balazske marked an inline comment as done.
balazske added inline comments.

================
Comment at: include/clang/AST/ASTImporter.h:317
+                std::shared_ptr<ASTImporterSharedState> SharedState = nullptr,
+                ASTUnit *Unit = nullptr);
 
----------------
martong wrote:
> What if we provided an additional constructor where we take over the ASTUnits 
> instead of the ASTContexts?
> Then we would not need to pass the FileManagers neither.
> ```
>     ASTImporter(ASTUnit &ToUnit, 
>                 ASTUnit &FromUnit,
>                 bool MinimalImport,
>                 std::shared_ptr<ASTImporterSharedState> SharedState = nullptr,
> ```
Is the `SharedState==nullptr` case only for LLDB? If yes then it is possible to 
have a "LLDB" constructor when no shared state and no ASTUnit is needed. And 
another for CTU case when a From and To ASTUnit is specified and a shared state 
(theoretically minimal can be true in any case but probably only true for 
LLDB?).


Repository:
  rC Clang

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64554/new/

https://reviews.llvm.org/D64554



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