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Upgrade python to 3.11 #33842
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comment:2
It builds. First failure: building cython - we need to wait for a version with 3.11 support - https://github.com/cython/cython/commits/0.29.x New commits:
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Commit: |
comment:3
Cython update in #33864 |
Dependencies: #33864 |
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comment:6
same error as in memory_allocator |
comment:7
Fix is in 23.0.0 (still beta) https://pyzmq.readthedocs.io/en/latest/changelog.html |
comment:8
cypari2:
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comment:10
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comment:15
This should be fixed in FPyLLL upstream. I can cut new packages? |
comment:16
Yes please! |
Branch pushed to git repo; I updated commit sha1. Last 10 new commits:
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comment:19
See #33913 for FP(y)LLL |
comment:139
I still get the
on macOS Big Sur, so I guess it wasn't fixed in #34795 PS: Indeed the offending line is here
PPS: Buildbot locale is:
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comment:140
Thanks for the details. I think we'll have to suppress the warning. I'll also open an issue with docutils |
comment:141
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Changed branch from u/tornaria/py311 to u/mkoeppe/py311 |
New commits:
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comment:144
Replying to Matthias Köppe:
That's now https://sourceforge.net/p/docutils/bugs/464/ |
comment:145
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Changed branch from u/mkoeppe/py311 to |
This is needed for python 3.11 support (sagemath#33842) and to make cypari compatible with current pari version https://groups.google.com/g/sage-devel/c/jqmr6bDjDrk/m/XE2GlB_GBgAJ Necessary follow ups: - make cypari thread safe: see [[https://github.com/sagemath/cypari2/pull/116|cypari2 sagemath#116]] - remove optional build time dependency of cysignals on pari: see [[https://github.com/sagemath/cypari2/pull/130|cypari2 sagemath#130]] URL: https://trac.sagemath.org/33878 Reported by: gh-kliem Ticket author(s): Matthias Koeppe Reviewer(s): Dima Pasechnik
This affects 32 bit architectures, where the representation of python integers changed in cpython 3.11. As part of sagemath#33842, the function `sage.arith.long.integer_check_long_py()` was rewritten to support the new representation. Unfortunately a bug remains for the conversion of integers between 2^60 and 2^63-1. This manifests in lots of doctests failing, but a quick way to demonstrate the issue is sage: ZZ ( int(1152921504606847018) ) # 2^60 + 42 42 The function `integer_check_long_py()` has good unit testing, checking values around the word size, but this range was missing. This commit adds a simple fix and new test cases for a few integers in this range.
This affects 32 bit architectures, where the representation of python integers changed in cpython 3.11, when compiled with gcc12. As part of sagemath#33842, the function `sage.arith.long.integer_check_long_py()` was rewritten to support the new representation. Unfortunately a bug remained that triggers UB for the conversion of integers between 2^60 and 2^63-1. Alas, the undesired behaviour does not happen with gcc10; it only started when I switched to gcc12. The bug manifests in lots of doctests failing, but a quick way to demonstrate the issue is sage: ZZ ( int(1152921504606847018) ) # 2^60 + 42 42 The function `integer_check_long_py()` has good unit testing, checking values around the word size, but this range was missing. This commit adds a simple fix and new test cases for a few integers in this range. Technical explanation: The UB is in the line cdef long lead_3_overflow = (<long>1) << (BITS_IN_LONG - 2 * PyLong_SHIFT) In our case we have `BITS_IN_LONG == 31` and `PyLong_SHIFT == 30` so the computed value is `<long>1 << -29` which is UB and it happens to evaluate to 0 with gcc10 but 8 with gcc12. The solution is to set the value to 0 when `BITS_IN_LONG < 2 * PyLong_SHIFT`.
This affects 32 bit architectures, where the representation of python integers changed in cpython 3.11, when compiled with gcc12. As part of sagemath#33842, the function `sage.arith.long.integer_check_long_py()` was rewritten to support the new representation. Unfortunately a bug remained that triggers UB for the conversion of integers between 2^60 and 2^63-1. Alas, the undesired behaviour does not happen with gcc10; it only started when I switched to gcc12. The bug manifests in lots of doctests failing, but a quick way to demonstrate the issue is sage: ZZ ( int(1152921504606847018) ) # 2^60 + 42 42 The function `integer_check_long_py()` has good unit testing, checking values around the word size, but this range was missing. This commit adds a simple fix and new test cases for a few integers in this range. Technical explanation: The UB is in the line cdef long lead_3_overflow = (<long>1) << (BITS_IN_LONG - 2 * PyLong_SHIFT) In our case we have `BITS_IN_LONG == 31` and `PyLong_SHIFT == 30` so the computed value is `<long>1 << -29` which is UB and it happens to evaluate to 0 with gcc10 but 8 with gcc12. The solution is to set the value to 0 when `BITS_IN_LONG < 2 * PyLong_SHIFT`.
….11, 32 bit) This affects 32 bit architectures, where the representation of python integers changed in cpython 3.11, when compiled with gcc12. As part of sagemath#33842, the function `sage.arith.long.integer_check_long_py()` was rewritten to support the new representation. Unfortunately a bug remained that triggers UB for the conversion of integers between 2^60 and 2^63-1. Alas, the undesired behaviour does not happen with gcc10; it only started when I switched to gcc12. The bug manifests in lots of doctests failing, but a quick way to demonstrate the issue is sage: ZZ ( int(1152921504606847018) ) # 2^60 + 42 42 The function `integer_check_long_py()` has good unit testing, checking values around the word size, but this range was missing. This commit adds a simple fix and new test cases for a few integers in this range. Technical explanation: The UB is in the line cdef long lead_3_overflow = (<long>1) << (BITS_IN_LONG - 2 * PyLong_SHIFT) In our case we have `BITS_IN_LONG == 31` and `PyLong_SHIFT == 30` so the computed value is `<long>1 << -29` which is UB and it happens to evaluate to 0 with gcc10 but 8 with gcc12. The solution is to set the value to 0 when `BITS_IN_LONG < 2 * PyLong_SHIFT`.
…on 3.11, 32 bit, gcc12) This affects 32 bit architectures, where the representation of python integers changed in cpython 3.11, when compiled with gcc12. As part of #33842, the function `sage.arith.long.integer_check_long_py()` was rewritten to support the new representation. Unfortunately a bug remained that triggers UB for the conversion of integers between 2^60 and 2^63-1. Alas, the undesired behaviour does not happen with gcc10; it only started when I switched to gcc12. The bug manifests in lots of doctests failing, but a quick way to demonstrate the issue is sage: ZZ ( int(1152921504606847018) ) # 2^60 + 42 42 The function `integer_check_long_py()` has good unit testing, checking values around the word size, but this range was missing. This commit adds a simple fix and new test cases for a few integers in this range. Technical explanation: The UB is in the line cdef long lead_3_overflow = (<long>1) << (BITS_IN_LONG - 2 * PyLong_SHIFT) In our case we have `BITS_IN_LONG == 31` and `PyLong_SHIFT == 30` so the computed value is `<long>1 << -29` which is UB and it happens to evaluate to 0 with gcc10 but 8 with gcc12. The solution is to set the value to 0 when `BITS_IN_LONG < 2 * PyLong_SHIFT` (which only happens for 32 bit python 3.11) --- TESTING: - With gcc10 the fix in #33842 was extensively tested (e.g. in void-linux/void-packages#41085) and everything seemed ok, that's why we missed this bug. - When using gcc 12, without this PR around 200 tests fail on 32 bit. - With this PR all tests pass as shown in https://github.com/void- linux/void-packages/pull/42048 (I'm actually testing sagemath-9.7 with python 3.11 support backported since that's easier for me, but it shouldn't make a difference). URL: #34997 Reported by: Gonzalo Tornaría Reviewer(s): Gonzalo Tornaría, Matthias Köppe
Issues
Depends on #32423
Depends on #33530
Depends on #33878
Depends on #34795
CC: @kiwifb @antonio-rojas @nbruin @dimpase @jhpalmieri
Component: packages: standard
Author: Gonzalo Tornaría, Matthias Koeppe, Andrey Belgorodski
Branch/Commit:
ac0105e
Reviewer: Matthias Koeppe, Dima Pasechnik
Issue created by migration from https://trac.sagemath.org/ticket/33842
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