[clang] [Clang][NFC] Use const ASTContext reference in Decl Create methods (PR #185401)

[Aaron Ballman via cfe-commits]

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@@ -138,12 +138,12 @@ class TranslationUnitDecl : public Decl,
   using redeclarable_base::redecls_begin;
   using redeclarable_base::redecls_end;
 
-  ASTContext &getASTContext() const { return Ctx; }
+  ASTContext &getASTContext() const { return const_cast<ASTContext &>(Ctx); }
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AaronBallman wrote:

I would expect this interface to return a `const ASTContext &` because the member function is const, and we'd have a non-`const` overload which returns the `ASTContext &`.

https://github.com/llvm/llvm-project/pull/185401