blob: 847b6d423e40f032449e8ccbb91fe4deb09fb8e5 (
plain)
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
|
/* { dg-do compile } */
/* { dg-options "-fdiagnostics-path-format=inline-events -fdiagnostics-show-caret -fdiagnostics-show-line-numbers" } */
/* { dg-enable-nn-line-numbers "" } */
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
extern void body_of_program(void);
void custom_logger(const char *msg)
{
fprintf(stderr, "LOG: %s", msg); /* { dg-warning "call to 'fprintf' from within signal handler" } */
}
static void int_handler(int signum)
{
custom_logger("got signal");
}
static void register_handler ()
{
signal(SIGINT, int_handler);
}
void test (void)
{
register_handler ();
body_of_program();
}
/* { dg-begin-multiline-output "" }
NN | fprintf(stderr, "LOG: %s", msg);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
'test': events 1-2
|
| NN | {
| | ^
| | |
| | (1) entering 'test'
| NN | register_handler ();
| | ~~~~~~~~~~~~~~~~~~~
| | |
| | (2) calling 'register_handler'
|
+--> 'register_handler': events 3-4
|
| NN | {
| | ^
| | |
| | (3) entering 'register_handler'
| NN | signal(SIGINT, int_handler);
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~
| | |
| | (4) registering 'int_handler' as signal handler
|
event 5
|
|cc1:
| (5): later on, when the signal is delivered to the process
|
+--> 'int_handler': events 6-7
|
| NN | {
| | ^
| | |
| | (6) entering 'int_handler'
| NN | custom_logger("got signal");
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~
| | |
| | (7) calling 'custom_logger'
|
+--> 'custom_logger': events 8-9
|
| NN | {
| | ^
| | |
| | (8) entering 'custom_logger'
| NN | fprintf(stderr, "LOG: %s", msg);
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| | |
| | (9) calling 'fprintf'
|
{ dg-end-multiline-output "" } */
|
