bpo-40052: Fix alignment issue in PyVectorcall_Function() #23999
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
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]>
|
This supersedes (and is based on) #19133 |
pitrou
approved these changes
Dec 29, 2020
|
@vstinner Is it ok with you? |
|
LGTM. memcpy() is a safe solution to solve alignment issues ;-) Note: PR #19133 looks wrong to me. |
vstinner
approved these changes
Dec 29, 2020
|
Thanks @encukou for the PR 🌮🎉.. I'm working now to backport this PR to: 3.8, 3.9. |
miss-islington
pushed a commit
to miss-islington/cpython
that referenced
this pull request
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]>
|
GH-24005 is a backport of this pull request to the 3.9 branch. |
|
Sorry, @encukou, I could not cleanly backport this to |
encukou
added a commit
that referenced
this pull request
Jan 5, 2021
…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
added a commit
to encukou/cpython
that referenced
this pull request
Jan 5, 2021
…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]>
|
GH-24120 is a backport of this pull request to the 3.8 branch. |
encukou
added a commit
that referenced
this pull request
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
pushed a commit
to adorilson/cpython
that referenced
this pull request
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]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Co-Authored-By: Andreas Schneider [email protected]
Co-Authored-By: Antoine Pitrou [email protected]
https://bugs.python.org/issue40052
Automerge-Triggered-By: GH:pitrou