1 // RUN: %clang_cc1 %s -Wno-pointer-to-int-cast -verify -fsyntax-only -ffreestanding
2
3 #include <stddef.h>
4 #include <stdint.h>
5
6 typedef void (* fp)(void);
7 void foo(void);
8
9 // PR clang/3377
10 fp a[(short int)1] = { foo };
11
12 int myArray[5] = {1, 2, 3, 4, 5};
13 int *myPointer2 = myArray;
14 int *myPointer = &(myArray[2]);
15
16
17 extern int x;
18 void *g = &x;
19 int *h = &x;
20
21 struct union_crash
22 {
23 union
24 {
25 };
26 };
27
test()28 int test() {
29 int a[10];
30 int b[10] = a; // expected-error {{array initializer must be an initializer list}}
31 int +; // expected-error {{expected identifier or '('}}
32
33 struct union_crash u = { .d = 1 }; // expected-error {{field designator 'd' does not refer to any field in type 'struct union_crash'}}
34 }
35
36
37 // PR2050
38 struct cdiff_cmd {
39 const char *name;
40 unsigned short argc;
41 int (*handler)();
42 };
43 int cdiff_cmd_open();
44 struct cdiff_cmd commands[] = {
45 {"OPEN", 1, &cdiff_cmd_open }
46 };
47
48 // PR2348
49 static struct { int z; } s[2];
50 int *t = &(*s).z;
51
52 // PR2349
a2(void)53 short *a2(void)
54 {
55 short int b;
56 static short *bp = &b; // expected-error {{initializer element is not a compile-time constant}}
57
58 return bp;
59 }
60
pbool(void)61 int pbool(void) {
62 typedef const _Bool cbool;
63 _Bool pbool1 = (void *) 0;
64 cbool pbool2 = &pbool;
65 return pbool2;
66 }
67
68
69 // rdar://5870981
70 union { float f; unsigned u; } u = { 1.0f };
71
72 // rdar://6156694
f3(int x)73 int f3(int x) { return x; }
74 typedef void (*vfunc)(void);
75 void *bar = (vfunc) f3;
76
77 // PR2747
78 struct sym_reg {
79 char nc_gpreg;
80 };
81 int sym_fw1a_scr[] = {
82 ((int)(&((struct sym_reg *)0)->nc_gpreg)) & 0,
83 8 * ((int)(&((struct sym_reg *)0)->nc_gpreg))
84 };
85
86 // PR3001
87 struct s1 s2 = { // expected-error {{variable has incomplete type 'struct s1'}} \
88 // expected-note {{forward declaration of 'struct s1'}}
89 .a = sizeof(struct s3), // expected-error {{invalid application of 'sizeof'}} \
90 // expected-note{{forward declaration of 'struct s3'}}
91 .b = bogus // expected-error {{use of undeclared identifier 'bogus'}}
92 }
93
94 // PR3382
95 char t[] = ("Hello");
96
97 // <rdar://problem/6094855>
98 typedef struct { } empty;
99
100 typedef struct {
101 empty e;
102 int i2;
103 } st;
104
105 st st1 = { .i2 = 1 };
106
107 // <rdar://problem/6096826>
108 struct {
109 int a;
110 int z[2];
111 } y = { .z = {} };
112
113 int bbb[10];
114
115 struct foo2 {
116 uintptr_t a;
117 };
118
119 struct foo2 bar2[] = {
120 { (intptr_t)bbb }
121 };
122
123 struct foo2 bar3 = { 1, 2 }; // expected-warning{{excess elements in struct initializer}}
124 #pragma clang diagnostic push
125 #pragma clang diagnostic ignored "-Wexcess-initializers"
126 struct foo2 bar3_silent = {1, 2};
127 #pragma clang diagnostic pop
128
129 int* ptest1 = __builtin_choose_expr(1, (int*)0, (int*)0);
130
131 typedef int32_t ivector4 __attribute((vector_size(16)));
132 ivector4 vtest1 = 1 ? (ivector4){1} : (ivector4){1};
133 ivector4 vtest2 = __builtin_choose_expr(1, (ivector4){1}, (ivector4){1});
134
135 uintptr_t ptrasintadd1 = (uintptr_t)&a - 4;
136 uintptr_t ptrasintadd2 = (uintptr_t)&a + 4;
137 uintptr_t ptrasintadd3 = 4 + (uintptr_t)&a;
138
139 // PR4285
140 const wchar_t widestr[] = L"asdf";
141
142 // PR5447
143 const double pr5447 = (0.05 < -1.0) ? -1.0 : 0.0499878;
144
145 // PR4386
146
147 // None of these are constant initializers, but we implement GCC's old
148 // behaviour of accepting bar and zed but not foo. GCC's behaviour was
149 // changed in 2007 (rev 122551), so we should be able to change too one
150 // day.
151 int PR4386_bar();
152 int PR4386_foo() __attribute((weak));
153 int PR4386_zed();
154
155 int PR4386_a = ((void *) PR4386_bar) != 0;
156 int PR4386_b = ((void *) PR4386_foo) != 0; // expected-error{{initializer element is not a compile-time constant}}
157 int PR4386_c = ((void *) PR4386_zed) != 0;
158 int PR4386_zed() __attribute((weak));
159
160 // <rdar://problem/10185490> (derived from SPEC vortex benchmark)
161 typedef char strty[10];
162 struct vortexstruct { strty s; };
163 struct vortexstruct vortexvar = { "asdf" };
164
165 typedef struct { uintptr_t x : 2; } StructWithBitfield;
166 StructWithBitfield bitfieldvar = { (uintptr_t)&bitfieldvar }; // expected-error {{initializer element is not a compile-time constant}}
167