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      1 // RUN: %clang_cc1 -fsyntax-only -verify %s
      2 
      3 // Tests that dependent expressions are always allowed, whereas non-dependent
      4 // are checked as usual.
      5 
      6 #include <stddef.h>
      7 
      8 // Fake typeid, lacking a typeinfo header.
      9 namespace std { class type_info {}; }
     10 
     11 struct dummy {}; // expected-note 3 {{candidate constructor (the implicit copy constructor)}}
     12 
     13 template<typename T>
     14 int f0(T x) {
     15   return (sizeof(x) == sizeof(int))? 0 : (sizeof(x) == sizeof(double))? 1 : 2;
     16 }
     17 
     18 template <typename T, typename U>
     19 T f1(T t1, U u1, int i1)
     20 {
     21   T t2 = i1;
     22   t2 = i1 + u1;
     23   ++u1;
     24   u1++;
     25   int i2 = u1;
     26 
     27   i1 = t1[u1];
     28   i1 *= t1;
     29 
     30   i1(u1, t1); // error
     31   u1(i1, t1);
     32 
     33   U u2 = (T)i1;
     34   static_cast<void>(static_cast<U>(reinterpret_cast<T>(
     35     dynamic_cast<U>(const_cast<T>(i1)))));
     36 
     37   new U(i1, t1);
     38   new int(t1, u1);
     39   new (t1, u1) int;
     40   delete t1;
     41 
     42   dummy d1 = sizeof(t1); // expected-error {{no viable conversion}}
     43   dummy d2 = offsetof(T, foo); // expected-error {{no viable conversion}}
     44   dummy d3 = __alignof(u1); // expected-error {{no viable conversion}}
     45   i1 = typeid(t1); // expected-error {{assigning to 'int' from incompatible type 'const std::type_info'}}
     46 
     47   return u1;
     48 }
     49 
     50 template<typename T>
     51 void f2(__restrict T x) {} // expected-note {{substitution failure [with T = int]: restrict requires a pointer or reference ('int' is invalid}}
     52 
     53 void f3() {
     54   f2<int*>(0);
     55   f2<int>(0); // expected-error {{no matching function for call to 'f2'}}
     56 }
     57