test/SemaTemplate/ext-vector-type.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T, unsigned Length> 
struct make1 { 
  typedef T __attribute__((ext_vector_type(Length))) type; 
};

void test_make1() {
  make1<int, 5>::type x;
  x.x = 4;
}

template<typename T, unsigned Length> 
struct make2 { 
  typedef T __attribute__((ext_vector_type(Length))) type; // expected-error{{zero vector size}}
};

int test_make2() {
  make2<int, 0> x; // expected-note{{in instantiation of}} 
}

template<typename T, unsigned Length> 
struct make3 { 
  typedef T __attribute__((ext_vector_type(Length))) type; // expected-error{{invalid vector type 'struct s'}}
};

struct s {};

int test_make3() {
  make3<s, 3>x; // expected-note{{in instantiation of}} 
}

template<typename T, T Length> 
struct make4 { 
  typedef T __attribute__((ext_vector_type(Length))) type; 
};

int test_make4() {
  make4<int, 4>::type x;
  x.w = 7;
}

typedef int* int_ptr;
template<unsigned Length>
struct make5 {
  typedef int_ptr __attribute__((ext_vector_type(Length))) type; // expected-error{{invalid vector type}}             
};

template<int Length>
struct make6 {
  typedef int __attribute__((ext_vector_type(Length))) type;
};

int test_make6() {
  make6<4>::type x;
  x.w = 7;

  make6<2>::type y;
  y.x = -1;
  y.w = -1; // expected-error{{vector component access exceeds type}}
}