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View Code? Open in Web Editor NEWFaster C implementation of the bitstruct Python library
License: Mozilla Public License 2.0
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Redefined "_POSIX_C_SOURCE" Error
I've ran into the following error when compiling the project from source:
In file included from /tmp/hlappimageci/appdirs/hl1001.AppDir/usr/include/python3.7m/Python.h:8:0,
from cbitstruct/_cbitstruct.c:8:
/tmp/hlappimageci/appdirs/hl1001.AppDir/usr/include/python3.7m/pyconfig.h:1522:0: error: "_POSIX_C_SOURCE" redefined [-Werror]
#define _POSIX_C_SOURCE 200809L
In file included from /usr/include/aarch64-linux-gnu/bits/libc-header-start.h:33:0,
from /usr/include/limits.h:26,
from /usr/lib/gcc/aarch64-linux-gnu/7/include-fixed/limits.h:194,
from /usr/lib/gcc/aarch64-linux-gnu/7/include-fixed/syslimits.h:7,
from /usr/lib/gcc/aarch64-linux-gnu/7/include-fixed/limits.h:34,
from cbitstruct/_cbitstruct.c:1:
/usr/include/features.h:294:0: note: this is the location of the previous definition
# define _POSIX_C_SOURCE 199506L
The error can be resolved by shifting the order of the headers in cbitstruct/_cbitstruct.c, so that #include <Python.h> appears before #include <limits.h>.
limits.h will define _POSIX_C_SOURCE if it is left undefined, but will instead use the pre-defined value if there is one. A quick search about this leads me to believe it's a fairly common occurrence & that re-organizing the headers is the correct solution.
Test cases untested in bitstruct
- partial and shifted bytes
- partial and shifted text
- pack/unpack symmetry
OSX CI
compile error with _PyFloat_Pack2 with 3.11
It seems as if these functions are now private (see python/cpython#91062)
For bitstruct there is eerimoq/bitstruct#26, is something similar needed for cbistruct? If so, I'm happy to supply a PR, but I'm otherwise not that familiar with the C-API.
Without this, I get the following error (on an M1 mac using python 3.11):
Obtaining file:///Users/arun/roots/cbitstruct
Preparing metadata (setup.py) ... done
Installing collected packages: cbitstruct
Attempting uninstall: cbitstruct
Found existing installation: cbitstruct 1.0.7
Can't uninstall 'cbitstruct'. No files were found to uninstall.
Running setup.py develop for cbitstruct
error: subprocess-exited-with-error
× python setup.py develop did not run successfully.
│ exit code: 1
╰─> [31 lines of output]
running develop
/opt/homebrew/lib/python3.11/site-packages/setuptools/command/easy_install.py:144: EasyInstallDeprecationWarning: easy_install command is deprecated. Use build and pip and other standards-based tools.
warnings.warn(
/opt/homebrew/lib/python3.11/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
warnings.warn(
running egg_info
writing cbitstruct.egg-info/PKG-INFO
writing dependency_links to cbitstruct.egg-info/dependency_links.txt
writing top-level names to cbitstruct.egg-info/top_level.txt
reading manifest template 'MANIFEST.in'
adding license file 'LICENSE.md'
writing manifest file 'cbitstruct.egg-info/SOURCES.txt'
running build_ext
building 'cbitstruct._cbitstruct' extension
clang -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX13.sdk -Icbitstruct/ -I/opt/homebrew/opt/[email protected]/Frameworks/Python.framework/Versions/3.11/include/python3.11 -c cbitstruct/_cbitstruct.c -o build/temp.macosx-13-arm64-cpython-311/cbitstruct/_cbitstruct.o -std=c11 -Wall -Werror -O3
cbitstruct/_cbitstruct.c:502:17: error: implicit declaration of function '_PyFloat_Pack2' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
_PyFloat_Pack2(cv, el->raw, PY_LITTLE_ENDIAN);
^
cbitstruct/_cbitstruct.c:502:17: note: did you mean 'PyFloat_Pack2'?
/opt/homebrew/opt/[email protected]/Frameworks/Python.framework/Versions/3.11/include/python3.11/cpython/floatobject.h:15:17: note: 'PyFloat_Pack2' declared here
PyAPI_FUNC(int) PyFloat_Pack2(double x, char *p, int le);
^
cbitstruct/_cbitstruct.c:578:29: error: implicit declaration of function '_PyFloat_Unpack2' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
double cv = _PyFloat_Unpack2(el->raw, PY_LITTLE_ENDIAN);
^
cbitstruct/_cbitstruct.c:578:29: note: did you mean 'PyFloat_Unpack2'?
/opt/homebrew/opt/[email protected]/Frameworks/Python.framework/Versions/3.11/include/python3.11/cpython/floatobject.h:19:20: note: 'PyFloat_Unpack2' declared here
PyAPI_FUNC(double) PyFloat_Unpack2(const char *p, int le);
^
2 errors generated.
error: command '/opt/homebrew/opt/llvm@11/bin/clang' failed with exit code 1
[end of output]
Windows CI
Nice job :P
How much faster then the Python implementation is it? Any drawbacks/limitations?
Support for Python 3.12 on pypi
Hi, first of all thanks for this project!
Since Python 3.12 has been released on Oct. 2nd, it would be great to have compatible wheels available on pypi.
Unfortunately, building from source doesn't seem to work (at least not with a simple pip install cbitstruct).
Minimal failing example (docker)
FROM python:3.12-bookworm
RUN pip install cbitstructWhen running docker build . it fails with following output:
> docker build .
[+] Building 5.6s (5/5) FINISHED
=> [internal] load build definition from Dockerfile 0.1s
=> => transferring dockerfile: 97B 0.0s
=> [internal] load .dockerignore 0.1s
=> => transferring context: 35B 0.0s
=> [internal] load metadata for docker.io/library/python:3.12-bookworm 0.6s
=> CACHED [1/2] FROM docker.io/library/python:3.12-bookworm@sha256:96ee161eee904771a713a7ee01bc0f9a67e01639e45c74df6ffe2535c4af3c72 0.0s
=> ERROR [2/2] RUN pip install cbitstruct 4.9s
------
> [2/2] RUN pip install cbitstruct:
#5 3.047 Collecting cbitstruct
#5 3.149 Downloading cbitstruct-1.0.9.tar.gz (29 kB)
#5 3.169 Preparing metadata (setup.py): started
#5 3.700 Preparing metadata (setup.py): finished with status 'done'
#5 3.704 Building wheels for collected packages: cbitstruct
#5 3.705 Building wheel for cbitstruct (setup.py): started
#5 4.182 Building wheel for cbitstruct (setup.py): finished with status 'error'
#5 4.233 error: subprocess-exited-with-error
#5 4.233
#5 4.233 × python setup.py bdist_wheel did not run successfully.
#5 4.233 │ exit code: 1
#5 4.233 ╰─> [209 lines of output]
#5 4.233 running bdist_wheel
#5 4.233 running build
#5 4.233 running build_py
#5 4.233 creating build
#5 4.233 creating build/lib.linux-x86_64-cpython-312
#5 4.233 creating build/lib.linux-x86_64-cpython-312/cbitstruct
#5 4.233 copying cbitstruct/__init__.py -> build/lib.linux-x86_64-cpython-312/cbitstruct
#5 4.233 creating build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 copying cbitstruct/tests/test_cornercase.py -> build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 copying cbitstruct/tests/test_perf.py -> build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 copying cbitstruct/tests/__init__.py -> build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 copying cbitstruct/tests/test_bitstruct.py -> build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 copying cbitstruct/tests/test_api.py -> build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 copying cbitstruct/tests/test_against_bitstruct.py -> build/lib.linux-x86_64-cpython-312/cbitstruct/tests
#5 4.233 running build_ext
#5 4.233 building 'cbitstruct._cbitstruct' extension
#5 4.233 creating build/temp.linux-x86_64-cpython-312
#5 4.233 creating build/temp.linux-x86_64-cpython-312/cbitstruct
#5 4.233 gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -Icbitstruct/ -I/usr/local/include/python3.12 -c cbitstruct/_cbitstruct.c -o build/temp.linux-x86_64-cpython-312/cbitstruct/_cbitstruct.o -std=c11 -Wall -Werror -O3
#5 4.233 In file included from cbitstruct/_cbitstruct.c:833:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormat___init__’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:22:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 22 | static _PyArg_Parser _parser = {"s:CompiledFormat", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:22:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:22:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:22:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:22:57: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 22 | static _PyArg_Parser _parser = {"s:CompiledFormat", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:22:57: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormat_unpack’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:80:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 80 | static _PyArg_Parser _parser = {"y*:unpack", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:80:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:80:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:80:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:80:50: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 80 | static _PyArg_Parser _parser = {"y*:unpack", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:80:50: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormat_unpack_from’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:116:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 116 | static _PyArg_Parser _parser = {"y*|n:unpack_from", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:116:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:116:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:116:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:116:57: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 116 | static _PyArg_Parser _parser = {"y*|n:unpack_from", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:116:57: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormatDict___init__’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:154:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 154 | static _PyArg_Parser _parser = {"sO:CompiledFormatDict", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:154:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:154:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:154:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:154:62: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 154 | static _PyArg_Parser _parser = {"sO:CompiledFormatDict", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:154:62: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormatDict_pack’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:190:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 190 | static _PyArg_Parser _parser = {"O:pack", _keywords, 0};
#5 4.233 | ^~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:190:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:190:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:190:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:190:47: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 190 | static _PyArg_Parser _parser = {"O:pack", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:190:47: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormatDict_pack_into’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:224:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 224 | static _PyArg_Parser _parser = {"y*nO|$p:pack_into", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:224:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:224:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:224:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:224:58: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 224 | static _PyArg_Parser _parser = {"y*nO|$p:pack_into", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:224:58: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormatDict_unpack’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:265:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 265 | static _PyArg_Parser _parser = {"y*:unpack", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:265:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:265:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:265:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:265:50: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 265 | static _PyArg_Parser _parser = {"y*:unpack", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:265:50: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘CompiledFormatDict_unpack_from’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:303:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 303 | static _PyArg_Parser _parser = {"y*|n:unpack_from", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:303:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:303:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:303:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:303:57: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 303 | static _PyArg_Parser _parser = {"y*|n:unpack_from", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:303:57: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘pack_dict’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:342:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 342 | static _PyArg_Parser _parser = {"sOO:pack_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:342:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:342:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:342:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:342:54: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 342 | static _PyArg_Parser _parser = {"sOO:pack_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:342:54: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘pack_into_dict’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:379:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 379 | static _PyArg_Parser _parser = {"sOy*nO|$p:pack_into_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:379:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:379:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:379:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:379:65: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 379 | static _PyArg_Parser _parser = {"sOy*nO|$p:pack_into_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:379:65: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘unpack’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:419:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 419 | static _PyArg_Parser _parser = {"sy*:unpack", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:419:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:419:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:419:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:419:51: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 419 | static _PyArg_Parser _parser = {"sy*:unpack", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:419:51: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘unpack_from’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:458:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 458 | static _PyArg_Parser _parser = {"sy*|n:unpack_from", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:458:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:458:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:458:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:458:58: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 458 | static _PyArg_Parser _parser = {"sy*|n:unpack_from", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:458:58: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘unpack_dict’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:498:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 498 | static _PyArg_Parser _parser = {"sOy*:unpack_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:498:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:498:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:498:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:498:57: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 498 | static _PyArg_Parser _parser = {"sOy*:unpack_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:498:57: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘unpack_from_dict’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:538:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 538 | static _PyArg_Parser _parser = {"sOy*|n:unpack_from_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:538:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:538:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:538:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:538:64: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 538 | static _PyArg_Parser _parser = {"sOy*|n:unpack_from_dict", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:538:64: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘compile’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:576:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 576 | static _PyArg_Parser _parser = {"s|O:compile", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:576:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:576:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:576:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:576:52: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 576 | static _PyArg_Parser _parser = {"s|O:compile", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:576:52: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘calcsize’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:607:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 607 | static _PyArg_Parser _parser = {"s:calcsize", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:607:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:607:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:607:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:607:51: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 607 | static _PyArg_Parser _parser = {"s:calcsize", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:607:51: note: (near initialization for ‘_parser.format’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h: In function ‘byteswap’:
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:648:37: error: initialization of ‘int’ from ‘char *’ makes integer from pointer without a cast [-Werror=int-conversion]
#5 4.233 648 | static _PyArg_Parser _parser = {"Oy*|n:byteswap", _keywords, 0};
#5 4.233 | ^~~~~~~~~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:648:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:648:37: error: initializer element is not computable at load time
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:648:37: note: (near initialization for ‘_parser.initialized’)
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:648:55: error: initialization of ‘const char *’ from incompatible pointer type ‘const char * const*’ [-Werror=incompatible-pointer-types]
#5 4.233 648 | static _PyArg_Parser _parser = {"Oy*|n:byteswap", _keywords, 0};
#5 4.233 | ^~~~~~~~~
#5 4.233 cbitstruct/clinic/_cbitstruct.c.37.h:648:55: note: (near initialization for ‘_parser.format’)
#5 4.233 cc1: all warnings being treated as errors
#5 4.233 error: command '/usr/bin/gcc' failed with exit code 1
#5 4.233 [end of output]
#5 4.233
#5 4.233 note: This error originates from a subprocess, and is likely not a problem with pip.
#5 4.234 ERROR: Failed building wheel for cbitstruct
#5 4.235 Running setup.py clean for cbitstruct
#5 4.448 Failed to build cbitstruct
#5 4.449 ERROR: Could not build wheels for cbitstruct, which is required to install pyproject.toml-based projects
------
executor failed running [/bin/sh -c pip install cbitstruct]: exit code: 1
Verify API with keyword arguments
One more segfault =)
Found a segfault in version 1.0.2:
cbitstruct.byteswap('\x02\x02', b'z')I'm using pyfuzzer, a fuzz tester I recently implemented, to find all these corner cases. It's actually quite useful =)
Validate big-endian architectures
Segmentation fault when calling pack() without arguments
Hello!
This results in a segmentation fault on my machine:
import cbitstruct
cbitstruct.pack()Segmentation fault when calling pack(0)
Hello again,
this also segfaults. Using version 1.0.1.
import cbitstruct
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