --adapt is broken when --no-progress is passed.
Instead of using packed attribute hack, just use aligned attribute. It
improves code generation on armv6 and armv7, and slightly improves code
generation on aarch64. GCC generates identical code to regular aligned
access on ARMv6 for all versions between 4.5 and trunk, except GCC 5
which is buggy and generates the same (bad) code as packed access:
https://gcc.godbolt.org/z/hq37rz7sb
* Centralize the logic about whether to print the progress bar or not in
the `*_PROGRESS()` macros.
* Centralize the logc about whether to print the summary line or not in
`FIO_shouldDisplayFileSummary()` and
`FIO_shouldDisplayMultipleFileSummary()`.
* Make `--progress` work for non-zstd (de)compressors.
* Clean up several edge cases in compression and decompression progress
printing along the way. E.g. wrong log level, or missing summary line.
One thing I don't like about stdout mode, which sets the display level
to 1, is that warnings aren't displayed. After this PR, we could change
stdout mode from lowering the display level, to defaulting to implied
`--no-progress`. But, I think that deserves a separate PR.
* add checks to mal-formed numeric values for memory and memlimit parameters
Signed-off-by: Ly Cao <lycao@fb.com>
* changed errorMsg to a literal string instead of static string in main
* moved bogus numeric error to NEXT_UINT32 + add macro NEXT_TSIZE
Signed-off-by: Ly Cao <lycao@fb.com>
Signed-off-by: Ly Cao <lycao@fb.com>
Co-authored-by: Ly Cao <lycao@fb.com>
When creating a new `Makefile` target to build,
it's also necessary to update the `clean` target,
which purpose is to remove built targets when they are present.
This process is simple, but it's also easy to forget :
since there is a large distance between the position in the `Makefile` where the new built target is added,
and the place where the list of files to `clean` is defined.
Moreover, the list of files becomes pretty long over time,
hence it's difficult to visually ensure that all built targets are present there,
or that no old target (no longer produced) is no longer in the list
This PR tries to improve this process by adding a CLEAN variable.
Now, when a new built target is added to the `Makefile`,
it should preceded by :
```
CLEAN += newTarget
newTarget:
<TAB> ...recipe...
```
This new requirement is somewhat similar to `.PHONY: newTarget` for non-built targets.
This new method offers the advantage of locality :
there is no separate place in the file to maintain a list of files to clean.
This makes maintenance of `make clean` easier.
Adds documentation to help and man pages for legacy pass-through behavior
when force is set and destination is stdout. Documents --pass-through in
man pages
Fixes#3211.
Adds the `--[no-]pass-through` flag which enables/disables pass-through mode.
* `zstdcat`, `zcat`, and `gzcat` default to `--pass-through`.
Pass-through mode can be disabled by passing `--no-pass-through`.
* All other binaries default to not setting pass-through mode.
However, we preserve the legacy behavior of enabling pass-through
mode when writing to stdout with `-f` set, unless pass-through
mode is explicitly disabled with `--no-pass-through`.
Adds a new test for this behavior that should codify the behavior we want.
Fixes#3212.
Long literal and match lengths had an off-by-one error in ZSTD_getSequenceLength.
Fix the off-by-one error, and add a golden compression test that catches the bug.
Also run all the golden tests in the cli-tests framework.
When user pass in argument for both decompression and multi-thread, print a warning message
to indicate that multi-threaded decompression is not supported.
* Add warning when multi-thread decompression is requested
* add test case for multi-threaded decoding warning
Expectation is for -d -T0 we will not throw any warning,
and see warning for any other -d -T(>1) inputs
* Fixing compiler warnings
* Replace the old -s flag with the -Wl,-s flag
* Fixing compiler warnings
* Fixing the linker strip flag and tests/code not working as expected on AIX
* Intial commit to address 3090. Added support to decompress empty block
* Update zstd_decompress_block.c
Addressed review comments for the case of 'set_basic'
* Update lib/decompress/zstd_decompress_block.c
Co-authored-by: Nick Terrell <nickrterrell@gmail.com>
* Update lib/decompress/zstd_decompress_block.c
Co-authored-by: Nick Terrell <nickrterrell@gmail.com>
Co-authored-by: Nick Terrell <nickrterrell@gmail.com>
Streaming decompression used to wait for a minimum of 5 bytes before attempting decoding.
This meant that, in the case that only a few bytes (<5) were provided,
and assuming these bytes are incorrect,
there would be no error reported.
The streaming API would simply request more data, waiting for at least 5 bytes.
This PR makes it possible to detect incorrect Frame IDs as soon as the first byte is provided.
Fix#3169
Adopt the more standard Usage: formatting style
List short and long options alongside where available
Print lists as a table
Use command style description
Newer less versions appear to have changed how stderr
and stdout are showing error messages. hardcode the
expected behavior to make the tests pass with any less version.
Also set locale to C so that the strings are matching.
Set removeSrcFile back to false when -c or --stdout is used to improve
compatibility with gzip(1) behavior.
gzip(1) is removing the original file on compression unless --stdout or
/-c is used. zstd is defaulting to keep the file unless --rm is used or
when it is called via a gzip symlink, in which it is removing by
default. Specifying -c/--stdout turns this behavior off.
