gh-157549: Use sysconf() for the page size in remote_debug.h (GH-157800)
getpagesize() is not an ISO C or POSIX function. Darwin hides the prototype under -std=c11, so the _remote_debugging build fails with -Werror=implicit-function-declaration. That is the failure in the reported x86_64-apple-darwin → arm64-apple-darwin cross build.
Call sysconf(_SC_PAGESIZE) instead, which is already how resource.getpagesize() works. Fall back to 4096 if sysconf() fails.
--without-remote-debug is unchanged. That flag only disables the target-side attach protocol (Py_REMOTE_DEBUG); it does not exclude the _remote_debugging client module.
(cherry picked from commit 9193375382)
Co-authored-by: ノウラ | Flare <nouraellm@gmail.com>
gh-128509: Use bytes singletons in marshal (GH-157398)
Replace soft deprecated PyBytes_FromStringAndSize(NULL, n) with
PyBytes_FromStringAndSize(str, n) so marshal can get bytes singleton.
(cherry picked from commit 658612ae77)
Co-authored-by: Victor Stinner <vstinner@python.org>
In the legacy Windows stdio mode PyConfig.stdio_encoding is now initialized
with the console output code page instead of the ANSI code page.
Only one encoding can be specified, so sys.stdin.encoding is still wrong if
the input code page differs from the output one.
(cherry picked from commit 0bb312a4ea)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
It was hard coded to map file descriptors 0, 1 and 2 to the console code
page, but a console can be opened as any file descriptor, and other
character devices, like NUL, are not consoles.
The file handle is now queried. The UTF-8 code page is also now reported
as "utf-8" instead of "cp65001".
(cherry picked from commit b4aea41d1c)
gh-155519: fix data-race for Context.ctx_vars (GH-155522)
(cherry picked from commit 9ee248c296)
Co-authored-by: Neil Schemenauer <nas-github@arctrix.com>
The __main__ module executed as a script or a command has __spec__ set to
None, so warn_explicit(module_globals=globals()) emitted a spurious
DeprecationWarning. It also raised ImportError when the loader was unable
to provide the source of the module: when the module was executed with -m
(the loader can only handle its own module name) or as a command (the
built-in importer has no source).
(cherry picked from commit f2eaf174b2)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-148817: Fold long lists/sets of constant elements into constant tuples/frozensets (#149016)
Fold long lists/sets of constant elements into constant tuples/frozensets.
(cherry picked from commit 084230eb2d)
Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
warn_explicit() computed the source line from the loader of the module
whose globals were passed as module_globals, but did not pass it to
WarningMessage. It also raised IndexError if lineno was out of the range
of the module source.
(cherry picked from commit c92e2fd8f9)
When running profiling on Linux without sudo, attempts to read
process memory would fail with the misleading error 'Failed to find
the PyRuntime section in process <pid> on Linux platform'.
The actual issue is a permissions error because profiling was not
run with sudo. We were clearing the exception on Linux when trying
to read memory, instead, we should bubble up the permissions error
and show it properly.
(cherry picked from commit 0563890872)
Co-authored-by: ivonastojanovic <80911834+ivonastojanovic@users.noreply.github.com>
On DragonFly BSD lwp_gettid() is only unique within a process (the main
thread is always LWP 1), so combine it with the process id, like Solaris.
(cherry picked from commit 53597df11e)
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
In free-threading builds, concurrent calls to sys.getdlopenflags() and
sys.setdlopenflags() race on interp->imports.dlopenflags. Fix by
using FT_ATOMIC_LOAD_INT_RELAXED / FT_ATOMIC_STORE_INT_RELAXED in
_PyImport_GetDLOpenFlags and _PyImport_SetDLOpenFlags, consistent with
how analogous interpreter-state integer fields (lazy_imports_mode,
pystats_enabled) are protected.
Relaxed ordering is correct here: dlopenflags is a standalone config
integer with no ordering relationship to other memory.
(cherry picked from commit cde31ec135)
Co-authored-by: Jiucheng(Oliver) <git.jiucheng@gmail.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
gh-152132: Test Py_CompileString() in test_capi.test_run (#153470)
PyRun functions now raises ValueError if the start argument is
invalid.
Add Modules/_testlimitedcapi/run.c.
(cherry picked from commit d83d26724b)
gh-152132: Fix Py_RunMain() to return an exit code (#153446)
* Fix Py_RunMain() to return an exit code, rather than calling
Py_Exit(), when running a script, a command, or the REPL.
* _PyRun_SimpleFile() now logs errors to stderr, for example if setting
__main__.__file__ fails.
* Add tests on Py_RunMain() exitcode.
* Rename functions:
* _PyRun_SimpleStringFlagsWithName() => _PyRun_SimpleString()
* _PyRun_SimpleFileObject() => _PyRun_SimpleFile()
* _PyRun_AnyFileObject() => _PyRun_AnyFile()
* _PyRun_InteractiveLoopObject() => _PyRun_InteractiveLoop()
* Change _PyRun_SimpleString(), _PyRun_SimpleFile(), _PyRun_AnyFile() and
_PyRun_InteractiveLoop() return type to PyObject*.
* pymain_repl() now displays the error if PySys_Audit() or
import _pyrepl failed.
* PyRun_SimpleFileExFlags() and PyRun_AnyFileExFlags() now log
PyUnicode_DecodeFSDefault() error. So these functions can no longer
return -1 with an exception set.
(cherry picked from commit fac72f1ee9)
gh-152132: Test all PyRun functions in test_capi.test_run (GH-153352)
PyRun_InteractiveOneObjectEx() now raises TypeError if the second
parameter type is not str.
(cherry picked from commit cd9994e283)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-153300: Set global configuration variables in PyConfig_Set() (#153301)
PyConfig_Set() now also set global configuration variables. For
example, PyConfig_Set("inspect", value) now also sets Py_InspectFlag.
Use PyConfig_Set() in main.c to set the inspect flag. Python code can
now see the updated sys.flags.inspect value.
(cherry picked from commit 9fb713f1b8)
gh-153205: Set `MemoryError` in stackref array conversion (GH-153206)
(cherry picked from commit 08759ff101)
Co-authored-by: An Long <aisk@users.noreply.github.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: sobolevn <mail@sobolevn.me>
In `symtable_visit_type_param_bound_or_default()`, when a reserved name
(e.g. `__classdict__`) is used as a type parameter, `PyUnicode_FromFormat()`
is called to build the SyntaxError message. If the allocation fails and
returns NULL, the subsequent `PyErr_SetObject()` and `Py_DECREF()` calls
would dereference NULL, causing a segfault.
Fix by returning 0 immediately when `PyUnicode_FromFormat()` returns NULL.
This propagates the MemoryError set by `PyUnicode_FromFormat()`.
The bug was introduced in gh-128632 (commit 891c61c).
(cherry picked from commit 10ed03edf1)
Co-authored-by: Petr Vaganov <petrvaganoff@gmail.com>
* Remove test
---------
Co-authored-by: Petr Vaganov <petrvaganoff@gmail.com>
Co-authored-by: Stan Ulbrych <stan@python.org>
gh-151126: Fix a possible crash during the startup with no memory under `Py_STACKREF_DEBUG` (GH-152478)
(cherry picked from commit ecdef17730)
Co-authored-by: sobolevn <mail@sobolevn.me>
This mimics an optimization already present for the single-mutex critical section.
(cherry picked from commit c2ca7724af)
Co-authored-by: Daniele Parmeggiani <8658291+dpdani@users.noreply.github.com>
[3.15] gh-151546: Fix stack limits on musl (#151548) (#151583)
gh-151546: Fix stack limits on musl (#151548)
If the thread stack size is set by linker flags, pass the stack size
to Python/ceval.c via the new _Py_LINKER_THREAD_STACK_SIZE variable
to set Py_C_STACK_SIZE macro.
(cherry picked from commit 9a61d1c0c8)
(cherry picked from commit a5c5edddbc)
gh-151218: Replace sys.flags in PyConfig_Set() (#151402)
PyConfig_Set() and sys.set_int_max_str_digits() now replace
sys.flags (create a new object), instead of modifying sys.flags in-place.
Modifying sys.flags in-place can lead to data races when multiple
threads are reading or writing sys.flags in parallel.
Use _Py_atomic functions to get and set max_str_digits members.
(cherry picked from commit b16d23fc9f)
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
