bpo-40052: Fix alignment issue in PyVectorcall_Function() #23999
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In file included from /usr/include/python3.8/Python.h:147:
In file included from /usr/include/python3.8/abstract.h:837:
/usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *'
(aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)')
increases required alignment from 1 to 8 [-Werror,-Wcast-align]
ptr = (vectorcallfunc*)(((char *)callable) + offset);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Co-Authored-By: Andreas Schneider <[email protected]>
Co-Authored-By: Antoine Pitrou <[email protected]>
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Author
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This supersedes (and is based on) #19133 |
pitrou
approved these changes
Dec 29, 2020
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@vstinner Is it ok with you? |
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LGTM. memcpy() is a safe solution to solve alignment issues ;-) Note: PR #19133 looks wrong to me. |
vstinner
approved these changes
Dec 29, 2020
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Thanks @encukou for the PR 🌮🎉.. I'm working now to backport this PR to: 3.8, 3.9. |
miss-islington
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Dec 29, 2020
…3999) ``` In file included from /usr/include/python3.8/Python.h:147: In file included from /usr/include/python3.8/abstract.h:837: /usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *' (aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)') increases required alignment from 1 to 8 [-Werror,-Wcast-align] ptr = (vectorcallfunc*)(((char *)callable) + offset); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ``` Co-Authored-By: Andreas Schneider <[email protected]> Co-Authored-By: Antoine Pitrou <[email protected]> (cherry picked from commit 056c082) Co-authored-by: Petr Viktorin <[email protected]>
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GH-24005 is a backport of this pull request to the 3.9 branch. |
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Sorry, @encukou, I could not cleanly backport this to |
encukou
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…3999) (GH-24005) ``` In file included from /usr/include/python3.8/Python.h:147: In file included from /usr/include/python3.8/abstract.h:837: /usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *' (aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)') increases required alignment from 1 to 8 [-Werror,-Wcast-align] ptr = (vectorcallfunc*)(((char *)callable) + offset); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ``` Co-authored-by: Petr Viktorin <[email protected]> Co-Authored-By: Andreas Schneider <[email protected]> Co-Authored-By: Antoine Pitrou <[email protected]> (cherry picked from commit 056c082)
encukou
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…onGH-23999) ``` In file included from /usr/include/python3.8/Python.h:147: In file included from /usr/include/python3.8/abstract.h:837: /usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *' (aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)') increases required alignment from 1 to 8 [-Werror,-Wcast-align] ptr = (vectorcallfunc*)(((char *)callable) + offset); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ``` Co-Authored-By: Andreas Schneider <[email protected]> Co-Authored-By: Antoine Pitrou <[email protected]>. (cherry picked from commit 056c082) Co-authored-by: Petr Viktorin <[email protected]>
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GH-24120 is a backport of this pull request to the 3.8 branch. |
encukou
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Jan 12, 2021
…3999) (GH-24120) Co-Authored-By: Andreas Schneider <[email protected]> Co-Authored-By: Antoine Pitrou <[email protected]>. Co-authored-by: Petr Viktorin <[email protected]> (cherry picked from commit 056c082) https://bugs.python.org/issue40052
adorilson
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Mar 13, 2021
…3999) ``` In file included from /usr/include/python3.8/Python.h:147: In file included from /usr/include/python3.8/abstract.h:837: /usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *' (aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)') increases required alignment from 1 to 8 [-Werror,-Wcast-align] ptr = (vectorcallfunc*)(((char *)callable) + offset); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ``` Co-Authored-By: Andreas Schneider <[email protected]> Co-Authored-By: Antoine Pitrou <[email protected]>
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Co-Authored-By: Andreas Schneider [email protected]
Co-Authored-By: Antoine Pitrou [email protected]
https://bugs.python.org/issue40052
Automerge-Triggered-By: GH:pitrou