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      1 // no PCH
      2 // RUN: %clang_cc1 -include %s -include %s -fsyntax-only %s
      3 // full PCH
      4 // RUN: %clang_cc1 -chain-include %s -chain-include %s -fsyntax-only %s
      5 #if !defined(PASS1)
      6 #define PASS1
      7 
      8 namespace foo {} // no external storage
      9 
     10 #elif !defined(PASS2)
     11 #define PASS2
     12 
     13 namespace foo {
     14   void bar();
     15 }
     16 
     17 #else
     18 // PASS3
     19 
     20 void test() {
     21   foo::bar(); // no-error
     22 }
     23 
     24 #endif
     25