cpython/Misc
Sam Gross 1bfb58cf2f
[3.12] gh-122527: Fix a crash on deallocation of PyStructSequence (GH-122577) (#122626)
The `PyStructSequence` destructor would crash if it was deallocated after
its type's dictionary was cleared by the GC, because it couldn't compute
the "real size" of the instance. This could occur with relatively
straightforward code in the free-threaded build or with a reference
cycle involving the type in the default build, due to differing orders
in which `tp_clear()` was called.

Account for the non-sequence fields in `tp_basicsize` and use that,
along with `Py_SIZE()`, to compute the "real" size of a
`PyStructSequence` in the dealloc function. This avoids the accesses to
the type's dictionary during dealloc, which were unsafe.
(cherry picked from commit 4b63cd170e)
2024-09-06 15:46:56 +02:00
..
NEWS.d [3.12] gh-122527: Fix a crash on deallocation of PyStructSequence (GH-122577) (#122626) 2024-09-06 15:46:56 +02:00
rhel7 gh-95957: Add instructions for Tcl/Tk and OpenSSL on RHEL/CentOS 7 (#95964) 2022-08-16 13:44:02 +02:00
ACKS gh-100256: Skip inaccessible registry keys in the WinAPI mimetype implementation (GH-122047) 2024-08-07 19:39:51 +01:00
coverity_model.c
externals.spdx.json [3.12] gh-123418: Update OpenSSL to 3.0.15 on Windows (GH-123691) 2024-09-04 16:21:37 -05:00
HISTORY [3.12] gh-123492: Remove unnecessary :func: parentheses (gh-123493) (#123512) 2024-08-30 20:09:55 +03:00
indent.pro
Porting
python-config.in
python-config.sh.in
python-embed.pc.in
python.man [3.12] gh-121101: Document -Wall option (an alias for -Walways) (GH-121102) (#121147) 2024-06-29 13:57:22 +05:30
python.pc.in gh-99942: python.pc on android/cygwin should link to libpython per configure.ac (GH-100356) 2023-02-21 17:21:24 -08:00
README gh-102809: Remove gdbinit mention in Misc/README (#103269) 2023-04-08 00:04:23 -07:00
README.AIX bpo-42087: Remove support for AIX 5.3 and below (GH-22830) 2020-11-16 16:16:10 +01:00
README.coverity
README.valgrind closes docs: remove references to Py_USING_MEMORY_DEBUGGER (GH-30284) 2021-12-29 16:20:42 -06:00
sbom.spdx.json [3.12] gh-123678: Upgrade libexpat 2.6.3 (GH-123689) (GH-123708) 2024-09-04 20:19:33 +00:00
SpecialBuilds.txt gh-78607: Replace __ltrace__ with __lltrace__ (GH-91619) 2022-04-16 18:57:00 -04:00
stable_abi.toml [3.12] gh-102304: Fix Py_INCREF() stable ABI in debug mode (#104763) (#105352) 2023-06-06 16:22:04 +02:00
svnmap.txt
valgrind-python.supp [3.12] gh-121096: Ignore dlopen() leaks in Valgrind suppression file (GH-121097) (#121123) 2024-06-28 11:17:30 +00:00
vgrindefs

Python Misc subdirectory
========================

This directory contains files that wouldn't fit in elsewhere.  Some
documents are only of historic importance.

Files found here
----------------

ACKS                    Acknowledgements
HISTORY                 News from previous releases -- oldest last
indent.pro              GNU indent profile approximating my C style
NEWS                    News for this release (for some meaning of "this")
Porting                 Mini-FAQ on porting to new platforms
python-config.in        Python script template for python-config
python.man              UNIX man page for the python interpreter
python.pc.in            Package configuration info template for pkg-config
README                  The file you're reading now
README.AIX              Information about using Python on AIX
README.coverity         Information about running Coverity's Prevent on Python
README.valgrind         Information for Valgrind users, see valgrind-python.supp
SpecialBuilds.txt       Describes extra symbols you can set for debug builds
svnmap.txt              Map of old SVN revs and branches to hg changeset ids,
                        help history-digging
valgrind-python.supp    Valgrind suppression file, see README.valgrind
vgrindefs               Python configuration for vgrind (a generic pretty printer)