1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* __builtin_va_arg_pack () builtin tests. */
#include <stdarg.h>
extern void abort (void);
int v1 = 8;
long int v2 = 3;
void *v3 = (void *) &v2;
struct A { char c[16]; } v4 = { "foo" };
long double v5 = 40;
char seen[20];
int cnt;
__attribute__ ((noinline)) int
foo1 (int x, int y, ...)
{
int i;
long int l;
void *v;
struct A a;
long double ld;
va_list ap;
va_start (ap, y);
if (x < 0 || x >= 20 || seen[x])
abort ();
seen[x] = ++cnt;
if (y != 6)
abort ();
i = va_arg (ap, int);
if (i != 5)
abort ();
switch (x)
{
case 0:
i = va_arg (ap, int);
if (i != 9 || v1 != 9)
abort ();
a = va_arg (ap, struct A);
if (__builtin_memcmp (a.c, v4.c, sizeof (a.c)) != 0)
abort ();
v = (void *) va_arg (ap, struct A *);
if (v != (void *) &v4)
abort ();
l = va_arg (ap, long int);
if (l != 3 || v2 != 4)
abort ();
break;
case 1:
ld = va_arg (ap, long double);
if (ld != 41 || v5 != ld)
abort ();
i = va_arg (ap, int);
if (i != 8)
abort ();
v = va_arg (ap, void *);
if (v != &v2)
abort ();
break;
case 2:
break;
default:
abort ();
}
va_end (ap);
return x;
}
__attribute__ ((noinline)) int
foo2 (int x, int y, ...)
{
long long int ll;
void *v;
struct A a, b;
long double ld;
va_list ap;
va_start (ap, y);
if (x < 0 || x >= 20 || seen[x])
abort ();
seen[x] = ++cnt | 64;
if (y != 10)
abort ();
switch (x)
{
case 11:
break;
case 12:
ld = va_arg (ap, long double);
if (ld != 41 || v5 != 40)
abort ();
a = va_arg (ap, struct A);
if (__builtin_memcmp (a.c, v4.c, sizeof (a.c)) != 0)
abort ();
b = va_arg (ap, struct A);
if (__builtin_memcmp (b.c, v4.c, sizeof (b.c)) != 0)
abort ();
v = va_arg (ap, void *);
if (v != &v2)
abort ();
ll = va_arg (ap, long long int);
if (ll != 16LL)
abort ();
break;
case 2:
break;
default:
abort ();
}
va_end (ap);
return x + 8;
}
__attribute__ ((noinline)) int
foo3 (void)
{
return 6;
}
extern inline __attribute__ ((always_inline, gnu_inline)) int
bar (int x, ...)
{
if (x < 10)
return foo1 (x, foo3 (), 5, __builtin_va_arg_pack ());
return foo2 (x, foo3 () + 4, __builtin_va_arg_pack ());
}
int
main (void)
{
if (bar (0, ++v1, v4, &v4, v2++) != 0)
abort ();
if (bar (1, ++v5, 8, v3) != 1)
abort ();
if (bar (2) != 2)
abort ();
if (bar (v1 + 2) != 19)
abort ();
if (bar (v1 + 3, v5--, v4, v4, v3, 16LL) != 20)
abort ();
return 0;
}
|
