text: // RUN: %clang_cc1 -fsyntax-only -verify %s
  
  // This test checks for the various conversions and casting operations
  // with address-space-qualified pointers.
  
  struct A { virtual ~A() {} };
  struct B : A { };
  
  typedef void *void_ptr;
  typedef void __attribute__((address_space(1))) *void_ptr_1;
  typedef void __attribute__((address_space(2))) *void_ptr_2;
  
  typedef int *int_ptr;
  typedef int __attribute__((address_space(1))) *int_ptr_1;
  typedef int __attribute__((address_space(2))) *int_ptr_2;
  
  typedef A *A_ptr;
  typedef A __attribute__((address_space(1))) *A_ptr_1;
  typedef A __attribute__((address_space(2))) *A_ptr_2;
  
  typedef B *B_ptr;
  typedef B __attribute__((address_space(1))) *B_ptr_1;
  typedef B __attribute__((address_space(2))) *B_ptr_2;
  
  void test_const_cast(int_ptr ip, int_ptr_1 ip1, int_ptr_2 ip2,
                       A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
                       const int *cip, 
                       const int __attribute__((address_space(1))) *cip1) {
    // Cannot use const_cast to cast between address spaces, add an
    // address space, or remove an address space.
    (void)const_cast<int_ptr>(ip1); // expected-error{{is not allowed}}
    (void)const_cast<int_ptr>(ip2); // expected-error{{is not allowed}}
    (void)const_cast<int_ptr_1>(ip); // expected-error{{is not allowed}}
    (void)const_cast<int_ptr_1>(ip2); // expected-error{{is not allowed}}
    (void)const_cast<int_ptr_2>(ip); // expected-error{{is not allowed}}
    (void)const_cast<int_ptr_2>(ip1); // expected-error{{is not allowed}}
  
    (void)const_cast<A_ptr>(ap1); // expected-error{{is not allowed}}
    (void)const_cast<A_ptr>(ap2); // expected-error{{is not allowed}}
    (void)const_cast<A_ptr_1>(ap); // expected-error{{is not allowed}}
    (void)const_cast<A_ptr_1>(ap2); // expected-error{{is not allowed}}
    (void)const_cast<A_ptr_2>(ap); // expected-error{{is not allowed}}
    (void)const_cast<A_ptr_2>(ap1); // expected-error{{is not allowed}}
  
    // It's acceptable to cast away constness.
    (void)const_cast<int_ptr>(cip);
    (void)const_cast<int_ptr_1>(cip1);
  }
  
  void test_static_cast(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
                        A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
                        B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2) {
    // Well-formed upcast
    (void)static_cast<A_ptr>(bp);
    (void)static_cast<A_ptr_1>(bp1);
    (void)static_cast<A_ptr_2>(bp2);
  
    // Well-formed downcast
    (void)static_cast<B_ptr>(ap);
    (void)static_cast<B_ptr_1>(ap1);
    (void)static_cast<B_ptr_2>(ap2);
  
    // Well-formed cast to/from void
    (void)static_cast<void_ptr>(ap);
    (void)static_cast<void_ptr_1>(ap1);
    (void)static_cast<void_ptr_2>(ap2);
    (void)static_cast<A_ptr>(vp);
    (void)static_cast<A_ptr_1>(vp1);
    (void)static_cast<A_ptr_2>(vp2);
    
    // Ill-formed upcasts
    (void)static_cast<A_ptr>(bp1); // expected-error{{is not allowed}}
    (void)static_cast<A_ptr>(bp2); // expected-error{{is not allowed}}
    (void)static_cast<A_ptr_1>(bp); // expected-error{{is not allowed}}
    (void)static_cast<A_ptr_1>(bp2); // expected-error{{is not allowed}}
    (void)static_cast<A_ptr_2>(bp); // expected-error{{is not allowed}}
    (void)static_cast<A_ptr_2>(bp1); // expected-error{{is not allowed}}
  
    // Ill-formed downcasts
    (void)static_cast<B_ptr>(ap1); // expected-error{{casts away qualifiers}}
    (void)static_cast<B_ptr>(ap2); // expected-error{{casts away qualifiers}}
    (void)static_cast<B_ptr_1>(ap); // expected-error{{casts away qualifiers}}
    (void)static_cast<B_ptr_1>(ap2); // expected-error{{casts away qualifiers}}
    (void)static_cast<B_ptr_2>(ap); // expected-error{{casts away qualifiers}}
    (void)static_cast<B_ptr_2>(ap1); // expected-error{{casts away qualifiers}}
  
    // Ill-formed cast to/from void
    (void)static_cast<void_ptr>(ap1); // expected-error{{is not allowed}}
    (void)static_cast<void_ptr>(ap2); // expected-error{{is not allowed}}
    (void)static_cast<void_ptr_1>(ap); // expected-error{{is not allowed}}
    (void)static_cast<void_ptr_1>(ap2); // expected-error{{is not allowed}}
    (void)static_cast<void_ptr_2>(ap); // expected-error{{is not allowed}}
    (void)static_cast<void_ptr_2>(ap1); // expected-error{{is not allowed}}
    (void)static_cast<A_ptr>(vp1); // expected-error{{casts away qualifiers}}
    (void)static_cast<A_ptr>(vp2); // expected-error{{casts away qualifiers}}
    (void)static_cast<A_ptr_1>(vp); // expected-error{{casts away qualifiers}}
    (void)static_cast<A_ptr_1>(vp2); // expected-error{{casts away qualifiers}}
    (void)static_cast<A_ptr_2>(vp); // expected-error{{casts away qualifiers}}
    (void)static_cast<A_ptr_2>(vp1); // expected-error{{casts away qualifiers}}
  }
  
  void test_dynamic_cast(A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
                         B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2) {
    // Well-formed upcast
    (void)dynamic_cast<A_ptr>(bp);
    (void)dynamic_cast<A_ptr_1>(bp1);
    (void)dynamic_cast<A_ptr_2>(bp2);
  
    // Well-formed downcast
    (void)dynamic_cast<B_ptr>(ap);
    (void)dynamic_cast<B_ptr_1>(ap1);
    (void)dynamic_cast<B_ptr_2>(ap2);
  
    // Ill-formed upcasts
    (void)dynamic_cast<A_ptr>(bp1); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<A_ptr>(bp2); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<A_ptr_1>(bp); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<A_ptr_1>(bp2); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<A_ptr_2>(bp); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<A_ptr_2>(bp1); // expected-error{{casts away qualifiers}}
  
    // Ill-formed downcasts
    (void)dynamic_cast<B_ptr>(ap1); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<B_ptr>(ap2); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<B_ptr_1>(ap); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<B_ptr_1>(ap2); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<B_ptr_2>(ap); // expected-error{{casts away qualifiers}}
    (void)dynamic_cast<B_ptr_2>(ap1); // expected-error{{casts away qualifiers}}
  }
  
  void test_reinterpret_cast(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
                             A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
                             B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2,
                             const void __attribute__((address_space(1))) *cvp1) {
    // reinterpret_cast can be used to cast to a different address space.
    (void)reinterpret_cast<A_ptr>(ap1);
    (void)reinterpret_cast<A_ptr>(ap2);
    (void)reinterpret_cast<A_ptr>(bp);
    (void)reinterpret_cast<A_ptr>(bp1);
    (void)reinterpret_cast<A_ptr>(bp2);
    (void)reinterpret_cast<A_ptr>(vp);
    (void)reinterpret_cast<A_ptr>(vp1);
    (void)reinterpret_cast<A_ptr>(vp2);
    (void)reinterpret_cast<A_ptr_1>(ap);
    (void)reinterpret_cast<A_ptr_1>(ap2);
    (void)reinterpret_cast<A_ptr_1>(bp);
    (void)reinterpret_cast<A_ptr_1>(bp1);
    (void)reinterpret_cast<A_ptr_1>(bp2);
    (void)reinterpret_cast<A_ptr_1>(vp);
    (void)reinterpret_cast<A_ptr_1>(vp1);
    (void)reinterpret_cast<A_ptr_1>(vp2);
  
    // ... but don't try to cast away constness!
    (void)reinterpret_cast<A_ptr_2>(cvp1); // expected-error{{casts away qualifiers}}
  }
  
  void test_cstyle_cast(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
                        A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
                        B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2,
                        const void __attribute__((address_space(1))) *cvp1) {
    // C-style casts are the wild west of casts.
    (void)(A_ptr)(ap1);
    (void)(A_ptr)(ap2);
    (void)(A_ptr)(bp);
    (void)(A_ptr)(bp1);
    (void)(A_ptr)(bp2);
    (void)(A_ptr)(vp);
    (void)(A_ptr)(vp1);
    (void)(A_ptr)(vp2);
    (void)(A_ptr_1)(ap);
    (void)(A_ptr_1)(ap2);
    (void)(A_ptr_1)(bp);
    (void)(A_ptr_1)(bp1);
    (void)(A_ptr_1)(bp2);
    (void)(A_ptr_1)(vp);
    (void)(A_ptr_1)(vp1);
    (void)(A_ptr_1)(vp2);
    (void)(A_ptr_2)(cvp1);
  }
  
  void test_implicit_conversion(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
                                A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
                                B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2) {
    // Well-formed conversions
    void_ptr vpA = ap;
    void_ptr_1 vp_1A = ap1;
    void_ptr_2 vp_2A = ap2;
    A_ptr ap_A = bp;
    A_ptr_1 ap_A1 = bp1;
    A_ptr_2 ap_A2 = bp2;
  
    // Ill-formed conversions
    void_ptr vpB = ap1; // expected-error{{cannot initialize a variable of type}}
    void_ptr_1 vp_1B = ap2; // expected-error{{cannot initialize a variable of type}}
    A_ptr ap_B = bp1; // expected-error{{cannot initialize a variable of type}}
    A_ptr_1 ap_B1 = bp2; // expected-error{{cannot initialize a variable of type}}
  }
  