Makes the documentation of math and cmath module
more helpful for the beginners.
(cherry picked from commit 6faad355db)
Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>
The final addition (cur += step) may overflow, so use size_t for "cur".
"cur" is always positive (even for negative steps), so it is safe to use
size_t here.
Co-Authored-By: Martin Panter <vadmium+py@gmail.com>
(cherry picked from commit 14514d9084)
Co-authored-by: Zackery Spytz <zspytz@gmail.com>
* bpo-9566: Fix compiler warnings in gcmodule.c (GH-11010)
Change PyDTrace_GC_DONE() argument type from int to Py_ssize_t.
(cherry picked from commit edad38e3e0)
* bpo-30465: Fix C downcast warning on Windows in ast.c (#6593)
ast.c: fstring_fix_node_location() downcasts a pointer difference to
a C int. Replace int with Py_ssize_t to fix the compiler warning.
(cherry picked from commit fb7e7992be)
* bpo-9566: Fix compiler warnings in peephole.c (GH-10652)
(cherry picked from commit 028f0ef4f3)
* bpo-27645, sqlite: Fix integer overflow on sleep (#6594)
Use the _PyTime_t type and round away from zero (ROUND_UP,
_PyTime_ROUND_TIMEOUT) the sleep duration, when converting a Python
object to seconds and then to milliseconds. Raise an OverflowError in
case of overflow.
Previously the (int)double conversion rounded towards zero
(ROUND_DOWN).
(cherry picked from commit ca405017d5)
* bpo-36389: _PyObject_IsFreed() now also detects uninitialized memory (GH-12770)
Replace _PyMem_IsFreed() function with _PyMem_IsPtrFreed() inline
function. The function is now way more efficient, it became a simple
comparison on integers, rather than a short loop. It detects also
uninitialized bytes and "forbidden bytes" filled by debug hooks
on memory allocators.
Add unit tests on _PyObject_IsFreed().
(cherry picked from commit 2b00db6855)
* bpo-36389: Change PyMem_SetupDebugHooks() constants (GH-12782)
Modify CLEANBYTE, DEADDYTE and FORBIDDENBYTE constants: use 0xCD,
0xDD and 0xFD, rather than 0xCB, 0xBB and 0xFB, to use the same byte
patterns than Windows CRT debug malloc() and free().
(cherry picked from commit 4c409beb4c)
The error messages in the parser module are referring to numeric IDs for the nodes. To improve readability, use the node names when reporting errors..
(cherry picked from commit cb0748d393)
Co-authored-by: tyomitch <tyomitch@gmail.com>
Add a function to collect certificates from several certificate stores into one certificate collection store that is then enumerated. This ensures we load as many certificates as we can access.
(cherry picked from commit d93fbbf88e)
Co-authored-by: kctherookie <48805853+kctherookie@users.noreply.github.com>
Set type_attr to NULL after the assignment to stgdict->proto (like
what is done with stgdict after the Py_SETREF() call) so that it is
not decrefed twice on error.
(cherry picked from commit 5e333784f0)
Co-authored-by: Zackery Spytz <zspytz@gmail.com>
bpo-36256: Fix bug in parsermodule when parsing if statements
In the parser module, when validating nodes before starting the parsing with to create a ST in "parser_newstobject" there is a problem that appears when two arcs in the same DFA state has transitions with labels with the same type. For example, the DFA for if_stmt has a state with
two labels with the same type: "elif" and "else" (type NAME). The algorithm tries one by one the arcs until the label that starts the arc transition has a label with the same type of the current child label we are trying to accept. In this case, the arc for "elif" comes before the arc for "else"and passes this test (because the current child label is "else" and has the same type as "elif"). This lead to expecting a namedexpr_test (305) instead of a colon (11). The solution is to compare also the string representation (in case there is one) of the labels to see if the transition that we have is the correct one.
(cherry picked from commit 9a0000d15d)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Replace strncpy() with memcpy() in call_readline() to fix the
following warning, the NUL byte is written manually just after:
Modules/readline.c: In function ‘call_readline’:
Modules/readline.c:1303:9: warning: ‘strncpy’ output truncated before
terminating nul copying as many bytes from a string as its length
[-Wstringop-truncation]
strncpy(p, q, n);
^~~~~~~~~~~~~~~~
Modules/readline.c:1279:9: note: length computed here
n = strlen(p);
^~~~~~~~~
(cherry picked from commit 1600f60414)
Fix two unlikely reference leaks in _hashopenssl. The leaks only occur in
out-of-memory cases. Thanks to Charalampos Stratakis.
Signed-off-by: Christian Heimes <christian@python.org>
https://bugs.python.org/issue36179
(cherry picked from commit b7bc283ab6)
Co-authored-by: Christian Heimes <christian@python.org>
This is needed to even the run the test suite on buildbots for affected platforms; e.g.:
```
./python.exe ./Tools/scripts/run_tests.py -j 1 -u all -W --slowest --fail-env-changed --timeout=11700 -j2
/home/embray/src/python/test-worker/3.x.test-worker/build/python -u -W default -bb -E -W error::BytesWarning -m test -r -w -j 1 -u all -W --slowest --fail-env-changed --timeout=11700 -j2
Traceback (most recent call last):
File "./Tools/scripts/run_tests.py", line 56, in <module>
main(sys.argv[1:])
File "./Tools/scripts/run_tests.py", line 52, in main
os.execv(sys.executable, args)
PermissionError: [Errno 13] Permission denied
make: *** [Makefile:1073: buildbottest] Error 1
```
(cherry picked from commit 7a7693e9cb)
Co-authored-by: E. M. Bray <erik.m.bray@gmail.com>
The standard math library (libm) may follow IEEE-754 recommendation to
include an implementation of sinPi(), i.e. sinPi(x):=sin(pi*x).
And this triggers a name clash, found by FreeBSD developer
Steve Kargl, who worken on putting sinpi into libm used on FreeBSD
(it has to be named "sinpi", not "sinPi", cf. e.g.
https://en.cppreference.com/w/c/experimental/fpext4).
(cherry picked from commit f57cd8288d)
Co-authored-by: Dima Pasechnik <dimpase@gmail.com>
Fix C implementation of pickle.loads to use importlib's locking mechanisms, and thereby avoid using partially-loaded modules.
(cherry picked from commit 4371c0a9c0)
Co-authored-by: tjb900 <ozburgess@gmail.com>
Need to reset capturing groups between two SRE(match) callings in loops, this fixes wrong capturing groups in rare cases.
Also add a missing index in re.rst.
(cherry picked from commit 4a7f44a2ed)
Co-authored-by: animalize <animalize@users.noreply.github.com>
The error message emitted when returning invalid types from __fspath__ in interfaces that allow passing PathLike objects has been improved and now it does explain the origin of the error.
(cherry picked from commit 09fbcd6085)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Make sure that failure paths call CloseHandle outside of the function that failed
(cherry picked from commit b82bfac436)
Co-authored-by: Mark Becwar <mark@thebecwar.com>
This fixes the ctypes.test.test_structures.StructureTestCase test.
https://bugs.python.org/issue35847
(cherry picked from commit 742d768656)
Co-authored-by: Andreas Schwab <schwab@linux-m68k.org>
When the loop in the pymain_read_conf function in this same file
calls pymain_init_cmdline_argv() a 2nd time, the pymain->command
buffer of wchar_t is overriden and the previously allocated memory
is never freed.
(cherry picked from commit 35ca1820e1)
Co-authored-by: Lucas Cimon <lucas.cimon@gmail.com>
Fix a NULL pointer deref in ssl module. The cert parser did not handle CRL
distribution points with empty DP or URI correctly. A malicious or buggy
certificate can result into segfault.
Signed-off-by: Christian Heimes <christian@python.org>
https://bugs.python.org/issue35746
(cherry picked from commit a37f52436f)
Co-authored-by: Christian Heimes <christian@python.org>
Previously, calling the strftime() method on a datetime object with a
trailing '%' in the format string would result in an exception. However,
this only occured when the datetime C module was being used; the python
implementation did not match this behavior. Datetime is now PEP-399
compliant, and will not throw an exception on a trailing '%'.
(cherry picked from commit 454b3d4ea2)
Co-authored-by: MichaelSaah <mike.saah@gmail.com>
Fix memory leaks in asyncio ProactorEventLoop on overlapped operation
failures.
Changes:
* Implement the tp_traverse slot in the _overlapped.Overlapped type
to help to break reference cycles and identify referrers in the
garbage collector.
* Always clear overlapped on failure: not only set type to
TYPE_NOT_STARTED, but release also resources.
(cherry picked from commit 5485085b32)
Co-authored-by: Victor Stinner <vstinner@redhat.com>
Fix a memory leak in asyncio in the ProactorEventLoop when ReadFile()
or WSASend() overlapped operation fail immediately: release the
internal buffer.
(cherry picked from commit a234e14839)
Co-authored-by: Victor Stinner <vstinner@redhat.com>
It doesn't know the details of a few less common libc functions..
(cherry picked from commit 1d300ce1d8)
Co-authored-by: Gregory P. Smith <greg@krypto.org> [Google]
Use crypt_r() when available instead of crypt() in the crypt module.
As a nice side effect: This also avoids a memory sanitizer flake as clang msan doesn't know about crypt's internal libc allocated buffer.
(cherry picked from commit 387512c7ec)
Co-authored-by: Gregory P. Smith <greg@krypto.org> [Google]
Add Clang Memory Sanitizer build instrumentation to work around
false positives from the socket and time modules as well as skipping
a couple test_faulthandler tests.
(cherry picked from commit b474e6774d)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Miss Islington (bot)
Steve Dower
Victor Stinner
Marcin Niemira
Pablo Galindo
Inada Naoki
Serhiy Storchaka
Benjamin Peterson
Gregory P. Smith