struct.c revision 292d4f9a1aaa37ad052ed50896c803fa3a98f77c 
1// RUN: clang -triple i386-unknown-unknown %s -emit-llvm -o -
2
3struct  {
4  int x;
5  int y;
6} point;
7
8void fn1() {
9  point.x = 42;
10}
11
12/* Nested member */
13struct  {
14  struct {
15    int a;
16    int b;
17  } p1;
18} point2;
19
20void fn2() {
21  point2.p1.a = 42;
22}
23
24/* Indirect reference */
25typedef struct __sf {
26 unsigned char *c;
27 short flags;
28} F;
29
30typedef struct __sf2 {
31  F *ff;
32} F2;
33
34int fn3(F2 *c) {
35  if (c->ff->c >= 0)
36    return 1;
37  else
38    return 0;
39}
40
41/* Nested structs */
42typedef struct NA {
43  int data;
44  struct NA *next;
45} NA;
46void f1() {  NA a; }
47
48typedef struct NB {
49  int d1;
50  struct _B2 {
51    int d2;
52    struct NB *n2;
53  } B2;
54} NB;
55
56void f2() { NB b; }
57
58extern NB *f3();
59void f4() {
60  f3()->d1 = 42;
61}
62
63void f5() {
64  (f3())->d1 = 42;
65}
66
67/* Function calls */
68typedef struct {
69  int location;
70  int length;
71} range;
72extern range f6();
73void f7()
74{
75  range r = f6();
76}
77
78/* Member expressions */
79typedef struct {
80  range range1;
81  range range2;
82} rangepair;
83
84void f8()
85{
86  rangepair p;
87
88  range r = p.range1;
89}
90
91void f9(range *p)
92{
93  range r = *p;
94}
95
96void f10(range *p)
97{
98  range r = p[0];
99}
100
101/* _Bool types */
102
103struct _w
104{
105  short a,b;
106  short c,d;
107  short e,f;
108  short g;
109
110  unsigned int h,i;
111
112  _Bool j,k;
113} ws;
114
115/* Implicit casts (due to typedefs) */
116typedef struct _a
117{
118  int a;
119} a;
120
121void f11()
122{
123    struct _a a1;
124    a a2;
125
126    a1 = a2;
127    a2 = a1;
128}
129
130/* Implicit casts (due to const) */
131void f12()
132{
133	struct _a a1;
134	const struct _a a2;
135
136	a1 = a2;
137}
138
139/* struct initialization */
140struct a13 {int b; int c;};
141struct a13 c13 = {5};
142typedef struct a13 a13;
143struct a14 { short a; int b; } x = {1, 1};
144
145/* flexible array members */
146struct a15 {char a; int b[];} c15;
147int a16(void) {c15.a = 1;}
148
149/* compound literals */
150void f13()
151{
152  a13 x; x = (a13){1,2};
153}
154
155/* va_arg */
156int f14(int i, ...) {
157  __builtin_va_list l;
158  __builtin_va_start(l,i);
159  a13 b = __builtin_va_arg(l, a13);
160  return b.b;
161}
162
163/* Attribute packed */
164struct __attribute__((packed)) S2839 { double a[19];  signed char b; } s2839[5];
165
166struct __attribute__((packed)) SS { long double a; char b; } SS;
167
168
169/* As lvalue */
170
171int f15() {
172  extern range f15_ext();
173  return f15_ext().location;
174}
175
176range f16() {
177  extern rangepair f16_ext();
178  return f16_ext().range1;
179}
180
181int f17() {
182  extern range f17_ext();
183  range r;
184  return (r = f17_ext()).location;
185}
186
187range f18() {
188  extern rangepair f18_ext();
189  rangepair rp;
190  return (rp = f18_ext()).range1;
191}
192