Initialize a variable to make the compiler happy. (GH-9153)
GCC complains:
Python/pylifecycle.c: In function ‘_Py_InitializeFromConfig’:
Python/pylifecycle.c:900:13: warning: ‘interp’ may be used uninitialized in this function [-Wmaybe-uninitialized]
err = _Py_InitializeMainInterpreter(interp, &main_config);
~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This seems spurious since &interp is passed to _Py_InitializeCore. Anyway, we
can easily initialize to quiet the warning.
This also removes the old manual p2cread, c2pwrite, and errwrite closing logic
as inheritable flags and _close_open_fds takes care of that properly today without special treatment.
This code is within child_exec() where it is the only thread so there is no
race condition between the dup and _Py_set_inheritable_async_safe call.
bpo-34588: Fix an off-by-one error in traceback formatting. (GH-9077)
The recursive frame pruning code always undercounted the number of elided frames
by one. That is, in the "[Previous line repeated N more times]" message, N would
always be one too few. Near the recursive pruning cutoff, one frame could be
silently dropped. That situation is demonstrated in the OP of the bug report.
The fix is to start the identical frame counter at 1.
Pablo Aguiar [Fri, 7 Sep 2018 22:04:48 +0000 (00:04 +0200)]
bpo-34246: Use no mutable default args in smtplib (GH-8554)
Some methods of the SMTP class use mutable default arguments. Specially
`send_message` is affected as it mutates one of the args by appending items
to it, which has side effects on further calls.
Victor Stinner [Fri, 7 Sep 2018 16:00:58 +0000 (18:00 +0200)]
bpo-34595: Add %T format to PyUnicode_FromFormatV() (GH-9080)
* Add %T format to PyUnicode_FromFormatV(), and so to
PyUnicode_FromFormat() and PyErr_Format(), to format an object type
name: equivalent to "%s" with Py_TYPE(obj)->tp_name.
* Replace Py_TYPE(obj)->tp_name with %T format in unicodeobject.c.
* Add unit test on %T format.
* Rename unicode_fromformat_write_cstr() to
unicode_fromformat_write_utf8(), to make the intent more explicit.
Victor Stinner [Fri, 7 Sep 2018 15:30:33 +0000 (17:30 +0200)]
bpo-34605: Avoid master/slave terms (GH-9101)
* Replace "master process" with "parent process"
* Replace "master option mappings" with "main option mappings"
* Replace "master pattern object" with "main pattern object"
* ssl: replace "master" with "server"
* And some other similar changes
Fail `test_semaphore_tracker_sigint` if no warnings are expected and one is received.
Fix race condition when the child receives SIGINT before it can register signal handlers for it.
The race condition occurs when the parent calls
`_semaphore_tracker.ensure_running()` (which in turn spawns the
semaphore_tracker using `_posixsubprocess.fork_exec`), the child
registers the signal handlers and the parent tries to kill the child.
What seem to happen is that in some slow systems, the parent sends the
signal to kill the child before the child protects against the signal.
Victor Stinner [Mon, 3 Sep 2018 21:17:20 +0000 (23:17 +0200)]
bpo-26901: Fix the Argument Clinic test suite (GH-8879)
* Fix Tools/clinic/clinic_test.py: add missing
FakeClinic.destination_buffers attribute and pass a file argument
to Clinic().
* Rename Tools/clinic/clinic_test.py to Lib/test/test_clinic.py:
add temporary Tools/clinic/ to sys.path to import the clinic
module.
Co-Authored-By: Pablo Galindo <pablogsal@gmail.com>
Victor Stinner [Mon, 3 Sep 2018 15:06:39 +0000 (17:06 +0200)]
bpo-34567: pythoninfo gets coreconfig (GH-9043)
* Add _testcapi.get_coreconfig() to get the _PyCoreConfig of the
interpreter
* test.pythoninfo now gets the core configuration using
_testcapi.get_coreconfig()
Victor Stinner [Mon, 3 Sep 2018 12:38:21 +0000 (14:38 +0200)]
bpo-34544: Fix setlocale() in pymain_read_conf() (GH-9041)
bpo-34485, bpo-34544: On some FreeBSD, nl_langinfo(CODESET) fails if
LC_ALL or LC_CTYPE is set to an invalid locale name. Replace
_Py_SetLocaleFromEnv(LC_CTYPE) with _Py_SetLocaleFromEnv(LC_ALL) to
initialize properly locales.
Pablo Galindo [Fri, 31 Aug 2018 22:04:47 +0000 (23:04 +0100)]
bpo-34007: Skip traceback tests if the Program Counter is not available. (GH-9018)
Sometimes some versions of the shared libraries that are part of the
traceback are compiled in optimised mode and the Program Counter (PC)
is not present, not allowing gdb to walk the frames back. When this
happens, the Python bindings of gdb raise an exception, making the
test impossible to succeed.
Simplify vector_norm() by eliminating special cases in the main loop (GH-9006)
The *max* value is no longer treated as a special case in the main loop. Besides making the main loop simpler and branchless, this also lets us relax the input restriction of *vec* to contain only non-negative values.
Victor Stinner [Wed, 29 Aug 2018 23:21:11 +0000 (01:21 +0200)]
Fix TestPosixSpawn.test_close_file() (GH-8992)
Modify TestPosixSpawn to run Python using -I and -S options.
Disable site module to avoid side effects. For example, on Fedora 28,
if the HOME environment variable is not set, site._getuserbase()
calls pwd.getpwuid() which opens /var/lib/sss/mc/passwd, but then
leaves the file open which makes test_close_file() to fail.
Victor Stinner [Wed, 29 Aug 2018 22:50:45 +0000 (00:50 +0200)]
bpo-34523: Use _PyCoreConfig instead of globals (GH-9005)
Use the core configuration of the interpreter, rather
than using global configuration variables. For example, replace
Py_QuietFlag with core_config->quiet.
Victor Stinner [Wed, 29 Aug 2018 21:26:55 +0000 (23:26 +0200)]
bpo-34523: Py_FileSystemDefaultEncoding NULL by default (GH-9003)
* Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
default value is now NULL: initfsencoding() set them
during Python initialization.
* Document how Python chooses the filesystem encoding and error
handler.
* Add an assertion to _PyCoreConfig_Read().
Victor Stinner [Wed, 29 Aug 2018 20:21:32 +0000 (22:21 +0200)]
bpo-34523: Support surrogatepass in locale codecs (GH-8995)
Add support for the "surrogatepass" error handler in
PyUnicode_DecodeFSDefault() and PyUnicode_EncodeFSDefault()
for the UTF-8 encoding.
Changes:
* _Py_DecodeUTF8Ex() and _Py_EncodeUTF8Ex() now support the
surrogatepass error handler (_Py_ERROR_SURROGATEPASS).
* _Py_DecodeLocaleEx() and _Py_EncodeLocaleEx() now use
the _Py_error_handler enum instead of "int surrogateescape" to pass
the error handler. These functions now return -3 if the error
handler is unknown.
* Add unit tests on _Py_DecodeLocaleEx() and _Py_EncodeLocaleEx()
in test_codecs.
* Rename get_error_handler() to _Py_GetErrorHandler() and expose it
as a private function.
* _freeze_importlib doesn't need config.filesystem_errors="strict"
workaround anymore.
_PyCoreConfig_Read() is now responsible to choose the filesystem
encoding and error handler. Using Py_Main(), the encoding is now
chosen even before calling Py_Initialize().
_PyCoreConfig.filesystem_encoding is now the reference, instead of
Py_FileSystemDefaultEncoding, for the Python filesystem encoding.
Changes:
* Add filesystem_encoding and filesystem_errors to _PyCoreConfig
* _PyCoreConfig_Read() now reads the locale encoding for the file
system encoding.
* PyUnicode_EncodeFSDefault() and PyUnicode_DecodeFSDefaultAndSize()
now use the interpreter configuration rather than
Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
global configuration variables.
* Add _Py_SetFileSystemEncoding() and _Py_ClearFileSystemEncoding()
private functions to only modify Py_FileSystemDefaultEncoding and
Py_FileSystemDefaultEncodeErrors in coreconfig.c.
* _Py_CoerceLegacyLocale() now takes an int rather than
_PyCoreConfig for the warning.
Victor Stinner [Wed, 29 Aug 2018 09:25:15 +0000 (11:25 +0200)]
bpo-34485, Windows: LC_CTYPE set to user preference (GH-8988)
On Windows, the LC_CTYPE is now set to the user preferred locale at
startup: _Py_SetLocaleFromEnv(LC_CTYPE) is now called during the
Python initialization. Previously, the LC_CTYPE locale was "C" at
startup, but changed when calling setlocale(LC_CTYPE, "") or
setlocale(LC_ALL, "").
pymain_read_conf() now also calls _Py_SetLocaleFromEnv(LC_CTYPE) to
behave as _Py_InitializeCore(). Moreover, it doesn't save/restore the
LC_ALL anymore.
On Windows, standard streams like sys.stdout now always use
surrogateescape error handler by default (ignore the locale).
Victor Stinner [Wed, 29 Aug 2018 07:58:12 +0000 (09:58 +0200)]
bpo-34485: stdout uses surrogateescape on POSIX locale (GH-8986)
Standard streams like sys.stdout now use the "surrogateescape" error
handler, instead of "strict", on the POSIX locale (when the C locale is not
coerced and the UTF-8 Mode is disabled).
Victor Stinner [Tue, 28 Aug 2018 22:16:53 +0000 (00:16 +0200)]
bpo-34485: Fix _Py_InitializeCore() for C locale coercion (GH-8979)
* _Py_InitializeCore() now sets the LC_CTYPE locale to the user
preferred locale before checking if the C locale should be coerced
or not in _PyCoreConfig_Read().
* Fix pymain_read_conf(): remember if the C locale has been coerced
when the configuration should be read again if the encoding has
changed.
Victor Stinner [Tue, 28 Aug 2018 21:26:33 +0000 (23:26 +0200)]
bpo-34485: Enhance init_sys_streams() (GH-8978)
Python now gets the locale encoding with C code to initialize the encoding
of standard streams like sys.stdout. Moreover, the encoding is now
initialized to the Python codec name to get a normalized encoding name and
to ensure that the codec is loaded. The change avoids importing
_bootlocale and _locale modules at startup by default.
When the PYTHONIOENCODING environment variable only contains an encoding,
the error handler is now is now set explicitly to "strict".
Rename also get_default_standard_stream_error_handler() to
get_stdio_errors().
Reduce the buffer to format the "cpXXX" string (Windows locale encoding).
Victor Stinner [Tue, 28 Aug 2018 15:27:36 +0000 (17:27 +0200)]
bpo-34403: On HP-UX, force ASCII for C locale (GH-8969)
On HP-UX with C or POSIX locale, sys.getfilesystemencoding() now returns
"ascii" instead of "roman8" (when the UTF-8 Mode is disabled and the C locale
is not coerced).
nl_langinfo(CODESET) announces "roman8" whereas it uses the Latin1
encoding in practice.