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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Python 3.13: compile error on Ubuntu 20.04","articleBody":"Impossible to build msgpack on python 3.13 because of what looks like an deprecation warning\r\n\r\n```\r\n  × Building wheel for msgpack (pyproject.toml) did not run successfully.\r\n  │ exit code: 1\r\n  ╰─\u003e [45 lines of output]\r\n      running bdist_wheel\r\n      running build\r\n      running build_py\r\n      creating build\r\n      creating build/lib.linux-x86_64-cpython-313\r\n      creating build/lib.linux-x86_64-cpython-313/msgpack\r\n      copying msgpack/fallback.py -\u003e build/lib.linux-x86_64-cpython-313/msgpack\r\n      copying msgpack/__init__.py -\u003e build/lib.linux-x86_64-cpython-313/msgpack\r\n      copying msgpack/exceptions.py -\u003e build/lib.linux-x86_64-cpython-313/msgpack\r\n      copying msgpack/ext.py -\u003e build/lib.linux-x86_64-cpython-313/msgpack\r\n      running build_ext\r\n      building 'msgpack._cmsgpack' extension\r\n      creating build/temp.linux-x86_64-cpython-313\r\n      creating build/temp.linux-x86_64-cpython-313/msgpack\r\n      gcc -pthread -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -I. -I/home/runner/work/pydoctor/pydoctor/.tox/test/include -I/opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13 -c msgpack/_cmsgpack.cpp -o build/temp.linux-x86_64-cpython-313/msgpack/_cmsgpack.o\r\n      msgpack/_cmsgpack.cpp:1366:72: warning: ‘Py_UNICODE’ is deprecated [-Wdeprecated-declarations]\r\n       1366 | static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u)\r\n            |                                                                        ^\r\n      In file included from /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/unicodeobject.h:1014,\r\n                       from /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/Python.h:65,\r\n                       from msgpack/_cmsgpack.cpp:16:\r\n      /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/cpython/unicodeobject.h:10:37: note: declared here\r\n         10 | Py_DEPRECATED(3.13) typedef wchar_t Py_UNICODE;\r\n            |                                     ^~~~~~~~~~\r\n      msgpack/_cmsgpack.cpp: In function ‘size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE*)’:\r\n      msgpack/_cmsgpack.cpp:1368:23: warning: ‘Py_UNICODE’ is deprecated [-Wdeprecated-declarations]\r\n       1368 |     const Py_UNICODE *u_end = u;\r\n            |                       ^~~~~\r\n      In file included from /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/unicodeobject.h:1014,\r\n                       from /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/Python.h:65,\r\n                       from msgpack/_cmsgpack.cpp:16:\r\n      /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/cpython/unicodeobject.h:10:37: note: declared here\r\n         10 | Py_DEPRECATED(3.13) typedef wchar_t Py_UNICODE;\r\n            |                                     ^~~~~~~~~~\r\n      In file included from /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/internal/pycore_code.h:461,\r\n                       from /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/internal/pycore_frame.h:13,\r\n                       from msgpack/_cmsgpack.cpp:22559:\r\n      /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/internal/pycore_backoff.h: In function ‘_Py_BackoffCounter make_backoff_counter(uint16_t, uint16_t)’:\r\n      /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/internal/pycore_backoff.h:47:44: warning: narrowing conversion of ‘backoff’ from ‘uint16_t’ {aka ‘short unsigned int’} to ‘unsigned char:4’ [-Wnarrowing]\r\n         47 |     return (_Py_BackoffCounter){.backoff = backoff, .value = value};\r\n            |                                            ^~~~~~~\r\n      /opt/hostedtoolcache/Python/3.13.0-alpha.6/x64/include/python3.13/internal/pycore_backoff.h:47:67: error: too many initializers for ‘_Py_BackoffCounter’\r\n         47 |     return (_Py_BackoffCounter){.backoff = backoff, .value = value};\r\n            |                                                                   ^\r\n      error: command '/usr/bin/gcc' failed with exit code 1\r\n      [end of output]\r\n```","author":{"url":"https://github.com/tristanlatr","@type":"Person","name":"tristanlatr"},"datePublished":"2024-04-19T15:17:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/593/msgpack-python/issues/593"}