Ignore more warnings for generated protobuf files.

[owent]

Is your feature request related to a problem?
We enable more warnings in our project and some of them will be triggered by generated protobuf files.(-Wconversion, -Wshadow, -Wsuggest-override for gCC/Clang, C4484, C4485, C5037, C6001, C6244, C6246 for MSVC and so on.).And bcause we enable -Werror and /WX in our project , these warning will be converted to errors when compiling.

Can I add codes to ingnore these warning in protobuf_include_prefix.h ?

Describe the solution you'd like

Exclude these warnings in protobuf_include_prefix.h .

[lalitb]

Just curious, if these warnings are triggered by protobuf files, and as of now not ignored in protobuf_include_prefix.h, do we know why are they not failing our maintainer mode CI tests ?

[owent]

These warnings are not included in -Wall and -Wextra.

[lalitb]

Ok thanks. Yes, I think we can ignore these warnings in protobuf_include_prefix.h.