JonasToth added inline comments.

================
Comment at: clang-tidy/modernize/AvoidCArraysCheck.cpp:35
+  const clang::DeclContext *DC = Node.getDeclContext();
+  const clang::FunctionDecl *FD = llvm::dyn_cast<clang::FunctionDecl>(DC);
+  if (!FD)
----------------
lebedev.ri wrote:
> lebedev.ri wrote:
> > JonasToth wrote:
> > > There is `FunctionDecl->castToDeclContext()` which is probably a better 
> > > fit here.
> > I'm guessing you meant `cast*From*DeclContext()`.
> > Interesting, that function is never once used.
> > And it uses `static_cast<>()`..
> I'm not too sure about this.
> Given `ParmVarDecl`, are we sure it's `DeclContext` is *always* 
> `FunctionDecl`?
From Doc "Represents a parameter to a function. " so i think it has always a 
`FunctionDecl` (or subclass) as DeclContext.

Maybe that function is a relict? I just saw it in the docs too and thought it 
makes sense to use it. No opinion on that, @aaron.ballman do you know more on 
that?


Repository:
  rCTE Clang Tools Extra

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D57787/new/

https://reviews.llvm.org/D57787



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