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
|
#include "test.h"
// Attributes defined BEFORE declarations
__attribute__((constructor(200))) void ctor2();
__attribute__((constructor(100))) void ctor1();
__attribute__((destructor(200))) void dtor2();
__attribute__((destructor(100))) void dtor1();
int step = 0;
void before_main_low () __attribute__((constructor(500))) ;
void before_main_high() __attribute__((constructor(400))) ;
void after_main_low() __attribute__((destructor(500))) ;
void after_main_high() __attribute__((destructor(400))) ;
// Attributes defined AFTER declarations
void ctor3() __attribute__((constructor(300)));
void dtor3() __attribute__((destructor(300)));
void ctor1() {
printf("Constructor 100 (first)\n");
step += 100;
ASSERT(100, step);
}
void ctor2() {
printf("Constructor 200 (second)\n");
step += 100;
ASSERT(200, step);
}
void ctor3() {
printf("Constructor 300 (third)\n");
step += 100;
ASSERT(300, step);
}
void dtor1() {
printf("Destructor 100 (first)\n");
step -= 100;
ASSERT(0, step);
}
void dtor2() {
printf("Destructor 200 (second)\n");
step -= 100;
ASSERT(100, step);
}
void dtor3() {
printf("Destructor 300 (last)\n");
step -= 100;
ASSERT(200, step);
}
void before_main_low(void) {
printf("Constructor with priority 500 (runs fifth)\n");
step += 100;
ASSERT(500, step);
}
void before_main_high(void) {
printf("Constructor with priority 400 (runs fourth)\n");
step += 100;
ASSERT(400, step);
}
void after_main_low(void) {
printf("Destructor with priority 500 (runs fifth)\n");
step -= 100;
ASSERT(400, step);
}
void after_main_high(void) {
printf("Destructor with priority 400 (runs fourth)\n");
step -= 100;
ASSERT(300, step);
}
int main(void) {
printf("Inside main()\n");
return 0;
}
|
