1 // RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wno-gnu
2 // RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wgnu
3 // RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wno-gnu \
4 // RUN:   -Wgnu-anonymous-struct -Wredeclared-class-member \
5 // RUN:   -Wgnu-flexible-array-union-member -Wgnu-folding-constant \
6 // RUN:   -Wgnu-empty-struct
7 // RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wgnu \
8 // RUN:   -Wno-gnu-anonymous-struct -Wno-redeclared-class-member \
9 // RUN:   -Wno-gnu-flexible-array-union-member -Wno-gnu-folding-constant \
10 // RUN:   -Wno-gnu-empty-struct
11 // Additional disabled tests:
12 // %clang_cc1 -fsyntax-only -verify %s -DANONYMOUSSTRUCT -Wno-gnu -Wgnu-anonymous-struct
13 // %clang_cc1 -fsyntax-only -verify %s -DREDECLAREDCLASSMEMBER -Wno-gnu -Wredeclared-class-member
14 // %clang_cc1 -fsyntax-only -verify %s -DFLEXIBLEARRAYUNIONMEMBER -Wno-gnu -Wgnu-flexible-array-union-member
15 // %clang_cc1 -fsyntax-only -verify %s -DFOLDINGCONSTANT -Wno-gnu -Wgnu-folding-constant
16 // %clang_cc1 -fsyntax-only -verify %s -DEMPTYSTRUCT -Wno-gnu -Wgnu-empty-struct
17 
18 #if NONE
19 // expected-no-diagnostics
20 #endif
21 
22 
23 #if ALL || ANONYMOUSSTRUCT
24 // expected-warning@+5 {{anonymous structs are a GNU extension}}
25 #endif
26 
27 struct as {
28   int x;
29   struct {
30     int a;
31     float b;
32   };
33 };
34 
35 
36 #if ALL || REDECLAREDCLASSMEMBER
37 // expected-note@+6 {{previous declaration is here}}
38 // expected-warning@+6 {{class member cannot be redeclared}}
39 #endif
40 
41 namespace rcm {
42   class A {
43     class X;
44     class X;
45     class X {};
46   };
47 }
48 
49 
50 #if ALL || FLEXIBLEARRAYUNIONMEMBER
51 // expected-warning@+6 {{flexible array member 'c1' in a union is a GNU extension}}
52 #endif
53 
54 struct faum {
55    int l;
56    union {
57        int c1[];
58    };
59 };
60 
61 
62 #if ALL || FOLDINGCONSTANT
63 // expected-warning@+4 {{in-class initializer for static data member is not a constant expression; folding it to a constant is a GNU extension}}
64 #endif
65 
66 struct fic {
67   static const int B = int(0.75 * 1000 * 1000);
68 };
69 
70 
71 #if ALL || EMPTYSTRUCT
72 // expected-warning@+3 {{flexible array member 'a' in otherwise empty struct is a GNU extension}}
73 #endif
74 
75 struct ofam {int a[];};
76 
77