break.c revision 1.1 
1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 1992-2014 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#ifdef vxworks
19
20#  include <stdio.h>
21
22/* VxWorks does not supply atoi.  */
23static int
24atoi (z)
25     char *z;
26{
27  int i = 0;
28
29  while (*z >= '0' && *z <= '9')
30    i = i * 10 + (*z++ - '0');
31  return i;
32}
33
34/* I don't know of any way to pass an array to VxWorks.  This function
35   can be called directly from gdb.  */
36
37vxmain (arg)
38char *arg;
39{
40  char *argv[2];
41
42  argv[0] = "";
43  argv[1] = arg;
44  main (2, argv, (char **) 0);
45}
46
47#else /* ! vxworks */
48#  include <stdio.h>
49#  include <stdlib.h>
50#endif /* ! vxworks */
51
52#ifdef PROTOTYPES
53extern int marker1 (void);
54extern int marker2 (int a);
55extern void marker3 (char *a, char *b);
56extern void marker4 (long d);
57#else
58extern int marker1 ();
59extern int marker2 ();
60extern void marker3 ();
61extern void marker4 ();
62#endif
63
64/* We're used by a test that requires malloc, so make sure it is in
65   the executable.  */
66void *need_malloc ()
67{
68  return malloc (1);
69}
70
71/*
72 *	This simple classical example of recursion is useful for
73 *	testing stack backtraces and such.
74 */
75
76#ifdef PROTOTYPES
77int factorial(int);
78
79int
80main (int argc, char **argv, char **envp)
81#else
82int
83main (argc, argv, envp)
84int argc;
85char *argv[], **envp;
86#endif
87{
88    if (argc == 12345) {  /* an unlikely value < 2^16, in case uninited */ /* set breakpoint 6 here */
89	fprintf (stderr, "usage:  factorial <number>\n");
90	return 1;
91    }
92    printf ("%d\n", factorial (atoi ("6")));  /* set breakpoint 1 here */
93    /* set breakpoint 12 here */
94    marker1 ();  /* set breakpoint 11 here */
95    marker2 (43); /* set breakpoint 20 here */
96    marker3 ("stack", "trace"); /* set breakpoint 21 here */
97    marker4 (177601976L);
98    /* We're used by a test that requires malloc, so make sure it is
99       in the executable.  */
100    (void)malloc (1);
101
102    argc = (argc == 12345); /* This is silly, but we can step off of it */ /* set breakpoint 2 here */
103    return argc;  /* set breakpoint 10 here */
104} /* set breakpoint 10a here */
105
106#ifdef PROTOTYPES
107int factorial (int value)
108#else
109int factorial (value)
110int value;
111#endif
112{
113  if (value > 1) {  /* set breakpoint 7 here */
114	value *= factorial (value - 1);
115    }
116    return (value); /* set breakpoint 19 here */
117}
118
119#ifdef PROTOTYPES
120int multi_line_if_conditional (int a, int b, int c)
121#else
122int multi_line_if_conditional (a, b, c)
123  int a, b, c;
124#endif
125{
126  if (a    /* set breakpoint 3 here */
127      && b
128      && c)
129    return 0;
130  else
131    return 1;
132}
133
134#ifdef PROTOTYPES
135int multi_line_while_conditional (int a, int b, int c)
136#else
137int multi_line_while_conditional (a, b, c)
138  int a, b, c;
139#endif
140{
141  while (a /* set breakpoint 4 here */
142      && b
143      && c)
144    {
145      a--, b--, c--;
146    }
147  return 0;
148}
149