MicrosoftExtensions.c revision 83e0995105222b078a57e1e20ef71fbfd0f67d3d 
1// RUN: %clang_cc1 %s -fsyntax-only -Wno-unused-value -Wmicrosoft -verify -fms-extensions
2
3
4struct A
5{
6   int a[];  /* expected-warning {{flexible array member 'a' in otherwise empty struct is a Microsoft extension}} */
7};
8
9struct C {
10   int l;
11   union {
12       int c1[];   /* expected-warning {{flexible array member 'c1' in a union is a Microsoft extension}}  */
13       char c2[];  /* expected-warning {{flexible array member 'c2' in a union is a Microsoft extension}} */
14   };
15};
16
17
18struct D {
19   int l;
20   int D[];
21};
22
23
24enum ENUM1; // expected-warning {{forward references to 'enum' types are a Microsoft extension}}
25enum ENUM1 var1 = 3;
26enum ENUM1* var2 = 0;
27
28
29enum ENUM2 {
30  ENUM2_a = (enum ENUM2) 4,
31  ENUM2_b = 0x9FFFFFFF, // expected-warning {{enumerator value is not representable in the underlying type 'int'}}
32  ENUM2_c = 0x100000000 // expected-warning {{enumerator value is not representable in the underlying type 'int'}}
33};
34
35
36
37
38typedef struct notnested {
39  long bad1;
40  long bad2;
41} NOTNESTED;
42
43
44typedef struct nested1 {
45  long a;
46  struct notnested var1;
47  NOTNESTED var2;
48} NESTED1;
49
50struct nested2 {
51  long b;
52  NESTED1;  // expected-warning {{anonymous structs are a Microsoft extension}}
53};
54
55struct test {
56  int c;
57  struct nested2;   // expected-warning {{anonymous structs are a Microsoft extension}}
58};
59
60void foo()
61{
62  struct test var;
63  var.a;
64  var.b;
65  var.c;
66  var.bad1;   // expected-error {{no member named 'bad1' in 'struct test'}}
67  var.bad2;   // expected-error {{no member named 'bad2' in 'struct test'}}
68}
69
70// Enumeration types with a fixed underlying type.
71const int seventeen = 17;
72typedef int Int;
73
74struct X0 {
75  enum E1 : Int { SomeOtherValue } field;  // expected-warning{{enumeration types with a fixed underlying type are a Microsoft extension}}
76  enum E1 : seventeen;
77};
78
79enum : long long {  // expected-warning{{enumeration types with a fixed underlying type are a Microsoft extension}}
80  SomeValue = 0x100000000
81};
82
83
84void pointer_to_integral_type_conv(char* ptr) {
85   char ch = (char)ptr;
86   short sh = (short)ptr;
87   ch = (char)ptr;
88   sh = (short)ptr;
89}
90