martong added a comment.

In D77641#1969412 <https://reviews.llvm.org/D77641#1969412>, @NoQ wrote:

> So you only do the lookup in the global scope? What about `namespace std`?
>
> Do you also plan to support class methods by looking up the class first and 
> then looking up the method in the class?


Yes, I had been planning with those. When it comes to the point where we'd like 
to add summaries for C++ functions (in namespaces or member functions) then we 
can add a new overloaded `operator()` to `AddToFunctionSummaryMap`. In this new 
function we could handle a fully qualified name (e.g. `std::map::insert`) by 
doing the lookup in each found `DeclContext` starting from the 
`TranslationUnitDecl`. (Naturally, we'd not support ADL or `using` declaration 
kind of lookup modifications, only fully qualified names would be allowed.) 
Note that we could give a summary only to those functions that can be found by 
qualified [Obj]C/C++ lookup. So, e.g. functions in unnamed namespaces or 
in-class defined friend functions are out of this game.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77641/new/

https://reviews.llvm.org/D77641



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