[clang-tools-extra] [clang-tidy] Add readability-pointer-to-ref check (PR #182068)

[via cfe-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

The build failed before running any tests. Click on a failure below to see the details.

<details>
<summary>[code=1] tools/clang/tools/extra/clang-tidy/readability/CMakeFiles/obj.clangTidyReadabilityModule.dir/PointerToRefCheck.cpp.obj</summary>

```
FAILED: [code=1] tools/clang/tools/extra/clang-tidy/readability/CMakeFiles/obj.clangTidyReadabilityModule.dir/PointerToRefCheck.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -DCLANG_BUILD_STATIC -DUNICODE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_GLIBCXX_ASSERTIONS -D_HAS_EXCEPTIONS=0 -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Itools\clang\tools\extra\clang-tidy\readability -IC:\_work\llvm-project\llvm-project\clang-tools-extra\clang-tidy\readability -Itools\clang\tools\extra\clang-tidy -IC:\_work\llvm-project\llvm-project\clang\include -Itools\clang\include -Iinclude -IC:\_work\llvm-project\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /bigobj /permissive- -Werror=unguarded-availability-new /W4  -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported /Gw /O2 /Ob2  -MD -UNDEBUG /EHs-c- /GR- -std:c++17 /showIncludes /Fotools\clang\tools\extra\clang-tidy\readability\CMakeFiles\obj.clangTidyReadabilityModule.dir\PointerToRefCheck.cpp.obj /Fdtools\clang\tools\extra\clang-tidy\readability\LLVMSupport.dir\LLVMSupport.pdb -c -- C:\_work\llvm-project\llvm-project\clang-tools-extra\clang-tidy\readability\PointerToRefCheck.cpp
C:\_work\llvm-project\llvm-project\clang-tools-extra\clang-tidy\readability\PointerToRefCheck.cpp(182,36): error: use of undeclared identifier 'isOverloadedOperator'; did you mean 'OverloadedOperatorKind'?
182 |               unless(cxxMethodDecl(isOverloadedOperator())))
|                                    ^~~~~~~~~~~~~~~~~~~~
C:\_work\llvm-project\llvm-project\clang\include\clang/AST/TemplateName.h(36,6): note: 'OverloadedOperatorKind' declared here
36 | enum OverloadedOperatorKind : int;
|      ^
1 error generated.
```
</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/182068