Dropping values inside with_type_lock can trigger weakref callbacks,
which may access attributes (LOAD_ATTR specialization) and re-acquire
the non-reentrant type mutex, causing deadlock.
Return old values from lock closures so they drop after lock release.
- Extract datastack_frame_size_bytes_for_code as free function, use it
to compute init_cleanup stack bytes instead of hardcoded constant
- Add monitoring_disabled_for_code to skip instrumentation for
synthetic init_cleanup code object in RESUME and execute_instrumented
- Add is_trace_event guard so profile-only events skip trace_func dispatch
- Reformat core.rs (rustfmt)
* Detect list mutation during sort even when list length is unchanged
* Use mutation counter instead of capacity check for sort mutation detection
The capacity heuristic missed mutations when `clear()` reset capacity to
0 via `mem::take`. An AtomicU32 counter on PyList, incremented in
`borrow_vec_mut()`, reliably detects all mutations during sort.
* Hold write guard during sort mutation counter reads
* Fix list mutation counter race in `borrow_vec_mut`
* Fix allow_threads and EINTR handling
- Wrap Windows SemLock acquire wait with allow_threads
- Retry nanosleep on EINTR with remaining time instead of
returning early
- Remove expectedFailure for test_sleep in _test_eintr.py
* Remove expectedFailureIfWindows for testHashComparisonOfMethods
Add vectorcall fast paths for dict, list, set, int, float, str,
bool, tuple, frozenset. Clear vectorcall when __init__/__new__ is
overridden in Python. Prevent constructor vectorcall inheritance
to heap subclasses. Fix stat_result to use struct_sequence_new
with reference-copy for hidden time fields.
- Add CO_NESTED flag (0x10) for nested function scopes
- Emit LOAD_SMALL_INT for integers 0..=255 instead of LOAD_CONST
- Eliminate dead constant expression statements (no side effects)
- Ensure None in co_consts for functions with no other constants
- Add code.__replace__() for copy.replace() support
- Mark test_co_lnotab and test_invalid_bytecode as expectedFailure
* Migrate direct __repr__ definitions to Representable trait
Move legacy #[pymethod] __repr__ to impl Representable for:
- PySSLContext, PySSLSocket (ssl.rs)
- BufferedReader, BufferedWriter, BufferedRandom (_io.rs)
Enable __repr__ guard in derive to prevent future direct definitions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Migrate direct __del__ definition to Destructor trait for PySocket
Move #[pymethod] __del__ to impl Destructor for PySocket.
Preserves ResourceWarning emission and close behavior.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Remove redundant __iter__ pymethods from PyFuture and PyTask
Both types already have impl Iterable, so the direct #[pymethod]
__iter__ definitions were duplicates. Enable __iter__/__next__
guards in derive to prevent future direct definitions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Enable derive guards for __get__/__set__/__delete__ descriptor methods
All concrete types already use GetDescriptor/SetDescriptor traits.
Activate the compile-time guard to prevent future direct definitions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Enable derive guards for AsMapping/AsSequence slot methods
Remove redundant #[pymethod(name = "__len__")] from PyStr
(already provided via AsMapping/AsSequence trait impls).
Enable compile-time guards for __len__, __contains__, __getitem__,
__setitem__, __delitem__ to prevent future direct definitions.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When -O flag removes assert statements, any nested scopes
(generators, comprehensions, lambdas) inside the assert
expression still have symbol tables in the sub_tables list.
Without consuming them, the next_sub_table index gets
misaligned, causing later scopes to use wrong symbol tables.
Walk the skipped assert expression with an AST visitor to
find and consume nested scope symbol tables, keeping the
index aligned with AST traversal order.
* Preserve imaginary zero signs when adding real values to complex numbers
* Refactor complex_add with match expression
* Correct complex real subtract op
* Remove unnecessary vm arugment
Simplify classmethod.__get__ to always create a PyBoundMethod binding
the callable to the class, matching CPython's cm_descr_get which simply
calls PyMethod_New(cm->cm_callable, type).
The previous implementation incorrectly tried to call __get__ on the
wrapped callable, which broke when a bound method was passed to
classmethod() (e.g. classmethod(A().foo)).
Use single-record reading (recv_one_tls_record) for all SSL
reads, not just handshake. This prevents rustls from eagerly
consuming close_notify alongside application data, which left
the TCP buffer empty and caused select()-based servers to miss
readability and time out.
Also fix recv_one_tls_record to return Eof (not WantRead) when
peek returns empty bytes, since empty peek means the peer has
closed the TCP connection.
During STARTTLS handshake, sock_recv(16KB) could consume
application data that arrived alongside handshake records.
The consumed data ended up in rustls's internal buffer where
select() could not detect it, causing asyncore-based servers
to miss readable events and the peer to time out.
Use MSG_PEEK to find the TLS record boundary, then recv()
only one complete record. Remaining data stays in the kernel
TCP buffer, visible to select(). This matches OpenSSL's
default no-read-ahead behaviour.
Fixes flaky test_poplib (TestPOP3_TLSClass) failures.
* gc: add CollectResult, stats fields, get_referrers, and fix count reset
- Add CollectResult struct with collected/uncollectable/candidates/duration
- Add candidates and duration fields to GcStats and gc.get_stats()
- Pass CollectResult to gc.callbacks info dict
- Reset generation counts for all collected generations (0..=N)
- Return 0 for third value in gc.get_threshold() (3.13+)
- Implement gc.get_referrers() by scanning all tracked objects
- Add DEBUG_COLLECTABLE output for collectable objects
- Update test_gc.py to expect candidates/duration in stats
* Update test_gc from v3.14.3
* Update test_gc.py from CPython v3.15.0a5
Taken from v3.15 (not v3.14.3) because get_stats() candidates/duration
fields were added in 3.13+ and the corresponding test assertions only
exist in 3.15.
* Fix gc_state build on wasm32: skip Instant timing
* Add candidates/duration to gc callback info, mark v3.15 test failures
* Fix gc.get_referrers to exclude executing frames, fix Future cancelled exc leak
- get_referrers: skip frame objects on the execution stack, since
they are not GC-tracked in CPython (_PyInterpreterFrame)
- _asyncio Future/Task make_cancelled_error_impl: clear the stored
cancelled exception after returning it, matching the Python
_make_cancelled_error behavior
* Fix gc.get_threshold to return actual gen2 threshold value
* Fix inconsistent GC count reset in early-return paths
Use the same reset_end formula in unreachable-empty early returns
as in the main collection path and collecting-empty path.
* Accept keyword arguments in socket.__init__
Use a FromArgs struct instead of a positional-only tuple so that
family, type, proto, and fileno can be passed as keyword arguments.
* Disable comp_inlined in symbol table to match compiler
The compiler does not yet implement PEP 709 inlined comprehensions
(is_inlined_comprehension_context always returns false), but the
symbol table was marking comprehensions as inlined. This mismatch
could cause comprehension-local symbols to be merged into the parent
scope while the compiler still looks them up in a separate scope.
---------
Co-authored-by: CPython Developers <>
* Fix atexit unraisable exception message format
Match PyErr_FormatUnraisable behavior: use
"Exception ignored in atexit callback {func!r}" as err_msg
and pass None as object instead of the callback function.
* Fix atexit unregister deadlock with reentrant __eq__
Release the lock during equality comparison in unregister so
that __eq__ can safely call atexit.unregister or atexit._clear.
Store callbacks in LIFO order (insert at front) and use
identity-based search after comparison to handle list mutations,
matching atexitmodule.c behavior.
Also pass None as err_msg when func.repr() fails, matching
CPython's PyErr_FormatUnraisable fallback.
