1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 1992-2020 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
17
18#include <stdio.h>
19#include <stdlib.h>
20
21extern int marker1 (void);
22extern int marker2 (int a);
23extern void marker3 (char *a, char *b);
24extern void marker4 (long d);
25
26/* We're used by a test that requires malloc, so make sure it is in
27   the executable.  */
28void *need_malloc ()
29{
30  return malloc (1);
31}
32
33/*
34 *	This simple classical example of recursion is useful for
35 *	testing stack backtraces and such.
36 */
37
38int factorial(int);
39
40int
41main (int argc, char **argv, char **envp)
42{
43    if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
44	fprintf (stderr, "usage:  factorial <number>\n");
45	return 1;
46    }
47    printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
48    /* set breakpoint 12 here */
49    marker1 ();  /* set breakpoint 11 here */
50    marker2 (43); /* set breakpoint 20 here */
51    marker3 ("stack", "trace"); /* set breakpoint 21 here */
52    marker4 (177601976L);
53    /* We're used by a test that requires malloc, so make sure it is
54       in the executable.  */
55    (void)malloc (1);
56
57    argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
58    return argc;  /* set breakpoint 10 here */
59} /* set breakpoint 10a here */
60
61int factorial (int value)
62{
63  if (value > 1) {  /* set breakpoint 7 here */
64	value *= factorial (value - 1);
65    }
66    return (value); /* set breakpoint 19 here */
67}
68
69int multi_line_if_conditional (int a, int b, int c)
70{
71  if (a    /* set breakpoint 3 here */
72      && b
73      && c)
74    return 0;
75  else
76    return 1;
77}
78
79int multi_line_while_conditional (int a, int b, int c)
80{
81  while (a /* set breakpoint 4 here */
82      && b
83      && c)
84    {
85      a--, b--, c--;
86    }
87  return 0;
88}
89