5 …auto undefined;     // expected-error {{declaration of variable 'undefined' with deduced type 'aut…  in test_basic_types()
6   auto auto_int = 4;  in test_basic_types()
7   auto auto_long = 4UL;  in test_basic_types()
8   auto int auto_int_ts = 12;  in test_basic_types()
9   signed auto a = 1L; // expected-error {{'auto' cannot be signed or unsigned}}  in test_basic_types()
16   _Complex auto i = 12.0; // expected-error {{'_Complex auto' is invalid}}  in test_complex_types()
20   auto t = ({ // expected-warning {{use of GNU statement expression extension}}  in test_gnu_extensions()
21     auto b = 12;  in test_gnu_extensions()
28   auto auto_size = sizeof(auto);  // expected-error {{expected expression}}  in test_sizeof_typeof()
29   typeof(auto) tpof = 4;          // expected-error {{expected expression}}  in test_sizeof_typeof()
33   auto int_cast = (int)(4 + 3);  in test_casts()
34   auto double_cast = (double)(1 / 3);  in test_casts()
35   auto long_cast = (long)(4UL + 3UL);  in test_casts()
36   auto auto_cast = (auto)(4 + 3); // expected-error {{expected expression}}  in test_casts()
44   auto int_cl = (int){13};  in test_compound_literral()
45   auto double_cl = (double){2.5};  in test_compound_literral()
46   auto array[] = { 1, 2, 3 }; // expected-error {{cannot use 'auto' with array in C}}  in test_compound_literral()
48   auto auto_cl = (auto){13};  // expected-error {{expected expression}}  in test_compound_literral()
56   auto a = array;  in test_array_pointers()
57   auto b = &array;  in test_array_pointers()
66   auto result = (typeof(typeof_target())){12};  in test_typeof()
72   const auto a = 12;  in test_qualifiers()
73   auto b = y;  in test_qualifiers()
74   static auto c = 1UL;  in test_qualifiers()
88   auto str = "this is a string";  in test_strings()
89 …auto str2[] = "this is a string";       // expected-warning {{type inference of a declaration othe…  in test_strings()
90   auto (str3) = "this is a string";  in test_strings()
91   auto (((str4))) = "this is a string";  in test_strings()
100   auto a = 12;  in test_pointers()
101 …auto *ptr = &a;                         // expected-warning {{type inference of a declaration othe…  in test_pointers()
102 …auto *str = "this is a string";         // expected-warning {{type inference of a declaration othe…  in test_pointers()
103 …const auto *str2 = "this is a string";  // expected-warning {{type inference of a declaration othe…  in test_pointers()
104 …auto *b = &a;                           // expected-warning {{type inference of a declaration othe…  in test_pointers()
106   auto nptr = nullptr;  in test_pointers()
117 …extern void foo(int a, int array[({ auto x = 12; x;})]);  // expected-warning {{use of GNU stateme…  in test_prototypes()
124 …auto a = a * a; // expected-error {{variable 'a' declared with deduced type 'auto' cannot appear i…  in test_scopes()
125 …expected-error {{variable 'a' declared with deduced type 'auto' cannot appear in its own initializ…  in test_scopes()
128     auto b = a * a;  in test_scopes()
129     auto a = b;  in test_scopes()
136 [[clang::overloadable]] auto test(auto x) { // expected-error {{'auto' not allowed in function prot…  in test()
137 …                                      expected-error {{'auto' not allowed in function return type}}  in test()