1 // RUN: %clang_cc1 -std=c99 -E %s -o - | FileCheck --check-prefix=CHECK-PED-NONE %s
2 // RUN: %clang_cc1 -std=c99 -pedantic-errors -E %s -o - | FileCheck --check-prefix=CHECK-PED-ERR %s
3 
4 // CHECK-PED-NONE: no_dummy_extension
5 #if !__has_extension(dummy_extension)
6 int no_dummy_extension();
7 #endif
8 
9 // Arbitrary feature to test that has_extension is a superset of has_feature
10 // CHECK-PED-NONE: attribute_overloadable
11 #if __has_extension(attribute_overloadable)
12 int attribute_overloadable();
13 #endif
14 
15 // CHECK-PED-NONE: has_c_static_assert
16 // CHECK-PED-ERR: no_c_static_assert
17 #if __has_extension(c_static_assert)
18 int has_c_static_assert();
19 #else
20 int no_c_static_assert();
21 #endif
22 
23 // CHECK-PED-NONE: has_c_generic_selections
24 // CHECK-PED-ERR: no_c_generic_selections
25 #if __has_extension(c_generic_selections)
26 int has_c_generic_selections();
27 #else
28 int no_c_generic_selections();
29 #endif
30 
31 // CHECK-PED-NONE: has_c_alignas
32 // CHECK-PED-ERR: no_c_alignas
33 #if __has_extension(c_alignas)
34 int has_c_alignas();
35 #else
36 int no_c_alignas();
37 #endif
38 
39 // CHECK-PED-NONE: has_c_alignof
40 // CHECK-PED-ERR: no_c_alignof
41 #if __has_extension(c_alignof)
42 int has_c_alignof();
43 #else
44 int no_c_alignof();
45 #endif
46 
47 // Arbitrary feature to test that the extension name can be surrounded with
48 // double underscores.
49 // CHECK-PED-NONE: has_double_underscores
50 #if __has_extension(__c_alignas__)
51 int has_double_underscores();
52 #endif
53