[cfe-dev] SA Checker language options

[Endre Fulop via cfe-dev]

Hi,

I am maintaining some SA checkers, which are only relevant to specific
languages (C++), and crash when called on irrelevant sources (C).

Are there any best practices, or guidelines regarding the language
assessment of the current translation unit?

I am aware that GTestChecker uses its register method to check LangOpts to
only register in case the current TU is C++. I have also encountered
sporadic LangOpts checks inside the checker callback methods. We could also
query the build system to map TU-s to language categories, however, inside
the clang framework, a more cognizant decision could be made.

I would like to have your suggestions on this matter.

Regards,
Endre
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