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      1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++11 -emit-pch -o %t.1 %s
      2 // RUN: %clang_cc1 -triple x86_64-linux-gnu -error-on-deserialized-decl S1_keyfunc -error-on-deserialized-decl S3 -error-on-deserialized-decl DND -std=c++11 -include-pch %t.1 -emit-pch -o %t.2 %s
      3 // RUN: %clang_cc1 -triple x86_64-linux-gnu -error-on-deserialized-decl S1_method -error-on-deserialized-decl S3 -error-on-deserialized-decl DND -std=c++11 -include-pch %t.2 -emit-llvm-only %s
      4 
      5 // FIXME: Why does this require an x86 target?
      6 // REQUIRES: x86-registered-target
      7 
      8 #ifndef HEADER1
      9 #define HEADER1
     10 // Header.
     11 
     12 struct S1 {
     13   void S1_method();
     14   virtual void S1_keyfunc();
     15 };
     16 
     17 struct S3 {};
     18 
     19 struct S2 {
     20   operator S3();
     21 };
     22 
     23 namespace vars {
     24   constexpr int f() { return 0; }
     25   struct X { constexpr X() {} };
     26   namespace v1 { const int DND = 0; }
     27   namespace v2 { constexpr int DND = f(); }
     28   namespace v3 { static X DND; }
     29   namespace v4 { constexpr X DND = {}; }
     30 }
     31 
     32 #elif !defined(HEADER2)
     33 #define HEADER2
     34 
     35 // Chained PCH.
     36 S1 *s1;
     37 S2 *s2;
     38 
     39 #else
     40 
     41 // Using the headers.
     42 
     43 void test(S1*, S2*) {
     44 }
     45 
     46 #endif
     47