struct.c source code [clang_source_code/test/CodeGen/struct.c]

1	// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o -
2
3	struct {
4	int x;
5	int y;
6	} point;
7
8	void fn1() {
9	point.x = 42;
10	}
11
12	/* Nested member */
13	struct {
14	struct {
15	int a;
16	int b;
17	} p1;
18	} point2;
19
20	void fn2() {
21	point2.p1.a = 42;
22	}
23
24	/* Indirect reference */
25	typedef struct __sf {
26	unsigned char *c;
27	short flags;
28	} F;
29
30	typedef struct __sf2 {
31	F *ff;
32	} F2;
33
34	int fn3(F2 *c) {
35	if (c->ff->c >= 0)
36	return 1;
37	else
38	return 0;
39	}
40
41	/* Nested structs */
42	typedef struct NA {
43	int data;
44	struct NA *next;
45	} NA;
46	void f1() { NA a; }
47
48	typedef struct NB {
49	int d1;
50	struct _B2 {
51	int d2;
52	struct NB *n2;
53	} B2;
54	} NB;
55
56	void f2() { NB b; }
57
58	extern NB *f3();
59	void f4() {
60	f3()->d1 = 42;
61	}
62
63	void f5() {
64	(f3())->d1 = 42;
65	}
66
67	/* Function calls */
68	typedef struct {
69	int location;
70	int length;
71	} range;
72	extern range f6();
73	void f7() {
74	range r = f6();
75	}
76
77	/* Member expressions */
78	typedef struct {
79	range range1;
80	range range2;
81	} rangepair;
82
83	void f8() {
84	rangepair p;
85
86	range r = p.range1;
87	}
88
89	void f9(range *p) {
90	range r = *p;
91	}
92
93	void f10(range *p) {
94	range r = p[0];
95	}
96
97	/* _Bool types */
98
99	struct _w {
100	short a,b;
101	short c,d;
102	short e,f;
103	short g;
104
105	unsigned int h,i;
106
107	_Bool j,k;
108	} ws;
109
110	/* Implicit casts (due to typedefs) */
111	typedef struct _a {
112	int a;
113	} a;
114
115	void f11() {
116	struct _a a1;
117	a a2;
118
119	a1 = a2;
120	a2 = a1;
121	}
122
123	/* Implicit casts (due to const) */
124	void f12() {
125	struct _a a1;
126	const struct _a a2;
127
128	a1 = a2;
129	}
130
131	/* struct initialization */
132	struct a13 {int b; int c;};
133	struct a13 c13 = {5};
134	typedef struct a13 a13;
135	struct a14 { short a; int b; } x = {1, 1};
136
137	/* flexible array members */
138	struct a15 {char a; int b[];} c15;
139	int a16(void) {c15.a = 1;}
140
141	/* compound literals */
142	void f13() {
143	a13 x; x = (a13){1,2};
144	}
145
146	/* va_arg */
147	int f14(int i, ...) {
148	__builtin_va_list l;
149	__builtin_va_start(l,i);
150	a13 b = __builtin_va_arg(l, a13);
151	int c = __builtin_va_arg(l, a13).c;
152	return b.b;
153	}
154
155	/* Attribute packed */
156	struct __attribute__((packed)) S2839 { double a[19]; signed char b; } s2839[5];
157
158	struct __attribute__((packed)) SS { long double a; char b; } SS;
159
160
161	/* As lvalue */
162
163	int f15() {
164	extern range f15_ext();
165	return f15_ext().location;
166	}
167
168	range f16() {
169	extern rangepair f16_ext();
170	return f16_ext().range1;
171	}
172
173	int f17() {
174	extern range f17_ext();
175	range r;
176	return (r = f17_ext()).location;
177	}
178
179	range f18() {
180	extern rangepair f18_ext();
181	rangepair rp;
182	return (rp = f18_ext()).range1;
183	}
184
185
186
187	// Complex forward reference of struct.
188	struct f19S;
189	extern struct f19T {
190	struct f19S (*p)(void);
191	} t;
192	struct f19S { int i; };
193	void f19(void) {
194	t.p();
195	}
196
197

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