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* Moving pragma for ignoring -Wnoexcept-type to the one location where it is needed.

* Trying a second location.

* The previous commit worked (GitHub Actions green), but see the added comment about the dicy nature of -Wnoexcept-type ("if and only if").

* Applying reviewer suggestion.

Accommodating environments that define __STDC_WANT_LIB_EXT1__ even if __STDC_LIB_EXT1__ is not defined by the implementation. (#3151)

Follow-on to PR #3129.

* Fixing `pragma warning pop` for `__INTEL_COMPILER`.

* Adding push/pop to 3 tests. Removing #878 from top of pybind11.h (it was/is only needed for 1 test).

* Trying again after CI failure, moving the push to the top of 2 tests.

* Trying more after CI failure, adding push/pop to pybind11_tests.h, constructor_stats.h.

* Moving ICC #2196 suppression to CMakeLists.txt

* Fixing condition for `pragma GCC diagnostic push` in pybind11.h

* Moving `pragma warning disable 2196` to common.h

* Revising #ifdef to be more conservative.

* Undoing insertion of notes that will hopefully soon be completely obsolete anyway.

* maint(clang-tidy) Improve code readability

* Fix minor typos

* Revert optimization that removed test case

* Fix comment formatting

* Revert another optimization to repro an issue

* Remove make_unique since it C++14 and newer only

* eformat comments

* Fix unsignedness of comparison

* Update comment

* Allow python builtins to be used as callbacks

* Try to fix pypy segfault

* Add expected fail for PyPy

* Fix typo

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci



* Add more info to xfail

* Add env

* Try returning false

* Try removing the move for pypy

* Fix bugs

* Try removing move

* Just keep ignoring for PyPy

* Add back xfail

* Fix ctors

* Revert change of std::move

* Change to skip

* Fix bug and edit comments

* Remove clang-tidy bugprone fix skip bug
Co-authored-by: Aaron Gokaslan <skylion.aaron@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Adding PYBIND11_COMPAT_BOOL_CAST to appease MSVC 2015 warning C4800.

* Replacing PYBIND11_COMPAT_BOOL_CAST with simpler != 0

* Extra parentheses (almost all compilers failed without these).

updates:
- [github.com/asottile/pyupgrade: v2.21.2 → v2.23.0](https://github.com/asottile/pyupgrade/compare/v2.21.2...v2.23.0

)
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

* Removing MSVC C4996 from pragma block at the top of pybind11.h

* localtime_thread_safe, PYBIND11_COMPAT_STRDUP

* Adding #include <ctime> (attempt to fix MSVC 2015, 2017 errors).

* Specified encoding in setup.py calls of open()

* Fix for Python2
Co-authored-by: Karsten Bock <karsten.bock@dlr.de>

* Move item instead of copy.

* Make Clang 3.6 happy.
Co-authored-by: c99 <email@dummy.com>

updates:
- [github.com/asottile/pyupgrade: v2.21.0 → v2.21.2](https://github.com/asottile/pyupgrade/compare/v2.21.0...v2.21.2)
- [github.com/psf/black: 21.6b0 → 21.7b0](https://github.com/psf/black/compare/21.6b0...21.7b0)
- https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8

* Introducing PYBIND11_VERSION_HEX (better late than never!)

* PYBIND11_VERSION_HEX consistency check in setup.py

The docutils 0.17+ release uses more semantic HTML5 tags, which
the RTD theme does not (yet) know.

This breaks side bar, lists and other elements.

* Enable -Wstrict-aliasing warning

* Narrow down the scope of -Wstrict-aliasing

* Go home, MSVC, you're drunk

* Make sure "pragma GCC" is not executed on ICC
Co-authored-by: Yannick Jadoul <yannick.jadoul@belgacom.net>

* style: disallow PyTest (should be pytest)

* style: cleanup spell checking a bit

* style: add a few items to the .gitignore

* Raise codec errors when casting to std::string

Allow the codec's exception to be raised instead of RuntimeError when
casting from py::str to std::string.

PY2 allows ucs surrogates in UTF-8 conversion
Signed-off-by: Shane Loretz <sloretz@openrobotics.org>
Signed-off-by: Shane Loretz <sloretz@osrfoundation.org>

* Attempt to fix py2 error

* Revert all unicode literals

* Fixed
Co-authored-by: Aaron Gokaslan <skylion.aaron@gmail.com>

* Removing stray semicolons (discovered by running clang-format v12 followed by tools/check-style.sh). (#3087)

* Manually moving `// NOLINT` comments so that clang-format does not move them to the wrong places.

* Manually reformatting comments related to `static_assert`s so that clang-format does not need two passes.

* Empty lines between #includes, to prevent clang-format from shuffling the order and thereby confusing MSVC 2015.

* git diff -U0 --no-color HEAD^ | python3 $HOME/clone/llvm-project/clang/tools/clang-format/clang-format-diff.py -p1 -style=file -i

For single-file extensions, a convenient pattern offered by cython
is to place the source files directly in the python source tree
(`foo/__init__.py`, `foo/ext.pyx`), deriving the package names from
their filesystem location.  Adapt this pattern for pybind11, using an
`intree_extensions` helper, which should be thought of as the moral
equivalent to `cythonize`.

Differences with cythonize: I chose not to include globbing support
(`intree_extensions(glob.glob("**/*.cpp"))` seems sufficient), nor to
provide extension-customization kwargs (directly setting the attributes
on the resulting Pybind11Extension objects seems sufficient).

We could choose to have `intree_extension` (singular instead) and make
users write `[*map(intree_extension, glob.glob("**/*.cpp"))]`; no strong
opinion here.
Co-authored-by: Aaron Gokaslan <skylion.aaron@gmail.com>

* Improve documentation of discard_as_unraisable() API

* Update pytypes.h

Remove "the above"

* Update pytypes.h

Fix precommit error
Co-authored-by: Aaron Gokaslan <skylion.aaron@gmail.com>

fix(clang-tidy): Add cppcoreguidelines-init-vars,slicing, and throw-by-value-catch-by-reference checks (#3094)

* clang-tidy: guard against more UB behavior

* Remove slicing check for now

* docs: update changelog

* docs: add one more and merge tidy

* Adding test_return_vector_bool_raw_ptr to test_stl.py.

* First attempt to make the documentation more accurate, but not trying to be comprehensive, to not bloat the reference table with too many details.

* Fixing minor oversights.

* Applying reviewer suggestion.

* chore: add nox support

* chore: add more lines to CODEOWNERS

Fixing spelling errors that went undetected because the pre-commit spell check was added after the CI for PR #2995 last ran. (#3103)

* Adding iostream.h thread-safety documentation.

* Restoring `TestThread` code with added `std::lock_guard<std::mutex>`.

* Updating new comments to reflect new information.

* Fixing up `git rebase -X theirs` accidents.

* Copying from prework_no_rst branch (PR #3087): test_numpy_array.cpp, test_stl.cpp

* Manual changes reducing NOLINTs.

* clang-format-diff.py

* Minor adjustment to avoid MSVC warning C4702: unreachable code