[cfe-dev] Adding some modernize checks to default Clang-tidy configuration

[Eugene Zelenko via cfe-dev]

Hi!

I think will be good idea to add some modernize checks to default
Clang-tidy configuration for LLVM, Clang, LLD, Compiler-rt and Clang
extra tools. This will help to maintain code base compliant with
C++11.

Proposed checks are:

modernize-use-override
modernize-use-nullptr
modernize-redundant-void-arg
modernize-shrink-to-fit

I fixed that warnings in aforementioned packages, and only Compiler-rt
still have some because my patches were not merged yet.

Additional efforts are needed to fix other modernize checks warnings.

Eugene.