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      1 // RUN: %clang_cc1 -fsyntax-only -verify %s
      2 
      3 void f();
      4 
      5 // Test typeof(expr) canonicalization
      6 template<typename T>
      7 void f0(T x, __typeof__(f(x)) y) { } // expected-note{{previous}}
      8 
      9 template<typename T>
     10 void f0(T x, __typeof__((f)(x)) y) { }
     11 
     12 template<typename U>
     13 void f0(U u, __typeof__(f(u))) { } // expected-error{{redefinition}}
     14 
     15 // Test insane typeof(expr) overload set canonicalization
     16 void f(int);
     17 void f(double);
     18 
     19 template<typename T, T N>
     20 void f0a(T x, __typeof__(f(N)) y) { } // expected-note{{previous}}
     21 
     22 void f(int);
     23 
     24 template<typename T, T N>
     25 void f0a(T x, __typeof__(f(N)) y) { } // expected-error{{redefinition}}
     26 
     27 void f(float);
     28 
     29 // Test dependently-sized array canonicalization
     30 template<typename T, int N, int M>
     31 void f1(T (&array)[N + M]) { } // expected-note{{previous}}
     32 
     33 template<typename T, int N, int M>
     34 void f1(T (&array)[M + N]) { }
     35 
     36 template<typename T, int M, int N>
     37 void f1(T (&array)[M + N]) { } // expected-error{{redefinition}}
     38 
     39 // Test dependently-sized extended vector type canonicalization
     40 template<typename T, int N, int M>
     41 struct X2 {
     42   typedef T __attribute__((ext_vector_type(N))) type1;
     43   typedef T __attribute__((ext_vector_type(M))) type2;
     44   typedef T __attribute__((ext_vector_type(N))) type3;
     45 
     46   void f0(type1); // expected-note{{previous}}
     47   void f0(type2);
     48   void f0(type3); // expected-error{{redeclared}}
     49 };
     50 
     51 // Test canonicalization doesn't conflate different literal suffixes.
     52 template<typename T> void literal_suffix(int (&)[sizeof(T() + 0)]) {}
     53 template<typename T> void literal_suffix(int (&)[sizeof(T() + 0L)]) {}
     54 template<typename T> void literal_suffix(int (&)[sizeof(T() + 0LL)]) {}
     55 template<typename T> void literal_suffix(int (&)[sizeof(T() + 0.f)]) {}
     56 template<typename T> void literal_suffix(int (&)[sizeof(T() + 0.)]) {}
     57 template<typename T> void literal_suffix(int (&)[sizeof(T() + 0.l)]) {}
     58