[clang-tools-extra] [clang-tidy] Add fix-it for C-style cast of nullptr (PR #173159)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

* 3057 tests passed
* 7 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Clang Tools
<details>
<summary>Clang Tools.clang-tidy/infrastructure/alphabetical-order.test</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
/usr/bin/python3 /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../clang-tidy/tool/check_alphabetical_order.py -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.clang-tidy-checks-list.rst
# executed command: /usr/bin/python3 /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../clang-tidy/tool/check_alphabetical_order.py -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.clang-tidy-checks-list.rst
# note: command had no output on stdout or stderr
# RUN: at line 2
diff --strip-trailing-cr /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../docs/clang-tidy/checks/list.rst /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.clang-tidy-checks-list.rst
# executed command: diff --strip-trailing-cr /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../docs/clang-tidy/checks/list.rst /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.clang-tidy-checks-list.rst
# note: command had no output on stdout or stderr
# RUN: at line 4
/usr/bin/python3 /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../clang-tidy/tool/check_alphabetical_order.py -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.ReleaseNotes.rst
# executed command: /usr/bin/python3 /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../clang-tidy/tool/check_alphabetical_order.py -o /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.ReleaseNotes.rst
# .---command stderr------------
# | 
# | Entries in 'clang-tools-extra/docs/ReleaseNotes.rst' are not alphabetically sorted.
# | Fix the ordering by applying diff printed below.
# | 
# `-----------------------------
# RUN: at line 5
diff --strip-trailing-cr /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../docs/ReleaseNotes.rst /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.ReleaseNotes.rst
# executed command: diff --strip-trailing-cr /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../docs/ReleaseNotes.rst /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.ReleaseNotes.rst
# .---command stdout------------
# | *** /home/gha/actions-runner/_work/llvm-project/llvm-project/clang-tools-extra/test/clang-tidy/infrastructure/../../../docs/ReleaseNotes.rst
# | --- /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/clang/tools/extra/test/clang-tidy/infrastructure/Output/alphabetical-order.test.tmp.ReleaseNotes.rst
# | ***************
# | *** 360,365 ****
# | --- 360,368 ----
# |   
# |   Changes in existing checks
# |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
# | + 
# | + - Fixed google-readability-casting to provide a fix-it for C-style casts of
# | +   nullptr.
# |   
# |   - Improved :doc:`bugprone-chained-comparison
# |     <clang-tidy/checks/bugprone/chained-comparison>` check by adding a
# | ***************
# | *** 543,550 ****
# |     <clang-tidy/checks/modernize/use-nullptr>` check by fixing a crash
# |     on Windows when the check was enabled with a 32-bit :program:`clang-tidy`
# |     binary.
# | ! - Fixed google-readability-casting to provide a fix-it for C-style casts of
# | !   nullptr.
# |   - Improved :doc:`modernize-use-override
# |     <clang-tidy/checks/modernize/use-override>` by fixing an issue where
# |     the check would sometimes suggest inserting ``override`` in an invalid
# | --- 546,552 ----
# |     <clang-tidy/checks/modernize/use-nullptr>` check by fixing a crash
# |     on Windows when the check was enabled with a 32-bit :program:`clang-tidy`
# |     binary.
# | ! 
# |   - Improved :doc:`modernize-use-override
# |     <clang-tidy/checks/modernize/use-override>` by fixing an issue where
# |     the check would sometimes suggest inserting ``override`` in an invalid
# `-----------------------------
# error: command failed with exit status: 1

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/173159