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* gh-89455: Fix an uninitialized bool in exception print context. (#91466)Gregory P. Smith2022-04-141-0/+1
| | | | | | | | | | | | | | | | | | | | | Fix an uninitialized bool in exception print context. `struct exception_print_context.need_close` was uninitialized. Found by oss-fuzz in a test case running under the undefined behavior sanitizer. https://oss-fuzz.com/testcase-detail/6217746058182656 ``` Python/pythonrun.c:1241:28: runtime error: load of value 253, which is not a valid value for type 'bool' #0 0xbf2203 in print_chained cpython3/Python/pythonrun.c:1241:28 #1 0xbea4bb in print_exception_cause_and_context cpython3/Python/pythonrun.c:1320:19 #2 0xbea4bb in print_exception_recursive cpython3/Python/pythonrun.c:1470:13 #3 0xbe9e39 in _PyErr_Display cpython3/Python/pythonrun.c:1517:9 ``` Pretty obvious what the ommission was upon code inspection.
* Fill holes in internal compiler structs (#91458)L. A. F. Pereira2022-04-131-18/+18
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* bpo-45995: add "z" format specifer to coerce negative 0 to zero (GH-30049)John Belmonte2022-04-113-2/+49
| | | | | | | | Add "z" format specifier to coerce negative 0 to zero. See https://github.com/python/cpython/issues/90153 (originally https://bugs.python.org/issue45995) for discussion. This covers `str.format()` and f-strings. Old-style string interpolation is not supported. Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* bpo-47120: make POP_JUMP_IF_TRUE/FALSE/NONE/NOT_NONE relative (GH-32400)Irit Katriel2022-04-114-75/+225
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* Fix some typos in comments (GH-32422)jonasdlindner2022-04-091-1/+1
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* bpo-47000: Add `locale.getencoding()` (GH-32068)Inada Naoki2022-04-092-10/+16
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* bpo-47260: Fix os.closerange() potentially being a no-op in a seccomp ↵Alexey Izbyshev2022-04-081-4/+5
| | | | | | | | | | | | | | | | | | sandbox (GH-32418) _Py_closerange() currently assumes that close_range() closes all file descriptors even if it returns an error (other than ENOSYS). This assumption can be wrong on Linux if a seccomp sandbox denies the underlying syscall, pretending that it returns EPERM or EACCES. In this case _Py_closerange() won't close any descriptors at all, which in the worst case can be a security issue. Fix this by falling back to other methods in case of any close_range() error. Note that fallbacks will not be triggered on any problems with closing individual file descriptors because close_range() is documented to ignore such errors on both Linux[1] and FreeBSD[2]. [1] https://man7.org/linux/man-pages/man2/close_range.2.html [2] https://www.freebsd.org/cgi/man.cgi?query=close_range&sektion=2
* bpo-47177: Replace `f_lasti` with `prev_instr` (GH-32208)Brandt Bucher2022-04-073-37/+47
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* bpo-35134: Remove the Include/code.h header file (GH-32385)Victor Stinner2022-04-075-5/+0
| | | | | | Remove the Include/code.h header file. C extensions should only include the main <Python.h> header file. Python.h includes directly Include/cpython/code.h instead.
* bpo-47009: Fix assert on big endian (GH-32332)Christian Heimes2022-04-051-1/+1
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* bpo-47120: make JUMP_NO_INTERRUPT relative (GH-32221)Irit Katriel2022-04-053-23/+32
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* bpo-47186: Replace JUMP_IF_NOT_EG_MATCH by CHECK_EG_MATCH + jump (GH-32309)Irit Katriel2022-04-053-28/+32
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* bpo-47009: Let PRECALL_NO_KW_LIST_APPEND do its own POP_TOP (GH-32239)Dennis Sweeney2022-04-052-5/+8
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* bpo-47000: Make `io.text_encoding()` respects UTF-8 mode (GH-32003)Inada Naoki2022-04-041-1/+4
| | | Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>
* bpo-47176: Interrupt handling for wasm32-emscripten builds without pthreads ↵Hood Chatham2022-04-032-0/+58
| | | | | | (GH-32209) Co-authored-by: Christian Heimes <christian@python.org> Co-authored-by: Brett Cannon <brett@python.org>
* bpo-47172: Compiler enhancements (GH-32200)Irit Katriel2022-04-011-36/+41
| | | | | | | | * Make virtual opcodes negative. * Make is_jump detect only actual jumps. * Use is_block_push for the exception block setup opcodes.
* bpo-47186: Replace JUMP_IF_NOT_EXC_MATCH by CHECK_EXC_MATCH + jump (GH-32231)Irit Katriel2022-04-013-15/+15
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* bpo-47009: Streamline list.append for the common case (GH-31864)Dennis Sweeney2022-04-011-9/+4
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* bpo-47120: Replace the JUMP_ABSOLUTE opcode by the relative JUMP_BACKWARD ↵Irit Katriel2022-03-314-85/+104
| | | | (GH-32115)
* bpo-47164: Add _PyCFunction_CAST() macro (GH-32192)Victor Stinner2022-03-316-36/+36
| | | Use the macro in C files of the Python/ directory.
* bpo-47164: Add _PyASCIIObject_CAST() macro (GH-32191)Victor Stinner2022-03-311-6/+6
| | | | | | | | | | | | Add macros to cast objects to PyASCIIObject*, PyCompactUnicodeObject* and PyUnicodeObject*: _PyASCIIObject_CAST(), _PyCompactUnicodeObject_CAST() and _PyUnicodeObject_CAST(). Using these new macros make the code more readable and check their argument with: assert(PyUnicode_Check(op)). Remove redundant assert(PyUnicode_Check(op)) in macros using directly or indirectly these new CAST macros. Replacing existing casts with these macros.
* bpo-47162: Add call trampoline to mitigate bad fpcasts on Emscripten (GH-32189)Christian Heimes2022-03-303-6/+20
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* Merge deoptimization blocks in interpreter (GH-32155)Mark Shannon2022-03-302-36/+26
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* bpo-46864: Suppress even more ob_shash deprecation warnings (GH-32176)Christian Heimes2022-03-301-0/+5
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* bpo-47053: Refactor BINARY_OP_INPLACE_ADD_UNICODE (GH-32122)Dennis Sweeney2022-03-291-14/+18
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* bpo-47127: Specialize calls for fastcall c methods with keywords (GH-32125)Kumar Aditya2022-03-273-11/+47
| | | | * add PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS
* bpo-43224: Implement PEP 646 grammar changes (GH-31018)Matthew Rahtz2022-03-262-14/+13
| | | Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
* bpo-47053: Reduce deoptimization in BINARY_OP_INPLACE_ADD_UNICODE (GH-31318)Dennis Sweeney2022-03-252-6/+9
| | | | | * Don't deopt if refcounts are too big * Detect more at specialization time
* bpo-42197: Don't create `f_locals` dictionary unless we actually need it. ↵Mark Shannon2022-03-251-3/+7
| | | | | | | | | | | (GH-32055) * `PyFrame_FastToLocalsWithError` and `PyFrame_LocalsToFast` are no longer called during profile and tracing. (Contributed by Fabio Zadrozny) * Make accesses to a frame's `f_locals` safe from C code, not relying on calls to `PyFrame_FastToLocals` or `PyFrame_LocalsToFast`. * Document new `PyFrame_GetLocals` C-API function.
* bpo-46841: remove no-longer-used macro UPDATE_PREV_INSTR_OPARG (GH-32100)Irit Katriel2022-03-241-2/+0
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* bpo-46864: Suppress deprecation warnings for ob_shash. (GH-32042)Inada Naoki2022-03-231-1/+4
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* bpo-43166: Disable ceval.c optimizations for Windows debug builds (GH-32023)neonene2022-03-231-4/+0
| | | Also increases the stack allocation when run with `python_d.exe` to account for the extra stack checks that are added.
* bpo-47045: Remove `f_state` field (GH-31963)Mark Shannon2022-03-222-96/+104
| | | | | * Remove the f_state field from _PyInterpreterFrame * Make ownership of the frame explicit, replacing the is_generator field with an owner field.
* bpo-46841: Quicken code in-place (GH-31888)Brandt Bucher2022-03-215-150/+75
| | | | | | | | | | | | | | | | | | | * Moves the bytecode to the end of the corresponding PyCodeObject, and quickens it in-place. * Removes the almost-always-unused co_varnames, co_freevars, and co_cellvars member caches * _PyOpcode_Deopt is a new mapping from all opcodes to their un-quickened forms. * _PyOpcode_InlineCacheEntries is renamed to _PyOpcode_Caches * _Py_IncrementCountAndMaybeQuicken is renamed to _PyCode_Warmup * _Py_Quicken is renamed to _PyCode_Quicken * _co_quickened is renamed to _co_code_adaptive (and is now a read-only memoryview). * Do not emit unused nonzero opargs anymore in the compiler.
* bpo-46850: Remove _PyEval_CallTracing() function (GH-32019)Victor Stinner2022-03-211-4/+7
| | | | Remove the private undocumented function _PyEval_CallTracing() from the C API. Call the public sys.call_tracing() function instead.
* bpo-46850: Remove _PyEval_GetCoroutineOriginTrackingDepth() (GH-32018)Victor Stinner2022-03-212-8/+11
| | | | | | | | | | | | | | | Remove the private undocumented function _PyEval_GetCoroutineOriginTrackingDepth() from the C API. Call the public sys.get_coroutine_origin_tracking_depth() function instead. Change the internal function _PyEval_SetCoroutineOriginTrackingDepth(): * Remove the 'tstate' parameter; * Add return value and raises an exception if depth is negative; * No longer export the function: call the public sys.set_coroutine_origin_tracking_depth() function instead. Uniformize also function declarations in pycore_ceval.h.
* bpo-46850: Remove _PyEval_SetAsyncGenFinalizer() (GH-32017)Victor Stinner2022-03-211-1/+1
| | | | | | | | | | | Remove the following private undocumented functions from the C API: * _PyEval_GetAsyncGenFirstiter() * _PyEval_GetAsyncGenFinalizer() * _PyEval_SetAsyncGenFirstiter() * _PyEval_SetAsyncGenFinalizer() Call the public sys.get_asyncgen_hooks() and sys.set_asyncgen_hooks() functions instead.
* bpo-45786: Remove _PyFrame_Fini() and _PyFrame_DebugMallocStats() (GH-31874)Victor Stinner2022-03-181-2/+0
| | | | Remove private empty _PyFrame_Fini() and _PyFrame_DebugMallocStats() functions.
* Use low bit of LOAD_GLOBAL's oparg to indicate whether it should push an ↵Mark Shannon2022-03-172-7/+26
| | | | additional NULL. (GH-31933)
* bpo-46841: Don't scan backwards in bytecode (GH-31901)Mark Shannon2022-03-161-13/+7
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* bpo-45923: Decouple suspension of tracing from tracing flag. (GH-31908)Mark Shannon2022-03-152-33/+28
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* bpo-46920: Remove code that has explainers why it was disabled (GH-31813)Oleg Iarygin2022-03-141-6/+0
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* bpo-46920: Remove disabled debug code added decades ago and likely ↵Oleg Iarygin2022-03-141-18/+0
| | | | unnecessary (GH-31812)
* bpo-46987: Remove _PySys_GetObjectId / _PySys_GetObjectId (GH-31835)Dong-hee Na2022-03-141-36/+0
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* bpo-46841: Add a _Py_SET_OPCODE macro (GH-31780)Brandt Bucher2022-03-122-81/+66
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* bpo-46906: Add PyFloat_Pack8() to the C API (GH-31657)Victor Stinner2022-03-111-5/+4
| | | | | | | | | | | | | | | | | | | | | | Add new functions to pack and unpack C double (serialize and deserialize): * PyFloat_Pack2(), PyFloat_Pack4(), PyFloat_Pack8() * PyFloat_Unpack2(), PyFloat_Unpack4(), PyFloat_Unpack8() Document these functions and add unit tests. Rename private functions and move them from the internal C API to the public C API: * _PyFloat_Pack2() => PyFloat_Pack2() * _PyFloat_Pack4() => PyFloat_Pack4() * _PyFloat_Pack8() => PyFloat_Pack8() * _PyFloat_Unpack2() => PyFloat_Unpack2() * _PyFloat_Unpack4() => PyFloat_Unpack4() * _PyFloat_Unpack8() => PyFloat_Unpack8() Replace the "unsigned char*" type with "char*" which is more common and easy to use.
* Use FASTCALL for __import__ (GH-31752)Kumar Aditya2022-03-112-28/+110
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* Update adaptive.md for inline caching (GH-31817)Mark Shannon2022-03-111-9/+20
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* bpo-46841: Don't use an oparg counter for `STORE_SUBSCR` (GH-31742)Brandt Bucher2022-03-082-27/+16
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* bpo-40059: Add tomllib (PEP-680) (GH-31498)Taneli Hukkinen2022-03-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new standard library module, `tomllib`, for parsing TOML. The implementation is based on Tomli (https://github.com/hukkin/tomli). ## Steps taken (converting `tomli` to `tomllib`) - Move everything in `tomli:src/tomli` to `Lib/tomllib`. Exclude `py.typed`. - Remove `__version__ = ...` line from `Lib/tomllib/__init__.py` - Move everything in `tomli:tests` to `Lib/test/test_tomllib`. Exclude the following test data dirs recursively: - `tomli:tests/data/invalid/_external/` - `tomli:tests/data/valid/_external/` - Create `Lib/test/test_tomllib/__main__.py`: ```python import unittest from . import load_tests unittest.main() ``` - Add the following to `Lib/test/test_tomllib/__init__.py`: ```python import os from test.support import load_package_tests def load_tests(*args): return load_package_tests(os.path.dirname(__file__), *args) ``` Also change `import tomli as tomllib` to `import tomllib`. - In `cpython/Lib/tomllib/_parser.py` replace `__fp` with `fp` and `__s` with `s`. Add the `/` to `load` and `loads` function signatures. - Run `make regen-stdlib-module-names` - Create `Doc/library/tomllib.rst` and reference it in `Doc/library/fileformats.rst`
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