Commit Graph

1971 Commits

Author SHA1 Message Date
Lasse Collin 3bc112c2d3 tuklib_integer: Improve unaligned memory access.
Now memcpy() or GNU C packed structs for unaligned access instead
of type punning. See the comment in this commit for details.

Avoiding type punning with unaligned access is needed to
silence gcc -fsanitize=undefined.

New functions: unaliged_readXXne and unaligned_writeXXne where
XX is 16, 32, or 64.
2019-06-01 18:41:16 +03:00
Lasse Collin 2a22de439e liblzma: Avoid memcpy(NULL, foo, 0) because it is undefined behavior.
I should have always known this but I didn't. Here is an example
as a reminder to myself:

    int mycopy(void *dest, void *src, size_t n)
    {
        memcpy(dest, src, n);
        return dest == NULL;
    }

In the example, a compiler may assume that dest != NULL because
passing NULL to memcpy() would be undefined behavior. Testing
with GCC 8.2.1, mycopy(NULL, NULL, 0) returns 1 with -O0 and -O1.
With -O2 the return value is 0 because the compiler infers that
dest cannot be NULL because it was already used with memcpy()
and thus the test for NULL gets optimized out.

In liblzma, if a null-pointer was passed to memcpy(), there were
no checks for NULL *after* the memcpy() call, so I cautiously
suspect that it shouldn't have caused bad behavior in practice,
but it's hard to be sure, and the problematic cases had to be
fixed anyway.

Thanks to Jeffrey Walton.
2019-05-13 20:05:17 +03:00
Lasse Collin d3fc850cfe Update THANKS. 2019-05-11 20:56:08 +03:00
Lasse Collin 4adb8288ab xz: Update xz man page date. 2019-05-11 20:54:12 +03:00
Antoine Cœur 2fb0ddaa55 spelling 2019-05-11 20:52:37 +03:00
Lasse Collin 4ed3396061 xz: In xz -lvv look at the widths of the check names too.
Now the widths of the check names is used to adjust the width
of the Check column. This way there no longer is a need to restrict
the widths of the check names to be at most ten terminal-columns.
2019-05-01 18:43:10 +03:00
Lasse Collin 2f4281a100 xz: Fix xz -lvv column alignment to look at the translated strings. 2019-05-01 18:33:25 +03:00
Lasse Collin 01d01b7c7c Update THANKS. 2019-05-01 16:52:36 +03:00
Lasse Collin 64030c6b17 Windows: Update VS version in windows/vs2019/config.h. 2019-05-01 16:43:16 +03:00
Julien Marrec 2dc9117f5f Windows: Upgrade solution itself 2019-05-01 16:41:26 +03:00
Julien Marrec ac31413916 Windows: Upgrade solution with VS2019 2019-05-01 16:41:26 +03:00
Julien Marrec be25a0c37b Windows: Duplicate windows/vs2017 before upgrading 2019-05-01 16:40:52 +03:00
Lasse Collin d0e58b3a51 README: Update translation instructions.
XZ Utils is now part of the Translation Project
<https://translationproject.org/>.
2019-03-04 22:49:04 +02:00
Lasse Collin a750c35a7d xz: Automatically align column headings in xz -lvv. 2019-03-04 21:20:39 +02:00
Lasse Collin 6cb42e8aa1 xz: Automatically align strings ending in a colon in --list output.
This should avoid alignment errors in translations with these
strings.
2019-03-04 21:16:59 +02:00
Lasse Collin 1e3f29b62f Windows/VS2017: Omit WindowsTargetPlatformVersion from project files.
I understood that if a WTPV is specified, it's often wrong
because different VS installations have different SDK version
installed. Omitting the WTPV tag makes VS2017 default to
Windows SDK 8.1 which often is also missing, so in any case
people may need to specify the WTPV before building. But some
day in the future a missing WTPV tag will start to default to
the latest installed SDK which sounds reasonable:

https://developercommunity.visualstudio.com/content/problem/140294/windowstargetplatformversion-makes-it-impossible-t.html

Thanks to "dom".
2019-01-13 17:29:23 +02:00
Lasse Collin 4d86076332 Update THANKS. 2018-12-20 20:42:29 +02:00
Lasse Collin b55d79461d xz: Fix a crash in progress indicator when in passthru mode.
"xz -dcfv not_an_xz_file" crashed (all four options are
required to trigger it). It caused xz to call
lzma_get_progress(&strm, ...) when no coder was initialized
in strm. In this situation strm.internal is NULL which leads
to a crash in lzma_get_progress().

The bug was introduced when xz started using lzma_get_progress()
to get progress info for multi-threaded compression, so the
bug is present in versions 5.1.3alpha and higher.

Thanks to Filip Palian <Filip.Palian@pjwstk.edu.pl> for
the bug report.
2018-12-20 20:39:20 +02:00
Lasse Collin 4ae5526de0 xz: Update man page timestamp. 2018-11-22 17:20:31 +02:00
Pavel Raiskup 6a36d0d5f4 'have have' typos 2018-11-22 17:19:09 +02:00
Lasse Collin 9eca51ef80 Update THANKS. 2018-11-02 20:40:48 +02:00
Lasse Collin 106d1a663d Tests: Add a fuzz test program and a config file for OSS-Fuzz.
Thanks to Bhargava Shastry and Github user pdknsk.
2018-11-02 20:40:14 +02:00
Lasse Collin a18ae42a79 liblzma: Don't verify header CRC32s if building for fuzz testing.
FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION is #defined when liblzma
is being built for fuzz testing.

Most fuzzed inputs would normally get rejected because of incorrect
CRC32 and the actual header decoding code wouldn't get fuzzed.
Disabling CRC32 checks avoids this problem. The fuzzer program
must still use LZMA_IGNORE_CHECK flag to disable verification of
integrity checks of uncompressed data.
2018-10-26 22:49:10 +03:00
Lasse Collin f76f7516d6 xzless: Rename unused variables to silence static analysers.
In this particular case I don't see this affecting readability
of the code.

Thanks to Pavel Raiskup.
2018-07-27 18:10:44 +03:00
Lasse Collin 3cbcaeb07e liblzma: Remove an always-true condition from lzma_index_cat().
This should help static analysis tools to see that newg
isn't leaked.

Thanks to Pavel Raiskup.
2018-07-27 16:02:58 +03:00
Lasse Collin 76762ae609 liblzma: Improve lzma_properties_decode() API documentation. 2018-05-19 21:23:25 +03:00
Lasse Collin 2267f5b0d2 Bump the version number to 5.3.1alpha. 2018-04-29 18:58:19 +03:00
Lasse Collin cee3021d30 extra/scanlzma: Fix compiler warnings. 2018-04-29 18:48:00 +03:00
Lasse Collin c5c7ceb08a DOS: Add file_info.c to the list of files to build. 2018-04-29 18:44:47 +03:00
Lasse Collin 114cab97af Update NEWS for 5.3.1alpha. 2018-04-29 18:33:10 +03:00
Lasse Collin b8139e11c5 Add NEWS for 5.2.4. 2018-04-29 18:30:48 +03:00
Lasse Collin 47b59d47cf Update THANKS. 2018-02-06 19:36:30 +02:00
Ben Boeckel bc19799169 nothrow: use noexcept for C++11 and newer
In C++11, the `throw()` specifier is deprecated and `noexcept` is
preffered instead.
2018-02-06 18:41:45 +02:00
Lasse Collin fb6d4f83cb liblzma: Remove incorrect #ifdef from range_common.h.
In most cases it was harmless but it could affect some
custom build systems.

Thanks to Pippijn van Steenhoven.
2018-02-06 18:02:48 +02:00
Lasse Collin bc577d35c2 Update THANKS. 2018-01-10 22:10:39 +02:00
Lasse Collin 713bbc1a80 tuklib_integer: New Intel C compiler needs immintrin.h.
Thanks to Melanie Blower (Intel) for the patch.
2018-01-10 21:54:27 +02:00
Lasse Collin a0ee1afbd9 Update THANKS. 2017-09-24 20:04:24 +03:00
Lasse Collin a1e2c568de Windows: Fix paths in VS project files.
Some paths use slashes instead of backslashes as directory
separators... now it should work (I tested VS2013 version).
2017-09-16 20:36:20 +03:00
Lasse Collin cea5cf8d26 Windows: Update VS2017 project files to include file info decoder. 2017-09-16 12:56:20 +03:00
Lasse Collin 95d563db3e Windows: Add project files for VS2017.
These files match the v5.2 branch (no file info decoder).
2017-09-16 12:56:05 +03:00
Lasse Collin ab72416d62 Windows: Update VS2013 project files to include file info decoder. 2017-09-16 12:45:50 +03:00
Lasse Collin 8238898018 Windows: Move VS2013 files into windows/vs2013 directory. 2017-09-16 12:44:06 +03:00
Lasse Collin 94e3f986aa Fix or hide warnings from GCC 7's -Wimplicit-fallthrough. 2017-08-14 20:08:33 +03:00
Alexey Tourbin 0b0e1e6803 Docs: Fix a typo in a comment in doc/examples/02_decompress.c. 2017-05-23 18:46:49 +03:00
Lasse Collin a015cd1f90 xz: Fix "xz --list --robot missing_or_bad_file.xz".
It ended up printing an uninitialized char-array when trying to
print the check names (column 7) on the "totals" line.

This also changes the column 12 (minimum xz version) to
50000002 (xz 5.0.0) instead of 0 when there are no valid
input files.

Thanks to kidmin for the bug report.
2017-05-23 18:34:43 +03:00
Lasse Collin c2e29f06a7 Docs: Add doc/examples/11_file_info.c. 2017-04-24 20:20:11 +03:00
Lasse Collin 1520f6ec80 Build: Omit pre-5.0.0 entries from the generated ChangeLog.
It makes ChangeLog significantly smaller.
2017-04-24 19:48:47 +03:00
Lasse Collin 8269782283 xz: Use lzma_file_info_decoder() for --list. 2017-04-24 19:48:23 +03:00
Lasse Collin e353d0b1cc liblzma: Add lzma_file_info_decoder(). 2017-04-24 19:48:04 +03:00
Lasse Collin 144ef9e19e Update the Git repository URL to HTTPS in ChangeLog. 2017-04-24 19:30:22 +03:00