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Miss Islington (bot)andCary Hawkins 48b1e6026b [3.14] gh-159652: Fix import lock leak when the C stack is nearly exhausted (GH-159660) (GH-160780) 
gh-159652: Fix import lock leak when the C stack is nearly exhausted (GH-159660)

When an import failed with a stack overflow RecursionError, releasing the import locks on the error path could itself raise RecursionError, because the cleanup runs in a new C frame. This left the global import lock or a module lock held forever, and later imports in other threads blocked indefinitely.

_imp.acquire_lock() now raises RecursionError when there is not enough stack left to release the lock. importlib calls it before taking any import lock, so this covers the per-module locks too. The module lock weakref callback skips cleanup in that case instead of
reporting an unraisable exception.
(cherry picked from commit 926b0bf311)

Co-authored-by: Cary Hawkins <hawkinscary23@gmail.com>
2026-10-27 22:12:45 +00:00
..
clinic
[3.14] gh-155952: Fix <unrepresentable> Argument Clinic defaults in several signatures (#156172)
2026-08-21 13:23:30 +01:00
frozen_modules
gh-97669: Create Tools/build/ directory (#97963)
2022-10-17 12:01:00 +02:00
_contextvars.c
gh-128384: Use a context variable for warnings.catch_warnings (gh-130010)
2025-04-09 16:18:54 -07:00
_warnings.c
[3.14] gh-159739: Fix reference and error handling in warnings (GH-159758) (#160085)
2026-10-21 19:24:15 +00:00
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.h
[3.14] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (#130864) (#150189)
2026-05-21 18:41:26 +02:00
asm_trampoline.S
[3.14] gh-128883: Store ELF perf trampoline templates in read-only data (GH-160366) (#160492)
2026-10-23 20:56:21 +00:00
assemble.c
[3.14] gh-151112: Fix double free in assemble_init when out of memory (GH-151142) (#151206)
2026-06-09 21:13:45 +01:00
ast_preprocess.c
[3.14] gh-131927: Do not emit PEP 765 warnings in ast.parse() (GH-139642) (GH-140786)
2025-10-30 11:25:34 +00:00
ast_unparse.c
[3.14] gh-132661: Disallow Template/str concatenation after PEP 750 spec update (#135996) (#136901)
2025-07-21 17:34:54 +02:00
ast.c
[3.14] gh-85260: Extend the AST Validator to validate all identifiers (GH-21069) (GH-155651)
2026-08-13 05:58:06 +00:00
bltinmodule.c
[3.14] gh-150285: Fix too long docstrings in builtins (GH-150293) (GH-150466)
2026-05-26 10:05:49 +00:00
bootstrap_hash.c
GH-131238: Core header refactor (GH-131250)
2025-03-17 09:19:04 +00:00
brc.c
[3.14] gh-157838: Merge biased refcounts on behalf of detached threads (#157839) (#158012)
2026-09-29 08:22:24 +05:30
bytecodes.c
[3.14] gh-154902: Type-check the SET_ADD operand (#155072)
2026-08-05 07:24:50 -07:00
ceval_gil.c
[3.14] GH-133136: Revise QSBR to reduce excess memory held (gh-135473) (#135912)
2025-07-08 10:58:01 -07:00
ceval_macros.h
[3.14] gh-129752: Don't update adaptive counters when TLBC=0 in free-threading. (gh-155497) (gh-155715)
2026-08-13 15:20:04 +00:00
ceval.c
[3.14] gh-159320: Enable stack size detection on Android (GH-159321) (#159410)
2026-10-14 12:44:00 +00:00
codecs.c
[3.14] gh-159739: Hold the codec registry lock while unregistering (GH-160168) (#160485)
2026-10-24 13:43:43 -07:00
codegen.c
[3.14] gh-156466: fix cleanup on error in codegen_function_body (GH-156511) (#156579)
2026-10-25 16:01:30 +02:00
compile.c
[3.14] gh-156459: Fix cleanup on error in compiler_set_qualname (GH-156462) (#156575)
2026-10-23 20:35:42 +03:00
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
[3.14] gh-159739: Preserve ContextVar cache updates from finalizers (GH-160197) (#160329)
2026-10-22 15:22:13 -07:00
critical_section.c
[3.14] gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2 (gh-151555)
2026-06-19 09:51:55 -04:00
crossinterp_data_lookup.h
[3.14] gh-146615: Fix format specifiers in Python/ directory (GH-146619) (GH-146650)
2026-03-31 08:25:07 +00:00
crossinterp_exceptions.h
[3.14] gh-132775: Clean Up Cross-Interpreter Error Handling (gh-135492)
2025-06-14 02:08:25 +00:00
crossinterp.c
[3.14] gh-151842: Fix crash upon OOM in _interpreters.capture_exception (GH-151843) (GH-152032)
2026-06-23 20:57:34 +00:00
dtoa.c
[3.14] gh-158446: Reject float format precision near INT_MAX (GH-158474) (#158477)
2026-09-30 08:36:53 +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-131238: Remove more includes from pycore_interp.h (#131480)
2025-03-19 23:01:32 +01:00
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-131238: Remove pycore_runtime.h from pycore_pystate.h (#131356)
2025-03-19 17:33:24 +01:00
emscripten_signal.c
GH-108614: Unbreak emscripten build (GH-109132)
2023-09-08 17:54:45 +01:00
emscripten_syscalls.c
[3.14] gh-124621: Emscripten: Support pyrepl in browser (GH-136931) (GH-136988)
2025-07-22 15:04:11 +02:00
emscripten_trampoline_inner.c
[3.14] gh-128627: Use __builtin_wasm_test_function_pointer_signature for Emscripten trampoline (GH-137470) (#139039)
2025-09-17 17:21:01 +01:00
emscripten_trampoline.c
[3.14] gh-145037: Fix Emscripten trampoline with emcc >= 4.0.19 (GH-145038) (#145283)
2026-02-27 08:55:59 +08:00
errors.c
[3.14] gh-158893: Make os.strerror() thread-safe (#159120) (#159145)
2026-10-10 20:54:38 +00:00
executor_cases.c.h
[3.14] gh-154902: Type-check the SET_ADD operand (#155072)
2026-08-05 07:24:50 -07:00
fileutils.c
[3.14] gh-158893: Make os.strerror() thread-safe (#159120) (#159145)
2026-10-10 20:54:38 +00:00
flowgraph.c
[3.14] gh-148817: Fold long lists/sets of constant elements into constant tu… (#155898)
2026-08-16 17:16:24 +03:00
formatter_unicode.c
[3.14] gh-159739: Check character formatting allocation failure (GH-159746) (#159840)
2026-10-20 08:45:25 -07:00
frame.c
[3.14] gh-144446: Fix some frame object thread-safety issues (gh-144479) (#144546)
2026-02-06 15:25:36 +00:00
frozen.c
GH-89435: os.path should not be a frozen module (#126924)
2024-11-22 18:50:30 +00:00
frozenmain.c
gh-105716: Fix _PyInterpreterState_IsRunningMain() For Embedders (gh-117140)
2024-03-21 18:20:20 -06:00
future.c
gh-126139: Improve error message location for future statement with unknown feature (#126140)
2024-10-29 23:57:59 +00:00
gc_free_threading.c
[3.14] gh-159111: Update vendored mimalloc to v2.5.2 (gh-159112) (gh-160183)
2026-10-22 09:54:37 -07:00
gc_gil.c
gh-100240: Use a consistent implementation for freelists (#121934)
2024-07-22 12:08:27 -04:00
gc.c
[3.14] GH-148726: Add heap_size to _gc_runtime_state (#149025)
2026-04-29 13:04:11 +03:00
generated_cases.c.h
[3.14] gh-154902: Type-check the SET_ADD operand (#155072)
2026-08-05 07:24:50 -07:00
getargs.c
[3.14] gh-146615: Fix format specifiers in Python/ directory (GH-146619) (GH-146650)
2026-03-31 08:25:07 +00:00
getcompiler.c
closes bpo-43278: remove unnecessary leading '\n' from COMPILER when build with GCC/Clang (GH-24606)
2021-02-25 20:24:21 -08:00
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
GH-133336: Remove reserved `-J` flag for Jython (#133444)
2025-05-05 15:09:19 +00:00
getplatform.c
bpo-32150: Expand tabs to spaces in C files. (#4583)
2017-11-28 17:56:10 +02:00
getversion.c
[3.14] gh-119132: Remove "experimental" tag from the CPython free-threading. (gh-135550) (gh-135565)
2025-06-16 14:58:14 +00:00
hamt.c
[3.14] gh-155515: Use GC tracking for HAMT iterators (GH-155517) (#155698)
2026-08-17 06:40:05 +03:00
hashtable.c
gh-111545: Add Py_HashPointer() function (#112096)
2023-12-06 15:09:22 +01:00
import.c
[3.14] gh-159652: Fix import lock leak when the C stack is nearly exhausted (GH-159660) (GH-160780)
2026-10-27 22:12:45 +00:00
importdl.c
[3.14] gh-140011: Delete importdl assertion that prevents importing embedded modules from packages (GH-141605) (#141986)
2025-11-28 23:30:57 -08:00
index_pool.c
[3.14] gh-91048: Refactor and optimize remote debugging module (#134652) (#134673)
2025-05-25 22:10:20 +00:00
initconfig.c
[3.14] gh-159739: Release replaced PyInitConfig strings (GH-159769) (#159810)
2026-10-20 00:32:57 +00:00
instruction_sequence.c
GH-124715: Move trashcan mechanism into Py_Dealloc (GH-132280)
2025-04-30 11:37:53 +01:00
instrumentation.c
[3.14] gh-158121: Preserve instruction events when line monitoring is… (#159741)
2026-10-19 14:19:52 -07:00
interpconfig.c
[3.14] gh-159739: Handle interpreter configuration encoding errors (GH-159747) (#159844)
2026-10-20 11:12:29 -07:00
intrinsics.c
Get rid of ERROR_IF's "label" parameter (GH-132654)
2025-04-29 17:21:53 -07:00
jit.c
[3.14] GH-146128: Remove the buggy AArch64 "33rx" relocation (GH-146263) (#148198)
2026-04-07 14:05:47 +03:00
legacy_tracing.c
[3.14] gh-148037: remove critical section from PyCode_Addr2Line (GH… (#148353)
2026-04-10 23:59:38 +05:30
lock.c
[3.14] gh-158973: Reset the warnings lock after fork in the child (gh-158974) (gh-159615)
2026-10-20 00:06:42 +00:00
marshal.c
[3.14] gh-159111: Update vendored mimalloc to v2.5.2 (gh-159112) (gh-160183)
2026-10-22 09:54:37 -07:00
modsupport.c
gh-132909: handle overflow for 'K' format in do_mkvalue (#132911)
2025-04-25 11:02:57 +00:00
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-100239: specialize BINARY_OP/SUBSCR for list-slice (#132626)
2025-05-01 10:28:52 +00:00
optimizer_analysis.c
[3.14] gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233) (#149691)
2026-05-12 13:21:31 -04:00
optimizer_bytecodes.c
[3.14] gh-135608: Add a null check for attribute promotion to fix a JIT crash (GH-135613) (#135739)
2025-06-20 15:24:25 +08:00
optimizer_cases.c.h
[3.14] gh-135608: Add a null check for attribute promotion to fix a JIT crash (GH-135613) (#135739)
2025-06-20 15:24:25 +08:00
optimizer_symbols.c
[3.14] gh-137728 gh-137762: Fix bugs in the JIT with many local variables (GH-137764) (#137999)
2025-08-21 17:00:05 +03:00
optimizer.c
[3.14] gh-137007: Track executor before any possible deallocations (GH-137016) (GH-142541)
2025-12-10 22:54:28 +00:00
parking_lot.c
[3.14] gh-148820: Fix _PyRawMutex use-after-free on spurious semaphore wakeup (gh-148852) (#148884)
2026-04-22 18:59:58 +00:00
pathconfig.c
gh-111924: Fix data races when swapping allocators (gh-130287)
2025-02-20 11:31:15 -05:00
perf_jit_trampoline.c
[3.14] gh-156114: Fix crash in perf trampoline with unencodable code names (GH-156300) (#157775)
2026-09-18 21:35:08 +00:00
perf_trampoline.c
[3.14] gh-156114: Fix crash in perf trampoline with unencodable code names (GH-156300) (#157775)
2026-09-18 21:35:08 +00:00
preconfig.c
[3.14] gh-145092: Fix compiler warning for memchr() and wcschr() returning const pointer (GH-145093) (GH-145102)
2026-02-22 08:28:17 +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-122854: Add Py_HashBuffer() function (#122855)
2024-08-30 15:42:27 +00:00
pylifecycle.c
[3.14] Fix ignored error returns in sys initialization, _ctypes and _interpchannels (GH-160614) (#160712)
2026-10-26 19:49:48 +00:00
pymath.c
bpo-45440: Remove pymath.c fallbacks (GH-28977)
2021-10-15 19:45:34 +02:00
pystate.c
[3.14] gh-159111: Update vendored mimalloc to v2.5.2 (gh-159112) (gh-160183)
2026-10-22 09:54:37 -07:00
pystrcmp.c
gh-108767: Replace ctype.h functions with pyctype.h functions (#108772)
2023-09-01 18:36:53 +02:00
pystrhex.c
[3.14] gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548) (GH-142301)
2025-12-12 15:11:43 +00:00
pystrtod.c
[3.14] gh-158446: Reject float format precision near INT_MAX (GH-158474) (#158477)
2026-09-30 08:36:53 +00:00
Python-ast.c
[3.14] gh-156909: Fix AST.__repr__ call getting the _fields attribute (GH-157490) (GH-157596) (GH-159232)
2026-10-13 12:12:05 +02:00
Python-tokenize.c
gh-111178: Fix function signatures for test_types (#131455)
2025-03-19 13:46:17 +00:00
pythonrun.c
[3.14] gh-152132: Test Py_CompileString() in test_capi.test_run (#153470) (#153473)
2026-07-10 02:08:14 +00:00
pytime.c
[3.14] gh-152849: Fix OverflowError message for out-of-range timestamps in the time module (GH-152850) (#153208)
2026-07-06 15:16:34 +00:00
qsbr.c
[3.14] gh-144438: Fix false sharing between QSBR and tlbc_index (gh-144554) (#144923)
2026-03-31 19:20:24 +00:00
README
Issue #18093: Factor out the programs that embed the runtime
2014-07-25 21:52:14 +10:00
remote_debug.h
[3.14] gh-158539: Fix macOS runtime section lookup for remote debugging (GH-158874) (#158906)
2026-10-06 17:13:01 +01:00
remote_debugging.c
[3.14] gh-158893: Make os.strerror() thread-safe (#159120) (#159145)
2026-10-10 20:54:38 +00:00
specialize.c
[3.14] gh-152075: Avoid lock contention in _Py_Specialize_LoadGlobal under free threading (gh-153720) (#158904)
2026-10-06 18:47:51 +05:30
stackrefs.c
[3.14] gh-133590: ensure that TableEntry.linenumber_borrow is initialized (GH-133681) (#133872)
2025-05-11 08:44:22 +00:00
stdlib_module_names.h
GH-91048: Minor fixes for `_remotedebugging & rename to _remote_debugging` (#133398)
2025-05-05 02:30:14 +02:00
structmember.c
[3.14] gh-146270: Fix PyMember_SetOne(..., NULL) not being atomic (gh-148800) (#149460)
2026-05-06 14:16:36 +00:00
suggestions.c
GH-131238: Core header refactor (GH-131250)
2025-03-17 09:19:04 +00:00
symtable.c
[3.14] gh-160299: Preserve references from inlined comprehensions (GH-160413) (#160457)
2026-10-23 18:31:06 +00:00
sysmodule.c
[3.14] gh-151218: Replace sys.flags in PyConfig_Set() (#151402) (#151553)
2026-06-16 18:55:35 +02:00
thread_nt.h
GH-131296: Add missing UNREACHABLE mark in thread_nt.h (GH-131589)
2025-03-31 20:28:35 +01:00
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
[3.14] gh-157415: Fix data race in pthread wrapper (#157430) (#159547)
2026-10-16 15:55:12 +00:00
thread.c
gh-131238: Add explicit includes to pycore headers (#131257)
2025-03-17 12:32:43 +01:00
tier2_engine.md
Docs: fix spelling of the word 'transferring' (#116641)
2024-03-13 23:53:32 +01:00
traceback.c
[3.14] gh-113318: Fix @getter and @setter in Argument Clinic (GH-155778) (GH-156011)
2026-08-18 13:09:24 +00:00
tracemalloc.c
[3.14] gh-144763: Fix race conditions in tracemalloc (#144779) (#144965)
2026-02-18 20:55:38 +01:00
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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