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Pablo Galindo SalgadoStan UlbrychVictor Stinner
 1bc78dea18 [3.15] Add MSan to CI (GH-158625) (#158832) 
Run a job that the test suite with MSan to the CI (#158625)

* Run the test suite with MSan in CI

* Additional fixes

* Add `_Py_MSAN_UNPOISON_STRING`

* Apply Victor's suggestions



* Apply Victor's suggestions



---------


(cherry picked from commit b93fb19a6e)

Co-authored-by: Stan Ulbrych <stan@python.org>
Co-authored-by: Victor Stinner <victor.stinner@gmail.com>
2026-10-05 10:28:24 +00:00
..
clinic
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +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
[3.15] gh-155952: Fix <unrepresentable> Argument Clinic defaults in several signatures (GH-155954) (#156165)
2026-08-29 10:08:27 +03:00
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
[3.15] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (GH-130864) (#149730)
2026-05-12 22:10:24 +02:00
asm_trampoline.S
[3.15] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (GH-130864) (#149730)
2026-05-12 22:10:24 +02:00
assemble.c
[3.15] gh-151112: Fix double free in assemble_init when out of memory (GH-151142) (#151205)
2026-06-09 20:16:42 +00:00
ast_preprocess.c
[3.15] gh-152708: Fix AST generation asymmetry for unary positive in match statements (GH-152712) (#158079)
2026-09-24 23:51:39 +01:00
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
[3.15] gh-152708: Fix AST generation asymmetry for unary positive in match statements (GH-152712) (#158079)
2026-09-24 23:51:39 +01:00
bltinmodule.c
[3.15] gh-152132: Test Py_CompileString() in test_capi.test_run (GH-153470) (#153472)
2026-07-10 02:07:38 +00:00
bootstrap_hash.c
GH-131238: Core header refactor (GH-131250)
2025-03-17 09:19:04 +00:00
brc.c
[3.15] gh-157838: Merge biased refcounts on behalf of detached threads (#157839) (#158011)
2026-09-29 10:13:34 +03:00
bytecodes.c
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +00:00
ceval_gil.c
gh-144748: Make PyErr_CheckSignals raise the exception scheduled by PyThreadState_SetAsyncExc (GH-145178)
2026-03-02 11:47:32 +01:00
ceval_macros.h
[3.15] gh-129752: Don't update adaptive counters when TLBC=0 in free-threading. (gh-155497) (#155647)
2026-08-26 14:52:45 +09:00
ceval.c
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +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
[3.15] gh-151253: Dump the Python path configuration on _PyCodec_InitRegistry() failure (#151250) (#151269)
2026-06-10 22:03:27 +02:00
codegen.c
[3.15] gh-156466: Fix additional compiler scope cleanup errors (GH-156547) (#156571)
2026-08-31 12:49:27 +03:00
compile.c
[3.15] gh-156466: Fix additional compiler scope cleanup errors (GH-156547) (#156571)
2026-08-31 12:49:27 +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
[3.15] gh-155519: fix data-race for Context.ctx_vars (GH-155522) (#155893)
2026-08-19 06:31:44 +03:00
critical_section.c
[3.15] gh-150902: Optimize PyCriticalSection2 to skip locking the same locks held by the current CS2 (gh-151554)
2026-06-19 09:52:07 -04:00
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
[3.15] gh-151842: Fix crash upon OOM in _interpreters.capture_exception (GH-151843) (GH-152031)
2026-06-23 20:58:10 +00:00
dtoa.c
[3.15] gh-158446: Reject float format precision near INT_MAX (GH-158474) (#158476)
2026-09-30 11:18:45 +03:00
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
[3.15] gh-122931: Allow stable abi3 API extensions to include a multiarch tuple in the filename (GH-152461) (GH-154772)
2026-07-29 10:21:30 +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-148690: Build Windows freethreaded binaries into separate directory and include python3t.dll on GIL-enabled (GH-149218)
2026-05-04 17:45:08 +01:00
emscripten_signal.c
GH-108614: Unbreak emscripten build (GH-109132)
2023-09-08 17:54:45 +01:00
emscripten_syscalls.c
gh-124621: Emscripten: Fix __syscall_ioctl patch (GH-136993)
2025-07-22 15:05:26 +02:00
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-145037: Fix Emscripten trampoline with emcc >= 4.0.19 (#145038)
2026-02-26 06:21:05 +08:00
errors.c
gh-146480: Override the exception in _PyErr_SetKeyError() (#146486)
2026-03-27 11:20:19 +00:00
executor_cases.c.h
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +00:00
fileutils.c
gh-42400: Fix buffer overflow in _Py_wrealpath() for very long paths (#141529)
2025-11-18 17:34:58 +01:00
flowgraph.c
[3.15] gh-148817: Fold long lists/sets of constant elements into constant tuples/frozensets (GH-149016) (#155897)
2026-08-19 06:33:24 +03:00
frame.c
gh-144446: Fix some frame object thread-safety issues (gh-144479)
2026-02-06 09:43:36 -05:00
frozen.c
[3.15] gh-148750: Unfreeze encodings module to avoid import errors with zipped stdlib (GH-156183) (#156328)
2026-08-27 13:51:03 +03:00
frozenmain.c
Use PyConfig_Get() in frozenmain.c (#137421)
2025-08-06 14:33:28 +02:00
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
[3.15] gh-155811: Add a seqcount to gc_stats to prevent torn reads (GH-155828) (#158829)
2026-10-05 10:21:24 +01:00
gc_gil.c
gh-100240: Use a consistent implementation for freelists (#121934)
2024-07-22 12:08:27 -04:00
gc.c
[3.15] gh-155811: Add a seqcount to gc_stats to prevent torn reads (GH-155828) (#158829)
2026-10-05 10:21:24 +01:00
generated_cases.c.h
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +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-141341: Rename COMPILER macro to _Py_COMPILER on Windows (#141342)
2025-11-10 15:50:51 +01:00
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
gh-119132: Remove "experimental" tag from the CPython free-threading. (gh-135550)
2025-06-16 23:32:52 +09:00
hamt.c
[3.15] gh-155515: Use GC tracking for HAMT iterators (GH-155517) (#155697)
2026-08-17 03:58:10 +00:00
hashtable.c
gh-111545: Add Py_HashPointer() function (#112096)
2023-12-06 15:09:22 +01:00
import.c
[3.15] gh-158140: Resolve lazily imported sibling submodules independently (GH-158521) (#158613)
2026-10-02 18:48:03 +00:00
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
[3.15] gh-153300: Set global configuration variables in PyConfig_Set() (GH-153301) (#153356)
2026-07-08 20:21:20 +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
[3.15] Add MSan to CI (GH-158625) (#158832)
2026-10-05 10:28:24 +00:00
interpconfig.c
gh-146615: Fix format specifiers in Python/ directory (GH-146619)
2026-03-31 10:59:17 +03:00
intrinsics.c
gh-111489: Remove _PyTuple_FromArray() alias (#139973)
2025-10-11 22:58:14 +02:00
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
[3.15] gh-139808: Add branch protections for aarch64 in asm_trampoline.S (GH-130864) (#149730)
2026-05-12 22:10:24 +02:00
jit.c
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
legacy_tracing.c
gh-148037: remove critical section from PyCode_Addr2Line (#148103)
2026-04-10 17:58:17 +05:30
lock.c
[3.15] gh-157914: Revert "gh-135871: Reload lock internal state while spinning in PyMutex_LockTimed (gh-146064)" (gh-158082) (#158290)
2026-09-30 13:17:02 +03:00
marshal.c
[3.15] gh-128509: Use bytes singletons in marshal (GH-157398) (#157433)
2026-09-15 16:44:47 +03:00
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-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
optimizer_analysis.c
[3.15] gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233) (#149690)
2026-05-11 14:23:39 -04:00
optimizer_bytecodes.c
[3.15] gh-149459: Fix segfault when _LOAD_SPECIAL guard deoptimizes (GH-149478) (#149552)
2026-05-08 11:48:04 +00:00
optimizer_cases.c.h
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +00:00
optimizer_symbols.c
gh-146261: JIT: protect against function version changes (#146300)
2026-04-13 02:23:47 +08:00
optimizer.c
[3.15] Backport GH-148874: Make sure that mngr.__exit__() is always called in a with statement (GH-150911) (GH-154830)
2026-08-03 16:23:34 +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-133644: Remove deprecated Python initialization getter functions (#133661)
2025-05-09 11:39:23 +00:00
perf_jit_trampoline.c
[3.15] gh-156114: Fix crash in perf trampoline with unencodable code names (GH-156300) (#157773)
2026-09-18 21:37:15 +00:00
perf_trampoline.c
[3.15] gh-156114: Fix crash in perf trampoline with unencodable code names (GH-156300) (#157773)
2026-09-18 21:37:15 +00:00
preconfig.c
gh-146302: make Py_IsInitialized() thread-safe and reflect true init completion (GH-146303)
2026-04-11 21:54:23 +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
[3.15] gh-154822: Fix racy assertion during finalization (GH-154824) (GH-154828)
2026-07-28 16:39:33 +00:00
pymath.c
bpo-45440: Remove pymath.c fallbacks (GH-28977)
2021-10-15 19:45:34 +02:00
pystate.c
[3.15] gh-142349: Simplify lazy import resolution (GH-158282) (#158569)
2026-10-01 16:56:39 +00:00
pystats.c
gh-146073: Add fitness/exit quality mechanism for JIT trace frontend (GH-148089)
2026-04-24 10:37:01 +01:00
pystrcmp.c
gh-108767: Replace ctype.h functions with pyctype.h functions (#108772)
2023-09-01 18:36:53 +02:00
pystrhex.c
[3.15] gh-149685: Use the _Py prefix for private C macros (GH-149686) (GH-149790)
2026-05-13 23:29:08 +02:00
pystrtod.c
[3.15] gh-158446: Reject float format precision near INT_MAX (GH-158474) (#158476)
2026-09-30 11:18:45 +03:00
Python-ast.c
[3.15] gh-156689: Fix out-of-bounds read in PyAst_CheckMode() for mode='func_type' (GH-156697) (#156705)
2026-09-24 16:21:58 +01:00
Python-tokenize.c
gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)
2026-03-24 17:47:55 +00:00
pythonrun.c
[3.15] gh-152132: Test Py_CompileString() in test_capi.test_run (GH-153470) (#153472)
2026-07-10 02:07:38 +00:00
pytime.c
[3.15] gh-152849: Fix OverflowError message for out-of-range timestamps in the time module (GH-152850) (#153209)
2026-07-06 15:25:47 +00:00
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-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
remote_debug.h
[3.15] gh-154194: Degrade frames in Tachyon instead of failing the sample (GH-154195) (#158831)
2026-10-05 10:03:58 +00:00
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
[3.15] GH-151619: Ensure non-module global/builtin namespaces are watched for lazy imports (GH-151762) (#152533)
2026-06-28 22:53:20 +00:00
stackrefs.c
gh-131527: Stackref debug borrow checker (#140599)
2025-11-05 11:12:56 -08:00
stdlib_module_names.h
gh-81313: Add the math.integer module (PEP-791) (GH-133909)
2025-10-31 16:13:43 +02:00
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
[3.15] gh-152682: Fix NULL dereference on OOM in symtable_visit_type_param_bound_or_default (GH-152684) (#152695)
2026-07-06 17:36:32 +01:00
sysmodule.c
[3.15] gh-157247: Block perf trampoline activation when the main interpreter's JIT is enabled (GH-157258) (#157324)
2026-09-23 01:11:38 +01:00
thread_nt.h
[3.15] gh-134745: Remove dead code in thread_nt.h left by gh-134747 (GH-154338) (#154655)
2026-07-24 23:01:47 +00:00
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
[3.15] gh-154283: Make threading.get_native_id() unique across processes on DragonFly (GH-154287) (GH-154293)
2026-07-20 20:20:57 +00:00
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
[3.15] gh-152903: Change PCWSTR to PWSTR in GetThreadDescription() typedef (GH-152904) (#152943)
2026-07-03 11:33:14 +00:00
tracemalloc.c
[3.15] gh-155725: Remove PyGILState_Ensure usage from tracemalloc (GH-156409) (#156628)
2026-08-31 09:53:56 +03:00
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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