Add -misc-use-anonymous-namespace to .clang-tidy

[barannikov88]

Summary

This is at odds with the coding standard.
Quoting https://llvm.org/docs/CodingStandards.html#anonymous-namespaces

Because of this, we have a simple guideline: make anonymous namespaces
as small as possible, and only use them for class declarations.

[barannikov88]

ping

[MaskRay]

.clang-tidy

1

Move before -misc-no-recursion for an alphabetical order.

[barannikov88]

@MaskRay Do you mean that 'no-' and/or 'use-' should be ignored for the purpose of lexicographical comparison? (I don't mind, just in case.)

[MaskRay]

In D149664#4323540, @barannikov88 wrote:

@MaskRay Do you mean that 'no-' and/or 'use-' should be ignored for the purpose of lexicographical comparison? (I don't mind, just in case.)

Ah, sorry. I think your order is correct.

I agree that our coding style is contrary to misc-use-anonymous-namespace and should not use misc-use-anonymous-namespace.

.clang-tidy

-Checks: '-*,clang-diagnostic-*,llvm-*,misc-*,-misc-const-correctness,-misc-unused-parameters,-misc-non-private-member-variables-in-classes,-misc-no-recursion,readability-identifier-naming'
+Checks: '-*,clang-diagnostic-*,llvm-*,misc-*,-misc-const-correctness,-misc-unused-parameters,-misc-non-private-member-variables-in-classes,-misc-no-recursion,-misc-use-anonymous-namespace,readability-identifier-naming'
 CheckOptions:
   - key:             readability-identifier-naming.ClassCase
     value:           CamelCase
   - key:             readability-identifier-naming.EnumCase
     value:           CamelCase
   - key:             readability-identifier-naming.FunctionCase
     value:           camelBack
   # Exclude from scanning as this is an exported symbol used for fuzzing