blob: 7d36c753ffb94d39e99e59a68b128a7db70ba937 (
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
|
/* Copyright 2018-2025 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>
int
frame_2 (void)
{
return 0;
}
int
frame_1 (void)
{
return frame_2 ();
}
int
recursive (int arg)
{
int v;
if (arg < 2)
v = recursive (arg + 1);
else
v = frame_2 ();
return v;
}
/* A function that never returns. */
void __attribute__((noreturn))
func_that_never_returns (void)
{
exit (0);
}
/* A function that tail calls. Calling a 'noreturn' function isn't
required for a tail call, but at low optimisation levels, gcc will apply
the tail call optimisation only for 'noreturn' calls. */
void
func_that_tail_calls (void)
{
func_that_never_returns ();
}
int
main (void)
{
int i, j;
i = frame_1 ();
j = recursive (0);
func_that_tail_calls ();
return i + j;
}
|
