1 // RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic -std=c11
2 
3 __auto_type a = 5; // expected-warning {{'__auto_type' is a GNU extension}}
4 __extension__ __auto_type a1 = 5;
5 #pragma clang diagnostic ignored "-Wgnu-auto-type"
6 __auto_type b = 5.0;
7 __auto_type c = &b;
8 __auto_type d = (struct {int a;}) {5};
9 _Static_assert(__builtin_types_compatible_p(__typeof(a), int), "");
10 __auto_type e = e; // expected-error {{variable 'e' declared with deduced type '__auto_type' cannot appear in its own initializer}}
11 
12 struct s { __auto_type a; }; // expected-error {{'__auto_type' not allowed in struct member}}
13 
14 __auto_type f = 1, g = 1.0; // expected-error {{'__auto_type' deduced as 'int' in declaration of 'f' and deduced as 'double' in declaration of 'g'}}
15 
h()16 __auto_type h() {} // expected-error {{'__auto_type' not allowed in function return type}}
17 
i()18 int i() {
19   struct bitfield { int field:2; };
20   __auto_type j = (struct bitfield){1}.field; // expected-error {{cannot pass bit-field as __auto_type initializer in C}}
21 
22 }
23 
k(l)24 int k(l)
25 __auto_type l; // expected-error {{'__auto_type' not allowed in K&R-style function parameter}}
26 {}
27