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cpython/Objects
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Petr Viktorin 3562ae2540
[3.8] bpo-37879: Suppress subtype_dealloc decref when base type is a C heap type (GH-15323, GH-16004) (GH-15966) 
The instance destructor for a type is responsible for preparing
an instance for deallocation by decrementing the reference counts
of its referents.

If an instance belongs to a heap type, the type object of an instance
has its reference count decremented while for static types, which
are permanently allocated, the type object is unaffected by the
instance destructor.

Previously, the default instance destructor searched the class
hierarchy for an inherited instance destructor and, if present,
would invoke it.

Then, if the instance type is a heap type, it would decrement the
reference count of that heap type.  However, this could result in the
premature destruction of a type because the inherited instance
destructor should have already decremented the reference count
of the type object.

This change avoids the premature destruction of the type object
by suppressing the decrement of its reference count when an
inherited, non-default instance destructor has been invoked.

Finally, an assertion on the Py_SIZE of a type was deleted.  Heap
types have a non zero size, making this into an incorrect assertion.

https://github.com/python/cpython/pull/15323.
(cherry picked from commit ff023ed36e)
Fixup: https://github.com/python/cpython/pull/16004.
(cherry picked from commit 5e9caeec76)

Co-authored-by: Eddie Elizondo <eduardo.elizondorueda@gmail.com>
2019-09-12 10:44:46 +01:00
..
clinic [3.8] bpo-37034: Display argument name on errors with keyword arguments with Argument Clinic. (GH-13593). (GH-15599) 2019-08-29 18:29:59 +03:00
stringlib Doc: Fix typo in fastsearch comments (GH-14608) (GH-15933) 2019-09-11 15:05:49 +02:00
abstract.c bpo-20092. Use __index__ in constructors of int, float and complex. (GH-13108) 2019-06-02 00:05:48 +03:00
accu.c bpo-35081: Move accu.h to Include/internal/pycore_accu.h (GH-10271) 2018-11-01 02:30:36 +01:00
boolobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
bytearrayobject.c [3.8] bpo-37994: Fix silencing all errors if an attribute lookup fails. (GH-15630) (GH-15635) 2019-09-01 14:01:05 +03:00
bytes_methods.c closes bpo-34599: Improve performance of _Py_bytes_capitalize(). (GH-9083) 2018-09-06 21:54:49 -07:00
bytesobject.c Remove unneeded assignment in PyBytes_Concat() (GH-15274) 2019-09-10 10:46:52 -07:00
call.c [3.8] bpo-36974: separate vectorcall functions for each calling convention (GH-13781) (#14782) 2019-07-23 12:39:51 +02:00
capsule.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
cellobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
classobject.c bpo-37233: optimize method_vectorcall in case of totalargs == 0 (GH-14550) 2019-07-03 06:06:38 -07:00
codeobject.c bpo-37221: Add PyCode_NewWithPosOnlyArgs to be used internally and set PyCode_New as a compatibility wrapper (GH-13959) (#14505) 2019-07-01 13:29:14 +02:00
complexobject.c bpo-37236: pragma optimize off for _Py_c_quot on Windows arm64 (GH-13983) 2019-06-12 11:27:15 -07:00
descrobject.c [3.8] bpo-37994: Fix silencing all errors if an attribute lookup fails. (GH-15630) (GH-15635) 2019-09-01 14:01:05 +03:00
dict-common.h bpo-33312: Fix clang ubsan out of bounds warnings in dict. (GH-6537) 2018-04-19 22:41:19 -07:00
dictnotes.txt Issue #15055: update dictnotes.txt. Patch by Mark Shannon. 2012-06-24 21:03:45 +02:00
dictobject.c Fix typo in dict object comment (GH-15814) 2019-09-10 03:13:36 -07:00
enumobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
exceptions.c [3.8] bpo-37757: Disallow PEP 572 cases that expose implementation details (GH-15491) 2019-08-26 00:41:47 +10:00
fileobject.c [3.8] bpo-37994: Fix silencing all errors if an attribute lookup fails. (GH-15630) (GH-15635) 2019-09-01 14:01:05 +03:00
floatobject.c bpo-38096: Clean up the "struct sequence" / "named tuple" docs (GH-15895) (GH-15961) 2019-09-11 19:50:29 -07:00
frameobject.c [3.8] bpo-37830: Fix compilation of break and continue in finally. (GH-15320) (GH-15456) 2019-08-24 13:41:53 +03:00
funcobject.c Revert "bpo-33418: Add tp_clear for function object (GH-8058)" (GH-15826) 2019-09-10 02:57:31 -07:00
genobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
interpreteridobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
iterobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
listobject.c Improve docstring of list.sort (GH-8516) 2019-05-31 21:10:02 -07:00
listsort.txt Fix typos mostly in comments, docs and test names (GH-15209) 2019-08-30 13:42:54 -07:00
lnotab_notes.txt bpo-28810: Update lnotab_notes.txt (#665) 2017-03-14 21:42:09 +02:00
longobject.c bpo-38096: Clean up the "struct sequence" / "named tuple" docs (GH-15895) (GH-15961) 2019-09-11 19:50:29 -07:00
memoryobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
methodobject.c [3.8] bpo-36974: separate vectorcall functions for each calling convention (GH-13781) (#14782) 2019-07-23 12:39:51 +02:00
moduleobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
namespaceobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
object.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
obmalloc.c bpo-37732: Fix GCC warning in _PyObject_Malloc() (GH-15333) (GH-15342) 2019-08-20 13:44:32 +01:00
odictobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
picklebufobject.c bpo-36785: PEP 574 implementation (GH-7076) 2019-05-26 17:10:09 +02:00
rangeobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
README Issue #18093: Factor out the programs that embed the runtime 2014-07-25 21:52:14 +10:00
setobject.c [3.8] bpo-37994: Fix silencing all errors if an attribute lookup fails. (GH-15630) (GH-15635) 2019-09-01 14:01:05 +03:00
sliceobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
structseq.c Call PyObject_GC_UnTrack in structseq dealloc (GH-13751) 2019-06-02 21:52:49 +01:00
tupleobject.c bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464) 2019-05-30 19:13:39 -07:00
typeobject.c [3.8] bpo-37879: Suppress subtype_dealloc decref when base type is a C heap type (GH-15323, GH-16004) (GH-15966) 2019-09-12 10:44:46 +01:00
typeslots.inc add Py_tp_finalize slot (closes #24345) 2015-06-01 10:12:48 -05:00
typeslots.py Issue #26662: Set PYTHON_FOR_GEN in configure 2016-07-26 12:48:08 +02:00
unicodectype.c Removed unintentional trailing spaces in non-external and non-generated C files. 2015-03-18 21:53:15 +02:00
unicodeobject.c Fix unused variable and signed/unsigned warnings (GH-15537) (GH-15551) 2019-08-27 10:13:52 -07:00
unicodetype_db.h closes bpo-36861: Update Unicode database to 12.1.0. (GH-13214) 2019-05-08 20:59:35 -07:00
weakrefobject.c [3.8] bpo-37994: Fix silencing all errors if an attribute lookup fails. (GH-15630) (GH-15635) 2019-09-01 14:01:05 +03:00

README 

Source files for various builtin objects