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Brittany Reynoso a6e636148e gh-158820: Add null checks to avoid segfaults with lazy imports at shutdown (GH-158821) 
Destructors can run after finalization has cleared the interpreter's
lazy_modules set and lazy_pending_submodules dict. Declaring or
resolving a lazy import from one of them passed NULL to PySet_Add(),
PySet_Discard() or the pending-submodules lookup.

Treat the bookkeeping as a no-op once the state is gone, as the other
readers of this state already do.
2026-10-09 13:57:05 +02:00
..
clinic
gh-157407: Use _PyUnicode_AsUTF8NoNUL for AC 's' and 'z' converters (#158210)
2026-10-05 17:03:27 +00:00
frozen_modules
gh-97669: Create Tools/build/ directory (#97963)
2022-10-17 12:01:00 +02:00
_contextvars.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
_warnings.c
gh-155952: Fix <unrepresentable> Argument Clinic defaults in several signatures (#155954)
2026-08-21 10:03:51 +01:00
asdl.c
bpo-43244: Remove ast.h, asdl.h, Python-ast.h headers (GH-24933)
2021-03-23 20:47:40 +01:00
asm_trampoline_aarch64.S
gh-149800: Split perf trampoline assembly into per-architecture files (#149894)
2026-05-23 08:03:52 -04:00
asm_trampoline_riscv64.S
gh-149800: Split perf trampoline assembly into per-architecture files (#149894)
2026-05-23 08:03:52 -04:00
asm_trampoline_x86_64.S
gh-149800: Split perf trampoline assembly into per-architecture files (#149894)
2026-05-23 08:03:52 -04:00
assemble.c
gh-158585: Simplify PyBytesWriter_Finish() (#158822)
2026-10-05 04:47:04 +02:00
ast_preprocess.c
gh-152708: Fix AST generation asymmetry for unary positive in match statements (#152712)
2026-09-23 19:56:53 -07:00
ast_unparse.c
gh-143055: Fix crash in AST unparser when unparsing dict comprehension unpacking (#145556)
2026-03-09 10:37:23 -07:00
ast.c
gh-152708: Fix AST generation asymmetry for unary positive in match statements (#152712)
2026-09-23 19:56:53 -07:00
bltinmodule.c
gh-155496: Use Argument Clinic for more functions and methods (GH-158134)
2026-09-27 19:00:22 +03:00
bootstrap_hash.c
gh-153400: Support os.getrandom() on old glibc versions (#155762)
2026-09-10 22:58:27 +02:00
brc.c
gh-157838: Merge biased refcounts on behalf of detached threads (#157839)
2026-09-23 22:08:56 +05:30
bytecodes.c
gh-142349: Simplify lazy import resolution (#158282)
2026-10-01 16:20:45 +00:00
ceval_gil.c
gh-154757: Remove deprecated PyEval_InitThreads() function (#158037)
2026-09-24 10:47:59 +02:00
ceval_macros.h
gh-129752: Don't update adaptive counters when TLBC=0 in free-threading. (gh-155497)
2026-08-13 00:12:39 +00:00
ceval.c
gh-142349: Simplify lazy import resolution (#158282)
2026-10-01 16:20:45 +00:00
ceval.h
gh-142186: Allow all PEP-669 events to be per-code object and disableable (GH-146182)
2026-04-22 09:08:23 +01:00
codecs.c
gh-155742: Use PyBytesWriter in codecs (#155750)
2026-09-01 15:29:26 +02:00
codegen.c
gh-153354: Fix bool conversion in generated __annotate__ (#153360)
2026-10-06 19:34:54 -07:00
compile.c
gh-124697: Represent inlined comprehensions as subscopes in the symbol table (#156819)
2026-09-23 20:31:57 +01:00
condvar.h
gh-104530: Enable native Win32 condition variables by default (GH-104531)
2024-02-02 13:50:51 +00:00
config_common.h
gh-76785: Add PyInterpreterConfig Helpers (gh-117170)
2024-04-02 20:35:52 +00:00
context.c
gh-155519: fix data-race for Context.ctx_vars (#155522)
2026-08-15 11:00:03 +05:30
critical_section.c
gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2
2026-06-16 16:56:37 +00:00
crossinterp_data_lookup.h
gh-147960: Fix memory leak in crossinterp _tuple_shared() on alloc failure (#147961)
2026-04-01 18:34:55 +02:00
crossinterp_exceptions.h
gh-132775: Clean Up Cross-Interpreter Error Handling (gh-135369)
2025-06-13 16:45:21 -06:00
crossinterp.c
gh-151842: Fix crash upon OOM in _interpreters.capture_exception (GH-151843)
2026-06-23 16:31:47 -04:00
dtoa.c
gh-158446: Reject float format precision near INT_MAX (GH-158474)
2026-09-30 05:22:37 +00:00
dup2.c
gh-108765: Python.h no longer includes <unistd.h> (#108783)
2023-09-02 16:50:18 +02:00
dynamic_annotations.c
bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748)
2017-12-12 13:55:04 +02:00
dynload_hpux.c
gh-88402: Add new sysconfig variables on Windows (GH-110049)
2023-10-04 22:50:29 +00:00
dynload_shlib.c
gh-122931: Allow stable abi3 API extensions to include a multiarch tuple in the filename (GH-152461)
2026-07-27 15:05:40 +02:00
dynload_stub.c
gh-88402: Add new sysconfig variables on Windows (GH-110049)
2023-10-04 22:50:29 +00:00
dynload_win.c
gh-152433: Windows: make `dynload_win.c` UWP compatible (#152797)
2026-09-11 15:35:34 +02:00
emscripten_signal.c
GH-108614: Unbreak emscripten build (GH-109132)
2023-09-08 17:54:45 +01:00
emscripten_syscalls.c
gh-156780: Emscripten: add missing EM_JS_DEPS (#156798)
2026-09-08 15:26:48 +08:00
emscripten_trampoline_inner.c
gh-128627: Use __builtin_wasm_test_function_pointer_signature for Emscripten trampoline (#137470)
2025-09-17 15:33:55 +01:00
emscripten_trampoline.c
gh-156780: Emscripten: drop the trampoline's dependence on exports (#157238)
2026-09-11 09:22:36 +08:00
errors.c
gh-158893: Add internal _Py_strerror() function (#158982)
2026-10-07 20:31:27 +00:00
executor_cases.c.h
gh-142349: Simplify lazy import resolution (#158282)
2026-10-01 16:20:45 +00:00
fileutils.c
gh-158893: Add internal _Py_strerror() function (#158982)
2026-10-07 20:31:27 +00:00
flowgraph.c
gh-148817: Fold long lists/sets of constant elements into constant tuples/frozensets (#149016)
2026-08-16 15:38:53 +03:00
frame.c
gh-144446: Fix thread safety of gi_frame, cr_frame and ag_frame in free-threading (#156037)
2026-09-02 23:26:04 +05:30
frozen.c
gh-157361: Implement anext() in Python instead of C (#157362)
2026-09-16 18:58:59 +05:30
frozenmain.c
Use PyConfig_Get() in frozenmain.c (#137421)
2025-08-06 14:33:28 +02:00
future.c
gh-145868: Suggest names on typos in __future__ imports (#154347)
2026-09-24 16:29:48 +00:00
gc_free_threading.c
gh-155811: Add a seqcount to gc_stats to prevent torn reads (#155828)
2026-10-05 01:49:56 +00:00
gc_gil.c
gh-100240: Use a consistent implementation for freelists (#121934)
2024-07-22 12:08:27 -04:00
gc.c
gh-155811: Add a seqcount to gc_stats to prevent torn reads (#155828)
2026-10-05 01:49:56 +00:00
generated_cases.c.h
gh-142349: Simplify lazy import resolution (#158282)
2026-10-01 16:20:45 +00:00
getargs.c
gh-146615: Fix format specifiers in Python/ directory (GH-146619)
2026-03-31 10:59:17 +03:00
getcompiler.c
gh-158445: Allocate memory in the heap in Py_GetVersion() (#158608)
2026-10-03 15:15:08 +02:00
getcopyright.c
gh-126133: Only use start year in PSF copyright, remove end years (#126236)
2024-11-12 15:59:19 +02:00
getopt.c
Fix _PyOS_GetOpt() error message for non-ASCII characters (#158626)
2026-10-03 15:37:58 +02:00
getplatform.c
bpo-32150: Expand tabs to spaces in C files. (#4583)
2017-11-28 17:56:10 +02:00
getversion.c
gh-158445: Allocate memory in the heap in Py_GetVersion() (#158608)
2026-10-03 15:15:08 +02:00
hamt.c
gh-155496: Use Argument Clinic for more functions and methods (GH-158134)
2026-09-27 19:00:22 +03:00
hashtable.c
gh-111545: Add Py_HashPointer() function (#112096)
2023-12-06 15:09:22 +01:00
import.c
gh-158820: Add null checks to avoid segfaults with lazy imports at shutdown (GH-158821)
2026-10-09 13:57:05 +02:00
importdl.c
gh-140011: Delete importdl assertion that prevents importing embedded modules from packages (GH-141605)
2025-11-26 14:12:49 +01:00
index_pool.c
gh-91048: Refactor and optimize remote debugging module (#134652)
2025-05-25 20:19:29 +00:00
initconfig.c
Rework locale encoding C functions (#158680)
2026-10-04 23:22:18 +02:00
instruction_sequence.c
GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569)
2026-01-16 09:11:58 +00:00
instrumentation.c
Run a job that the test suite with MSan to the CI (#158625)
2026-10-05 02:11:42 +01:00
interpconfig.c
gh-146615: Fix format specifiers in Python/ directory (GH-146619)
2026-03-31 10:59:17 +03:00
intrinsics.c
gh-138912: Add fast path for match class patterns without sub-patterns (#144820)
2026-09-26 13:00:10 -07:00
jit_publish.c
GH-126910: Add GNU backtrace support for unwinding JIT frames (#149104)
2026-05-05 09:29:07 +01:00
jit_unwind.c
gh-139808: Add branch protections for aarch64 in asm_trampoline.S (#130864)
2026-05-12 15:42:44 +00:00
jit.c
GH-148960: Reduce the size of the debug stencils to less than half. (GH-150551)
2026-06-01 17:56:16 +01:00
legacy_tracing.c
gh-148037: remove critical section from PyCode_Addr2Line (#148103)
2026-04-10 17:58:17 +05:30
lock.c
gh-157914: Revert "gh-135871: Reload lock internal state while spinning in PyMutex_LockTimed (gh-146064)" (gh-158082)
2026-09-27 17:29:07 +00:00
marshal.c
gh-156942: Raise the exception where the marshalling error is detected (GH-156944)
2026-09-18 17:14:25 +00:00
modsupport.c
gh-146636: Py_mod_abi mandatory for modules created from slots array (GH-146855)
2026-04-02 13:54:21 +02:00
mysnprintf.c
Add a warning message about PyOS_snprintf (#95993)
2022-10-07 11:49:53 -07:00
mystrtoul.c
gh-108765: Python.h no longer includes <ctype.h> (#108831)
2023-09-03 18:54:27 +02:00
object_stack.c
gh-100240: Use a consistent implementation for freelists (#121934)
2024-07-22 12:08:27 -04:00
opcode_targets.h
gh-145855: Remove the DELETE_ATTR bytecode (GH-146216)
2026-07-06 10:41:47 +01:00
optimizer_analysis.c
gh-157833: Fix specialized C calls with additional method flags (GH-157834)
2026-09-30 14:37:24 +01:00
optimizer_bytecodes.c
gh-157468: Validate correct builtins used under JIT (GH-157766)
2026-10-01 12:15:51 +01:00
optimizer_cases.c.h
gh-142349: Simplify lazy import resolution (#158282)
2026-10-01 16:20:45 +00:00
optimizer_symbols.c
gh-157468: Validate correct builtins used under JIT (GH-157766)
2026-10-01 12:15:51 +01:00
optimizer.c
gh-154014: Initialize cold executor vm_data fields (GH-154142)
2026-07-22 10:17:47 +01:00
parking_lot.c
gh-148820: Fix _PyRawMutex use-after-free on spurious semaphore wakeup (gh-148852)
2026-04-22 14:31:19 -04:00
pathconfig.c
gh-158001: Remove Py_SetProgramName() function (#158024)
2026-09-24 12:52:54 +02:00
perf_jit_trampoline.c
gh-156114: Fix crash in perf trampoline with unencodable code names (#156300)
2026-09-18 17:04:21 -04:00
perf_trampoline.c
gh-156114: Fix crash in perf trampoline with unencodable code names (#156300)
2026-09-18 17:04:21 -04:00
preconfig.c
Cleanup Python/getopt.c: add _PyOS_GetOpt structure (#158362)
2026-10-01 14:58:55 +00:00
pyarena.c
Chore: Fix typo in pyarena.c (#126527)
2024-11-07 16:37:41 +01:00
pyctype.c
…
pyfpe.c
bpo-46315: Add ifdef HAVE_ feature checks for WASI compatibility (GH-30507)
2022-01-13 09:46:04 +01:00
pyhash.c
gh-141226: Deprecate PEP-456 support for embedders (#141287)
2026-02-21 12:42:13 +01:00
pylifecycle.c
gh-158445: Allocate memory in the heap in Py_GetVersion() (#158608)
2026-10-03 15:15:08 +02:00
pymath.c
bpo-45440: Remove pymath.c fallbacks (GH-28977)
2021-10-15 19:45:34 +02:00
pystate.c
gh-142349: Simplify lazy import resolution (#158282)
2026-10-01 16:20:45 +00:00
pystats.c
gh-145685: per-type method cache implementation (#150160)
2026-07-21 14:11:22 +05:30
pystrcmp.c
gh-108767: Replace ctype.h functions with pyctype.h functions (#108772)
2023-09-01 18:36:53 +02:00
pystrhex.c
gh-155742: Use PyBytesWriter in _Py_strhex_impl() (#157734)
2026-09-18 14:09:09 +02:00
pystrtod.c
gh-158446: Reject float format precision near INT_MAX (GH-158474)
2026-09-30 05:22:37 +00:00
Python-ast.c
gh-157407: Fix a compilation error on Windows. (#158048)
2026-09-24 15:06:56 +09:00
Python-tokenize.c
gh-153569: Simplify tokenizer state (#158124)
2026-10-05 14:28:51 +01:00
pythonrun.c
gh-152132: Test Py_CompileString() in test_capi.test_run (#153470)
2026-07-10 03:36:31 +02:00
pytime.c
gh-152849: Fix OverflowError message for out-of-range timestamps in the time module (#152850)
2026-07-06 16:50:15 +02:00
qsbr.c
gh-144438: Fix false sharing between QSBR and tlbc_index (gh-144554)
2026-02-17 11:12:25 -05:00
README
Issue #18093: Factor out the programs that embed the runtime
2014-07-25 21:52:14 +10:00
record_functions.c.h
gh-149358: Generating JIT recorder transformers and stabilizing family layouts (GH-149359)
2026-05-21 17:06:52 +01:00
remote_debug.h
gh-156545, gh-158539: Fix deep flamegraph export on small C stacks and macOS runtime lookup (#158874)
2026-10-05 20:56:24 +01:00
remote_debugging.c
gh-138122: Implement frame caching in RemoteUnwinder to reduce memory reads (#142137)
2025-12-06 22:37:34 +00:00
slots_generated.c
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
slots.c
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
slots.toml
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
specialize.c
gh-157833: Fix specialized C calls with additional method flags (GH-157834)
2026-09-30 14:37:24 +01:00
stackrefs.c
gh-131527: Stackref debug borrow checker (#140599)
2025-11-05 11:12:56 -08:00
stdlib_module_names.h
gh-157361: Implement anext() in Python instead of C (#157362)
2026-09-16 18:58:59 +05:30
structmember.c
gh-146270: Fix PyMember_SetOne(..., NULL) not being atomic (gh-148800)
2026-05-06 09:50:24 -04:00
suggestions.c
GH-131238: Core header refactor (GH-131250)
2025-03-17 09:19:04 +00:00
symtable.c
gh-124697: Represent inlined comprehensions as subscopes in the symbol table (#156819)
2026-09-23 20:31:57 +01:00
sysmodule.c
gh-155496: Use Argument Clinic for more functions and methods (GH-158134)
2026-09-27 19:00:22 +03:00
thread_nt.h
gh-134745: Remove dead code in thread_nt.h left by gh-134747 (#154338)
2026-07-25 00:33:29 +02:00
thread_pthread_stubs.h
gh-125161: return non zero value in pthread_self on wasi (#125303)
2024-10-13 20:59:41 +05:30
thread_pthread.h
gh-157415: Fix data race in pthread wrapper (#157430)
2026-09-17 16:34:50 +02:00
thread.c
gh-134745: Use "pymutex" for sys.thread_info on Windows (#141140)
2025-11-06 16:10:39 +01:00
tier2_engine.md
Docs: fix spelling of the word 'transferring' (#116641)
2024-03-13 23:53:32 +01:00
traceback.c
gh-151157: Speed up PyObject_CallMethod via _PyObject_GetMethod (#151158)
2026-10-05 18:44:28 +00:00
tracemalloc.c
gh-155725: Remove PyGILState_Ensure usage from tracemalloc (#156409)
2026-08-30 13:04:55 +05:30
typecache.c
gh-145685: per-type method cache implementation (#150160)
2026-07-21 14:11:22 +05:30
uniqueid.c
gh-128923: Use zero to indicate unassigned unique id (#128925)
2025-01-17 16:42:27 +01:00
vm-state.md
gh-133079: Remove Py_C_RECURSION_LIMIT & PyThreadState.c_recursion_remaining (GH-133080)
2025-04-29 12:56:20 +02:00

README 

Miscellaneous source files for the main Python shared library
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