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Co-authored-by: concatime <concatime@users.noreply@github.com>
Co-authored-by: Mika Lindqvist <postmaster@raasu.org>
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* armv7 has partial support for unaligned reads, but compiler might use instructions that do not support unaligned accesses
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failed test case.
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Add support for selcting Thread sanitizer.
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* On CygWin, MSYS and MinGW, the static library name should be "z" like on other Unix-like systems
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FFmpeg during the configure stage generates a config.h file with
```
#define HAVE_UNISTD_H 0
```
on windows. Then somewhere in FFmpeg's code there is:
```
#include "config.h" // FFmpeg's config.h
#include <zlib.h>
```
which causes zlib.h to include unistd.h on windows. It is way easier to handle the issue here than in FFmpeg.
Co-authored-by: Mika Lindqvist <postmaster@raasu.org>
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* 32-bit ARM and AArch64 use slightly different macros for CRC32 and NEON feature bits
* 32-bit ARM sometimes requires asm/hwcap.h for AT_HWCAP2
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This allows us to provide useful warning messages from cmake or
configure if the system headers don't provide the necessary flags to do
runtime detection.
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of the test.
Co-authored-by: Vladislav Shchapov <phprus@users.noreply.github.com>
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favor of compilation and link test. #911
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Co-authored-by: zhangn1985 <zhangn1985@users.noreply.github.com>
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Commit bc5915e2dec7 ("Fixed unsigned integer overflow ASAN error when
hash_head > s->strstart.") removed hash_head != 0 checks in fast,
medium and slow deflate, because it improved performance [1].
Unfortunately, the attached test started failing after that.
Apparently, as the comments suggest, the code implicitly relies on
matches with the beginning of the window being skipped. So restore the
check.
[1] https://github.com/zlib-ng/zlib-ng/pull/772#issuecomment-710760300
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6 tests use the same pattern: build a binary linked with zlib-ng and
run it. At the moment this requires 5 near-identical lines of CMake
code, leading to proliferation of copy-paste. Introduce a macro to get
rid of it.
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used to use.
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Two words were swapped in a variable name, leading to empty
libdir and includedir variables in the generated .pc files.
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The attached test fails with "inflate() failed", because the deflate
stream that it produces ends up being corrupted. Bisect points to the
commit e7bb6db09a18 ("Replace hash_bits, hash_size and hash_mask with
defines."), but it's most likely a coincidence.
In any case, the reason is that if we happen to simultaneously exhaust
all the buffers (in, out and bi), we return finish_started without
writing the end of block symbol, which will never happen afterwards.
Fix by adding another check to the tricky condition: if we are in the
middle of a block, return need_more instead of finish_started.
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DFLTCC probe points are never activated when compiling with CMake. This
is because check_include_file() only sets an internal CMake variable,
but not a C define [1].
Fix as the link suggests - by adding an explicit add_definitions.
[1] https://cmake.org/pipermail/cmake/2015-June/060830.html
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The attached test started failing after commit ad89d5131b29 ("Don't
write end of last block when returning finish_started."): either with
"bi_buf not flushed" message in debug builds, or by producing corrupted
output in release builds.
The problem is that we must not return finish_started when bi_buf is
not empty, because the bits there will be lost. Fix by checking that
bi_valid is not 0.
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README.md changes:
- Added a related projects section at the end.
- Added blank line after header where missing.
- Added extra blank line before header to make them easier to spot as plain-text.
- Changed line-length for Contributing section, to make it more readable as plain-text.
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Sync cmake dfltcc descriptions with README.
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flag check.
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Pass -coverage or flag to linker for mingw-gcc.
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rpm-specs on redhat-based distros, making it easier to build corect packages.
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compiler.
This disallows calls to our own exported functions being replaced by LD_PRELOAD, thus
avoiding the potential bugs and allowing the compiler to optimize better.
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included when not used if statically linking. Reduces code size by 4k.
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detection due to variable unused warning combined with -Werror.
In file included from zlib-ng/zlib-ng.h:33,
from zlib-ng/zutil.h:38,
from zlib-ng/adler32.c:7:
zlib-ng/zconf-ng.h:118:18: error: conflicting types for ‘ptrdiff_t’
118 | typedef uint64_t ptrdiff_t;
| ^~~~~~~~~
In file included from zlib-ng/zutil.h:31,
from zlib-ng/adler32.c:7:
stddef.h:143:26: note: previous declaration of ‘ptrdiff_t’ was here
143 | typedef __PTRDIFF_TYPE__ ptrdiff_t;
| ^~~~~~~~~
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