Jia Tan [Thu, 19 Jan 2023 12:35:09 +0000 (20:35 +0800)]
tuklib_physmem: Silence warning from -Wcast-function-type on MinGW-w64.
tuklib_physmem depends on GetProcAddress() for both MSVC and MinGW-w64
to retrieve a function address. The proper way to do this is to cast the
return value to the type of function pointer retrieved. Unfortunately,
this causes a cast-function-type warning, so the best solution is to
simply ignore the warning.
Jia Tan [Mon, 16 Jan 2023 12:55:10 +0000 (20:55 +0800)]
xz: Do not set compression settings with raw format in list mode.
Calling coder_set_compression_settings() in list mode with verbose mode
on caused the filter chain and memory requirements to print. This was
unnecessary since the command results in an error and not consistent
with other formats like lzma and alone.
Lasse Collin [Thu, 12 Jan 2023 11:04:05 +0000 (13:04 +0200)]
Build: Omit -Wmissing-noreturn from the default warnings.
It's not that important. It can be annoying in builds that
disable many features since in those cases the tests programs
will correctly trigger this warning with Clang.
Lasse Collin [Thu, 12 Jan 2023 03:38:48 +0000 (05:38 +0200)]
liblzma: Silence another warning from -Wsign-conversion in a 32-bit build.
It doesn't warn on a 64-bit system because truncating
a ptrdiff_t (signed long) to uint32_t is diagnosed under
-Wconversion by GCC and -Wshorten-64-to-32 by Clang.
Lasse Collin [Thu, 12 Jan 2023 02:14:18 +0000 (04:14 +0200)]
Tests: Fix warnings from clang --Wassign-enum.
Explicitly casting the integer to lzma_check silences the warning.
Since such an invalid value is needed in multiple tests, a constant
INVALID_LZMA_CHECK_ID was added to tests.h.
The use of 0x1000 for lzma_block.check wasn't optimal as if
the underlying type is a char then 0x1000 will be truncated to 0.
However, in these test cases the value is ignored, thus even with
such truncation the test would have passed.
Lasse Collin [Thu, 12 Jan 2023 01:51:07 +0000 (03:51 +0200)]
Tests: Silence warnings from -Wsign-conversion.
Note that assigning an unsigned int to lzma_check doesn't warn
on GNU/Linux x86-64 since the enum type is unsigned on that
platform. The enum can be signed on some other platform though
so it's best to use enumeration type lzma_check in these situations.
Lasse Collin [Thu, 12 Jan 2023 01:19:59 +0000 (03:19 +0200)]
liblzma: Silence warnings from clang -Wconditional-uninitialized.
This is similar to 2ce4f36f179a81d0c6e182a409f363df759d1ad0.
The actual initialization of the variables is done inside
mythread_sync() macro. Clang doesn't seem to see that
the initialization code inside the macro is always executed.
Lasse Collin [Tue, 10 Jan 2023 09:56:11 +0000 (11:56 +0200)]
sysdefs.h: Don't include strings.h anymore.
On some platforms src/xz/suffix.c may need <strings.h> for
strcasecmp() but suffix.c includes the header when it needs it.
Unless there is an old system that otherwise supports enough C99
to build XZ Utils but doesn't have C89/C90-compatible <string.h>,
there should be no need to include <strings.h> in sysdefs.h.
Lasse Collin [Tue, 10 Jan 2023 09:23:41 +0000 (11:23 +0200)]
xz: Include <strings.h> in suffix.c if needed for strcasecmp().
SUSv2 and POSIX.1‐2017 declare only a few functions in <strings.h>.
Of these, strcasecmp() is used on some platforms in suffix.c.
Nothing else in the project needs <strings.h> (at least if
building on a modern system).
sysdefs.h currently includes <strings.h> if HAVE_STRINGS_H is
defined and suffix.c relied on this.
Note that dos/config.h doesn't #define HAVE_STRINGS_H even though
DJGPP does have strings.h. It isn't needed with DJGPP as strcasecmp()
is also in <string.h> in DJGPP.
Jia Tan [Wed, 11 Jan 2023 14:46:48 +0000 (22:46 +0800)]
xz: Fix warning -Wformat-nonliteral on clang in message.c.
clang and gcc differ in how they handle -Wformat-nonliteral. gcc will
allow a non-literal format string as long as the function takes its
format arguments as a va_list.
Jia Tan [Wed, 11 Jan 2023 12:42:29 +0000 (20:42 +0800)]
Tests: Fix type-limits warning in test_filter_flags.
This only occurs in test_filter_flags when the BCJ filters are not
configured and built. In this case, ARRAY_SIZE() returns 0 and causes a
type-limits warning with the loop variable since an unsigned number will
always be >= 0.
Lasse Collin [Tue, 10 Jan 2023 20:14:03 +0000 (22:14 +0200)]
liblzma: CLMUL CRC64: Work around a bug in MSVC, second attempt.
This affects only 32-bit x86 builds. x86-64 is OK as is.
I still cannot easily test this myself. The reporter has tested
this and it passes the tests included in the CMake build and
performance is good: raw CRC64 is 2-3 times faster than the
C version of the slice-by-four method. (Note that liblzma doesn't
include a MSVC-compatible version of the 32-bit x86 assembly code
for the slice-by-four method.)
Thanks to Iouri Kharon for figuring out a fix, testing, and
benchmarking.
It was reported that it wasn't a good enough fix and MSVC
still produced (different kind of) bad code when building
for 32-bit x86 if optimizations are enabled.
Lasse Collin [Tue, 10 Jan 2023 08:04:06 +0000 (10:04 +0200)]
sysdefs.h: Don't include memory.h anymore even if it were available.
It quite probably was never needed, that is, any system where memory.h
was required likely couldn't compile XZ Utils for other reasons anyway.
XZ Utils 5.2.6 and later source packages were generated using
Autoconf 2.71 which no longer defines HAVE_MEMORY_H. So the code
being removed is no longer used anyway.
Lasse Collin [Fri, 6 Jan 2023 20:53:38 +0000 (22:53 +0200)]
Tests: test_filter_flags: Clean up minor issues.
Here are the list of the most significant issues addressed:
- Avoid using internal common.h header. It's not good to copy the
constants like this but common.h cannot be included for use outside
of liblzma. This is the quickest thing to do that could be fixed later.
- Omit the INIT_FILTER macro. Initialization should be done with just
regular designated initializers.
- Use start_offset = 257 for BCJ tests. It demonstrates that Filter
Flags encoder and decoder don't validate the options thoroughly.
257 is valid only for the x86 filter. This is a bit silly but
not a significant problem in practice because the encoder and
decoder initialization functions will catch bad alignment still.
Perhaps this should be fixed but it's not urgent and doesn't need
to be in 5.4.x.
- Various tweaks to comments such as filter id -> Filter ID
Lasse Collin [Sat, 7 Jan 2023 22:32:29 +0000 (00:32 +0200)]
Tests: tuktest.h: Support tuktest_malloc(0).
It's not needed in XZ Utils at least for now. It's good to support
it still because if such use is needed later, it wouldn't be
caught on GNU/Linux since malloc(0) from glibc returns non-NULL.
Jia Tan [Thu, 5 Jan 2023 12:57:25 +0000 (20:57 +0800)]
liblzma: Remove common.h include from common/index.h.
common/index.h is needed by liblzma internally and tests. common.h will
include and define many things that are not needed by the tests.
Also, this prevents include order problems because both common.h and
lzma.h define LZMA_API. On most platforms it results only in a warning
but on Windows it would break the build as the definition in common.h
must be used only for building liblzma itself.
Jia Tan [Wed, 4 Jan 2023 15:58:58 +0000 (23:58 +0800)]
Tests: Replace non portable shell parameter expansion
The shell parameter expansion using # and ## is not supported in
Solaris 10 Bourne shell (/bin/sh). Even though this is POSIX, it is not fully
portable, so we should avoid it.
Jia Tan [Mon, 2 Jan 2023 14:33:48 +0000 (22:33 +0800)]
Build: Only define HAVE_PROGRAM_INVOCATION_NAME if it is set to 1.
HAVE_DECL_PROGRAM_INVOCATION_NAME is renamed to
HAVE_PROGRAM_INVOCATION_NAME. Previously,
HAVE_DECL_PROGRAM_INVOCATION_NAME was always set when
building with autotools. CMake would only set this when it was 1, and the
dos/config.h did not define it. The new macro definition is consistent
across build systems.
Jia Tan [Wed, 28 Dec 2022 17:15:27 +0000 (01:15 +0800)]
liblzma: Includes sys/time.h conditionally in mythread
Previously, <sys/time.h> was always included, even if mythread only used
clock_gettime. <time.h> is still needed even if clock_gettime is not used
though because struct timespec is needed for mythread_condtime.
Jia Tan [Wed, 28 Dec 2022 17:10:53 +0000 (01:10 +0800)]
Build: No longer require HAVE_DECL_CLOCK_MONOTONIC to always be set.
Previously, if threading was enabled HAVE_DECL_CLOCK_MONOTONIC would always
be set to 0 or 1. However, this macro was needed in xz so if xz was not
built with threading and HAVE_DECL_CLOCK_MONOTONIC was not defined but
HAVE_CLOCK_GETTIME was, it caused a warning during build. Now,
HAVE_DECL_CLOCK_MONOTONIC has been renamed to HAVE_CLOCK_MONOTONIC and
will only be set if it is 1.
Using return_if_error on lzma_lzma_lclppb_encode was improper because
return_if_error is expecting an lzma_ret value, but
lzma_lzma_lclppb_encode returns a boolean. This could result in
lzma_microlzma_encoder, which would be misleading for applications.
Lasse Collin [Thu, 8 Dec 2022 17:18:16 +0000 (19:18 +0200)]
xz: Don't modify argv[].
The code that parses --memlimit options and --block-list modified
the argv[] when parsing the option string from optarg. This was
visible in "ps auxf" and such and could be confusing. I didn't
understand it back in the day when I wrote that code. Now a copy
is allocated when modifiable strings are needed.
Lasse Collin [Thu, 8 Dec 2022 15:30:09 +0000 (17:30 +0200)]
liblzma: Check for unexpected NULL pointers in block_header_decode().
The API docs gave an impression that such checks are done
but they actually weren't done. In practice it made little
difference since the calling code has a bug if these are NULL.
Thanks to Jia Tan for the original patch that checked for
block->filters == NULL.
Lasse Collin [Thu, 1 Dec 2022 18:04:17 +0000 (20:04 +0200)]
liblzma: Use __has_attribute(__symver__) to fix Clang detection.
If someone sets up Clang to define __GNUC__ to 10 or greater
then symvers broke. __has_attribute is supported by such GCC
and Clang versions that don't support __symver__ so this should
be much better and simpler way to detect if __symver__ is
actually supported.
Lasse Collin [Thu, 1 Dec 2022 16:51:52 +0000 (18:51 +0200)]
liblzma: Omit zero-skipping from ARM64 filter.
It has some complicated downsides and its usefulness is more limited
than I originally thought. So this change is bad for certain very
specific situations but a generic solution that works for other
filters (and is otherwise better too) is planned anyway. And this
way 7-Zip can use the same compatible filter for the .7z format.
This is still marked as experimental with a new temporary Filter ID.