[PATCH] D19468: Disallow duplication of imported entities (improved implementation)

[Amjad Aboud via llvm-commits]

aaboud added a comment.

I am not much familiar with the AST part, but I assume there is reuse of previous generated DCL, even if it has same data.

Here is a small example that leads into duplication in AST DCLs.
You may run the following command line:

  clang -cc1 -ast-dump -o - -O0 TestIM.cpp

TestIM.cpp
----------

  #include "TestIM.h"
  #include "TestIM.h"



TestIM.h
--------

  namespace X {
    typedef int MyINT_t;
  }
  
  namespace Y {
    using X::MyINT_t;
  }


http://reviews.llvm.org/D19468