1  typedef __Poly8_t A;
       2  typedef __Poly16_t A; /* { dg-error "conflicting types" } */
       3  typedef __Poly64_t A; /* { dg-error "conflicting types" } */
       4  typedef __Poly128_t A; /* { dg-error "conflicting types" } */
       5  
       6  typedef __Poly8x8_t B;
       7  typedef __Poly16x8_t B; /* { dg-error "conflicting types" } */