[analyzer] Make NonNullParamChecker as dependency for…

Authored by martong on May 5 2020, 7:37 AM.


[analyzer] Make NonNullParamChecker as dependency for StdCLibraryFunctionsChecker

If a given parameter in a FunctionDecl has a nonull attribute then the NonNull
constraint in StdCLibraryFunctionsChecker has the same effect as
NonNullParamChecker. I think it is better to emit diagnostics from the simpler
checker. By making NonNullParamChecker as a dependency, in these cases it will
be the first to emit a diagnostic and to stop the analysis on that path.

Reviewers: Szelethus, NoQ, baloghadamsoftware, balazske, steakhal

Subscribers: whisperity, xazax.hun, szepet, rnkovacs, a.sidorin, mikhail.ramalho, donat.nagy, dkrupp, gamesh411, Charusso, ASDenysPetrov, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D79420